{"title":"Probes","description":"","products":[{"product_id":"centalic-pe75a72gg-test-probe-cupped-tip","title":"Centalic PE75-A-7.2GG Test Probe, Cupped Tip, 75mil","description":"\u003cp\u003eThe Centalic PE75-A-7.2GG is a spring-loaded in-circuit test probe for fixtures on 1.91 mm (75 mil) centres, running in an RE75 receptacle pressed into the probe plate.\u003c\/p\u003e\n\u003cp\u003eIt combines the A cupped (concave) head — which captures a round target and holds it centred, for component leads, wire ends and solder bumps rather than flat pads — with the middle PE75 spring at 7.2 oz (200 gf). That is well above anything the standard PQ75 range offers, so this is the part to specify when a cup has to seat firmly on an oxidised or slightly misaligned lead in a 75 mil (1.91 mm) field.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCupped (concave) tip; plunger diameter 0.64 mm, barrel diameter 1.02 mm\u003c\/li\u003e\n\u003cli\u003eRecommended minimum centre spacing 1.91 mm (75 mil); mounting hole Ø1.35 mm\u003c\/li\u003e\n\u003cli\u003eRated stroke 4.30 mm, full stroke 6.40 mm\u003c\/li\u003e\n\u003cli\u003eSpring force 200 gf (7.2 oz)\u003c\/li\u003e\n\u003cli\u003eCurrent rating 3 A continuous; contact resistance 40 mΩ\u003c\/li\u003e\n\u003cli\u003eReceptacle brass and barrel bronze, both gold plated; plunger BeCu; spring music wire, gold plated\u003c\/li\u003e\n\u003cli\u003eUsed with RE75 series receptacles\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Centalic","offers":[{"title":"Default Title","offer_id":42917833965670,"sku":"201-0106-00","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/image_1920_38ca0648-1fb5-4383-8163-82b27724852e.png?v=1751749622"},{"product_id":"centalic-pq100a72gg-test-probe-cupped-tip","title":"Centalic PQ100-A-7.2GG Test Probe, Cupped Tip, 100mil","description":"\u003cp\u003eThe Centalic PQ100-A-7.2GG is a spring-loaded in-circuit test probe for fixtures on 2.54 mm (100 mil) centres, running in an RQ100 receptacle pressed into the probe plate.\u003c\/p\u003e\n\u003cp\u003eThe A head is a cupped (concave) tip 1.57 mm across, which captures a round target and holds it centred — the head for component leads, wire ends, solder bumps and filled vias rather than flat pads. It is paired here with a 7.2 oz (203 gf) spring, nearly twice the force of the 4 oz variants: useful when a cup has to seat firmly on a lead that may be oxidised or slightly out of position.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCupped (concave) tip, Ø1.57 mm; plunger diameter 0.91 mm, barrel diameter 1.36 mm\u003c\/li\u003e\n\u003cli\u003eRecommended minimum centre spacing 2.54 mm (100 mil); mounting hole Ø1.75 mm\u003c\/li\u003e\n\u003cli\u003eRated stroke 4.30 mm, full stroke 6.35 mm\u003c\/li\u003e\n\u003cli\u003eSpring force 203 gf (7.2 oz)\u003c\/li\u003e\n\u003cli\u003eCurrent rating 3 A continuous; contact resistance 30 mΩ\u003c\/li\u003e\n\u003cli\u003eBarrel and receptacle brass, gold plated; plunger BeCu; spring music wire, gold plated\u003c\/li\u003e\n\u003cli\u003eUsed with RQ100 series receptacles\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Centalic","offers":[{"title":"Default Title","offer_id":42917833998438,"sku":"201-0091-02","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/image_1920_f593b8f4-6a3a-4887-8098-de7b283d333c.png?v=1751749625"},{"product_id":"centalic-pq100b4gg-test-probe-needle-tip","title":"Centalic PQ100-B-4GG Test Probe, Needle Tip, 100mil","description":"\u003cp\u003eThe Centalic PQ100-B-4GG is a spring-loaded in-circuit test probe for fixtures laid out on 2.54 mm (100 mil) centres. It runs in an RQ100 receptacle pressed into the probe plate, so worn probes are replaced by hand without disturbing the fixture wiring.\u003c\/p\u003e\n\u003cp\u003eThe 100 mil (2.54 mm) size is the most robust of the common ICT pitches — a 1.36 mm barrel and a 0.91 mm plunger give it long life and a low 30 mΩ contact resistance, the lowest of the PQ range. The B head is a needle (spear) point, concentrating all the load on a single point so it cuts through no-clean residue. At 4 oz (120 gf) this is one of the lighter springs in a range that runs from 3.5 oz to 11 oz.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNeedle (spear) tip; plunger diameter 0.91 mm, barrel diameter 1.36 mm\u003c\/li\u003e\n\u003cli\u003eRecommended minimum centre spacing 2.54 mm (100 mil); mounting hole Ø1.75 mm\u003c\/li\u003e\n\u003cli\u003eRated stroke 4.30 mm, full stroke 6.35 mm\u003c\/li\u003e\n\u003cli\u003eSpring force 120 gf (4 oz)\u003c\/li\u003e\n\u003cli\u003eCurrent rating 3 A continuous; contact resistance 30 mΩ\u003c\/li\u003e\n\u003cli\u003eBarrel and receptacle brass, gold plated; plunger BeCu; spring music wire, gold plated\u003c\/li\u003e\n\u003cli\u003eUsed with RQ100 series receptacles\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Centalic","offers":[{"title":"Default Title","offer_id":42917834031206,"sku":"201-0091-00","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/image_1920_db59b35c-0847-4653-a689-db3267b68f6e.png?v=1751749627"},{"product_id":"centalic-pq50a4gg-test-probe-cupped-tip","title":"Centalic PQ50-A-4GG Test Probe, Cupped Tip, 50mil","description":"\u003cp\u003eThe Centalic PQ50-A-4GG is a spring-loaded in-circuit test probe for fixtures on 1.27 mm (50 mil) centres, running in an RQ50 receptacle pressed into the probe plate.\u003c\/p\u003e\n\u003cp\u003eThe A head is a cupped (concave) tip 0.90 mm across. The cup captures a round target and holds it centred, which makes this the probe to use against solder bumps, wire ends, component leads and via fill — anywhere a flat or pointed tip would slide off. On flat pads a needle or serrated head will give a more repeatable contact. The 4 oz (122 gf) spring is the mid force of the PQ50 range.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCupped (concave) tip, Ø0.90 mm; plunger diameter 0.50 mm, barrel diameter 0.78 mm\u003c\/li\u003e\n\u003cli\u003eRecommended minimum centre spacing 1.27 mm (50 mil); mounting hole Ø1.0 mm\u003c\/li\u003e\n\u003cli\u003eRated stroke 4.30 mm, full stroke 6.35 mm\u003c\/li\u003e\n\u003cli\u003eSpring force 122 gf (4 oz)\u003c\/li\u003e\n\u003cli\u003eCurrent rating 3 A continuous; contact resistance 60 mΩ\u003c\/li\u003e\n\u003cli\u003eBarrel and receptacle bronze, gold plated; plunger BeCu; spring music wire, gold plated\u003c\/li\u003e\n\u003cli\u003eUsed with RQ50 series receptacles\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Centalic","offers":[{"title":"Default Title","offer_id":42917834063974,"sku":"201-0089-02","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/image_1920_30886a5c-2472-4cf3-b9d0-3de14243fb33.png?v=1751749630"},{"product_id":"centalic-pq50b4gg-test-probe-needle-tip","title":"Centalic PQ50-B-4GG Test Probe, Needle Tip, 50mil","description":"\u003cp\u003eThe Centalic PQ50-B-4GG is a spring-loaded in-circuit test probe for fixtures laid out on 1.27 mm (50 mil) centres. The probe drops into an RQ50 receptacle pressed into the probe plate, so worn probes are replaced by hand without disturbing the wiring — the standard two-piece arrangement for bed-of-nails fixtures.\u003c\/p\u003e\n\u003cp\u003eThe B head is a needle (spear) point on a 0.50 mm plunger: the tip to reach small pads, vias and tight targets, and the one that penetrates no-clean flux residue most readily because all the spring load is concentrated on a single point. The 4 oz (122 gf) spring is the mid force of the PQ50 range, which also offers 3 oz and 5.5 oz.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNeedle (spear) tip; plunger diameter 0.50 mm, barrel diameter 0.78 mm\u003c\/li\u003e\n\u003cli\u003eRecommended minimum centre spacing 1.27 mm (50 mil); mounting hole Ø1.0 mm\u003c\/li\u003e\n\u003cli\u003eRated stroke 4.30 mm, full stroke 6.35 mm\u003c\/li\u003e\n\u003cli\u003eSpring force 122 gf (4 oz)\u003c\/li\u003e\n\u003cli\u003eCurrent rating 3 A continuous; contact resistance 60 mΩ\u003c\/li\u003e\n\u003cli\u003eBarrel and receptacle bronze, gold plated; plunger BeCu; spring music wire, gold plated\u003c\/li\u003e\n\u003cli\u003eUsed with RQ50 series receptacles\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Centalic","offers":[{"title":"Default Title","offer_id":42917834096742,"sku":"201-0089-00","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/image_1920_dd6021ed-6638-4cf7-bd80-cc64a576e9aa.png?v=1751749632"},{"product_id":"centalic-pq50h555gg-test-probe-waffle-tip","title":"Centalic PQ50-H5-5.5GG Test Probe, Crown Tip, 50mil","description":"\u003cp\u003eThe Centalic PQ50-H5-5.5GG is a spring-loaded in-circuit test probe for fixtures on 1.27 mm (50 mil) centres, running in an RQ50 receptacle pressed into the probe plate.\u003c\/p\u003e\n\u003cp\u003eThe H5 head is a waffle tip: a flat face cross-hatched into a grid of small pyramids. The many small points bite through oxide and flux residue at several places at once, giving a more forgiving contact than a single needle on dirty or reflowed surfaces, while still spreading load across the pad. It is paired here with the heaviest PQ50 spring, 5.5 oz (150 gf) — reach for this combination when 4 oz needle probes are giving intermittent opens on a contaminated board.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWaffle tip; plunger diameter 0.50 mm, barrel diameter 0.78 mm\u003c\/li\u003e\n\u003cli\u003eRecommended minimum centre spacing 1.27 mm (50 mil); mounting hole Ø1.0 mm\u003c\/li\u003e\n\u003cli\u003eRated stroke 4.30 mm, full stroke 6.35 mm\u003c\/li\u003e\n\u003cli\u003eSpring force 150 gf (5.5 oz)\u003c\/li\u003e\n\u003cli\u003eCurrent rating 3 A continuous; contact resistance 60 mΩ\u003c\/li\u003e\n\u003cli\u003eBarrel and receptacle bronze, gold plated; plunger BeCu; spring music wire, gold plated\u003c\/li\u003e\n\u003cli\u003eUsed with RQ50 series receptacles\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Centalic","offers":[{"title":"Default Title","offer_id":42917834948710,"sku":"201-0100-00","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/image_1920_90f3feab-0835-4925-9bed-151569e557a2.png?v=1751749635"},{"product_id":"centalic-pq75a4gg-test-probe-cupped-tip","title":"Centalic PQ75-A-4GG Spring Test Probe, Cupped Tip, 75mil","description":"\u003cp\u003eThe Centalic PQ75-A-4GG is a spring-loaded in-circuit test probe for fixtures on 1.91 mm (75 mil) centres, running in an RQ75 receptacle pressed into the probe plate.\u003c\/p\u003e\n\u003cp\u003eThe A head is a cupped (concave) tip 1.27 mm across. The cup captures a round target and holds it centred, so it is the head to use against component leads, wire ends, solder bumps and filled vias — anywhere a flat or pointed tip would slide off to one side. On plain flat pads a needle or serrated head gives a more repeatable contact. Spring force is 4 oz (112 gf), the lightest of the three PQ75 options.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCupped (concave) tip, Ø1.27 mm; plunger diameter 0.64 mm, barrel diameter 1.02 mm\u003c\/li\u003e\n\u003cli\u003eRecommended minimum centre spacing 1.91 mm (75 mil); mounting hole Ø1.35 mm\u003c\/li\u003e\n\u003cli\u003eRated stroke 4.30 mm, full stroke 6.35 mm\u003c\/li\u003e\n\u003cli\u003eSpring force 112 gf (4 oz)\u003c\/li\u003e\n\u003cli\u003eCurrent rating 3 A continuous; contact resistance 40 mΩ\u003c\/li\u003e\n\u003cli\u003eReceptacle brass and barrel bronze, both gold plated; plunger BeCu; spring music wire, gold plated\u003c\/li\u003e\n\u003cli\u003eUsed with RQ75 series receptacles\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Centalic","offers":[{"title":"Default Title","offer_id":42917835145318,"sku":"201-0090-02","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/image_1920_512a5965-4c2d-4352-8ca8-dc52e2f15c09.png?v=1751749637"},{"product_id":"centalic-pq75b4gg-test-probe-needle-tip","title":"Centalic PQ75-B-4GG Test Probe, Needle Tip, 75mil","description":"\u003cp\u003eThe Centalic PQ75-B-4GG is a spring-loaded in-circuit test probe for fixtures laid out on 1.91 mm (75 mil) centres. It runs in an RQ75 receptacle pressed into the probe plate, so a worn probe is pulled and replaced by hand without touching the wiring.\u003c\/p\u003e\n\u003cp\u003eThe 75 mil (1.91 mm) size is the usual compromise in a bed-of-nails fixture: a sturdier barrel and higher contact reliability than 50 mil (1.27 mm) probes, in a pitch most test-point maps can accommodate. The B head is a needle (spear) point on a 0.64 mm plunger, concentrating all the spring load on one point so it penetrates no-clean residue on small pads and vias. At 4 oz (112 gf) the spring is the lightest of the three PQ75 options.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNeedle (spear) tip; plunger diameter 0.64 mm, barrel diameter 1.02 mm\u003c\/li\u003e\n\u003cli\u003eRecommended minimum centre spacing 1.91 mm (75 mil); mounting hole Ø1.35 mm\u003c\/li\u003e\n\u003cli\u003eRated stroke 4.30 mm, full stroke 6.35 mm\u003c\/li\u003e\n\u003cli\u003eSpring force 112 gf (4 oz)\u003c\/li\u003e\n\u003cli\u003eCurrent rating 3 A continuous; contact resistance 40 mΩ\u003c\/li\u003e\n\u003cli\u003eReceptacle brass and barrel bronze, both gold plated; plunger BeCu; spring music wire, gold plated\u003c\/li\u003e\n\u003cli\u003eUsed with RQ75 series receptacles\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Centalic","offers":[{"title":"Default Title","offer_id":42917835178086,"sku":"201-0090-00","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/image_1920_dc4e8e16-2e6e-4821-a369-83bff3605346.png?v=1751749641"},{"product_id":"ingun-gks-100-214-130-a-2000-probe","title":"Ingun GKS-100 214 130 A 2000 Probe, Crown Tip, 100mil","description":"\u003cp\u003eThe INGUN GKS-100 214 130 A 2000 (INGUN item GKS-100-0008) is a standard-stroke spring-loaded test probe on the 2.54 mm (100 mil) grid — the default workhorse size for in-circuit and functional test fixtures. It plugs into a KS-100 receptacle, so worn probes can be pulled and replaced with the quick-exchange system without disturbing the probe plate or the wiring.\u003c\/p\u003e\n\u003cp\u003eThe 14 tip is a self-cleaning 4-point crown: the points bite through flux residue and oxide on solder joints, and the open centre lets debris escape rather than packing into the tip. At ø1.3 mm it is the general-purpose head size for 100 mil (2.54 mm) work, large enough to be forgiving of fixture tolerance on pads, posts and pins. The 2000 spring (2 N at working stroke) is INGUN's standard force for this family — step down to the 1500 or 1000 variants when total probe-field load or board flex is the constraint.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e14 4-point crown, self-cleaning tip, ø1.3 mm (.051 in), steel, gold-plated\u003c\/li\u003e\n\u003cli\u003e2.54 mm (100 mil) grid, barrel diameter 1.37 mm (.053 in), collar height 00\u003c\/li\u003e\n\u003cli\u003eTotal length 33.4 mm (1.31 in)\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm (.169 in), maximum stroke 6.35 mm (.25 in)\u003c\/li\u003e\n\u003cli\u003eSpring force 2 N (7.19 ozf) at working stroke; pre-load 0.66 N\u003c\/li\u003e\n\u003cli\u003e5 A rated current, typical resistance 20 mΩ\u003c\/li\u003e\n\u003cli\u003eContacts pads, posts and pins; plug-in mounting in KS-100, quick-exchange\u003c\/li\u003e\n\u003cli\u003eOperating range −40 °C to +80 °C; RoHS-compliant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144969240678,"sku":"201-000007","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/153f10612b85c101f7046d52a2d356db.png?v=1788927313"},{"product_id":"gks-075-291-064-a-2000-probe","title":"GKS-075 291 064 A 2000 Probe, Needle Tip, 75mil","description":"\u003cp\u003eThe INGUN GKS-075 291 064 A 2000 (INGUN item GKS-075-0004) is a standard-stroke spring-loaded test probe on the 1.91 mm (75 mil) grid. It is the step down from the 100 mil (2.54 mm) GKS-100 family: the same 4.3 mm working stroke and quick-exchange handling, in a 1.02 mm barrel that lets you pack probes tighter when the target density no longer fits on 2.54 mm (100 mil) centres.\u003c\/p\u003e\n\u003cp\u003eThe 91 tip is a self-cleaning dagger — a single sharp point that concentrates the full 2 N spring force into a very small area, so it punches through conformal coating, oxide and flux on small pads and vias where a crown would simply skate. Use it when contact reliability on contaminated or coated targets matters more than leaving the pad unmarked; a dagger will witness the surface.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e91 dagger, self-cleaning tip, ø0.64 mm (.025 in), steel, gold-plated\u003c\/li\u003e\n\u003cli\u003e1.91 mm (75 mil) grid, barrel diameter 1.02 mm (.04 in), collar height 00\u003c\/li\u003e\n\u003cli\u003eTotal length 33.1 mm (1.3 in)\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm (.169 in), maximum stroke 6.35 mm (.25 in)\u003c\/li\u003e\n\u003cli\u003eSpring force 2 N (7.19 ozf) at working stroke; pre-load 0.72 N\u003c\/li\u003e\n\u003cli\u003e3 A rated current, typical resistance 20 mΩ\u003c\/li\u003e\n\u003cli\u003eContacts pads and vias; plug-in mounting in KS-075, quick-exchange\u003c\/li\u003e\n\u003cli\u003eOperating range −40 °C to +80 °C; RoHS-compliant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144969404518,"sku":"201-000008","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/828c90d439a463cf6fcbe8eaaf2671c0.png?v=1788927316"},{"product_id":"ingun-gks-075-297-064-a-2000-probe","title":"Ingun GKS-075 297 064 A 2000 Probe, Needle Tip, 75mil","description":"\u003cp\u003eThe INGUN GKS-075 297 064 A 2000 (INGUN item GKS-075-0085) is a standard-stroke spring-loaded test probe on the 1.91 mm (75 mil) grid, plugging into a KS-075 receptacle for quick exchange when a tip wears out.\u003c\/p\u003e\n\u003cp\u003eThe 97 tip is a self-cleaning 4-edged 90° dagger. Where the single-point 91 dagger concentrates everything on one apex, the four cutting edges of the 97 give it several independent bite points, which makes contact less dependent on how the probe happens to land and spreads wear across the tip. It is the choice for pads and vias that carry flux residue or light oxide and are probed at high cycle counts. Paired here with the 2000 spring (2 N), the strongest of the common GKS-075 forces, to keep contact resistance low on dirty targets.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e97 4-edged 90° dagger, self-cleaning tip, ø0.64 mm (.025 in), steel, gold-plated\u003c\/li\u003e\n\u003cli\u003e1.91 mm (75 mil) grid, barrel diameter 1.02 mm (.04 in), collar height 00\u003c\/li\u003e\n\u003cli\u003eTotal length 33.1 mm (1.3 in)\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm (.169 in), maximum stroke 6.35 mm (.25 in)\u003c\/li\u003e\n\u003cli\u003eSpring force 2 N (7.19 ozf) at working stroke; pre-load 0.72 N\u003c\/li\u003e\n\u003cli\u003e3 A rated current, typical resistance 20 mΩ\u003c\/li\u003e\n\u003cli\u003eContacts pads and vias; plug-in mounting in KS-075, quick-exchange\u003c\/li\u003e\n\u003cli\u003eOperating range −40 °C to +80 °C; RoHS-compliant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144969568358,"sku":"201-000009","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/3bfd458c08cf061223b7231a3d765064.png?v=1788927319"},{"product_id":"ingun-gks-040-305-040-a-0800-test-probe","title":"Ingun GKS-040 305 040 A 0800 Test Probe, Radius Tip, 40mil","description":"\u003cp\u003eThe INGUN GKS-040 305 040 A 0800 (INGUN item GKS-040-0002) is the finest-pitch probe in INGUN's standard-stroke GKS range: a 1 mm (39.3 mil) grid on a 0.61 mm barrel. Reach for it when the target pitch has closed to the point where even a 50 mil (1.27 mm) probe will not fit — fine-pitch BGA escape pads, connector arrays and dense probe-card style test points.\u003c\/p\u003e\n\u003cp\u003eEverything about it is scaled down to match: the 05 bullet-nosed tip is only ø0.4 mm, and the 0800 spring delivers 0.8 N at working stroke, which is deliberately light so a dense field of these probes does not flex a thin board. The full-radius bullet nose contacts pads and female connectors without cutting, at the cost of needing a clean target — on flux-contaminated surfaces a sharper tip style will be more reliable. Rated current is 2 A, so treat these as signal probes.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e05 bullet-nosed (full radius) tip, ø0.4 mm (.015 in), CuBe, gold-plated\u003c\/li\u003e\n\u003cli\u003e1 mm (39.3 mil) grid, barrel diameter 0.61 mm (.024 in), collar height 00\u003c\/li\u003e\n\u003cli\u003eTotal length 35.9 mm (1.41 in)\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm (.169 in), maximum stroke 6.35 mm (.25 in)\u003c\/li\u003e\n\u003cli\u003eSpring force 0.8 N (2.87 ozf) at working stroke; pre-load 0.15 N\u003c\/li\u003e\n\u003cli\u003e2 A rated current, typical resistance 20 mΩ\u003c\/li\u003e\n\u003cli\u003eContacts pads and female connectors; plug-in mounting in KS-040, quick-exchange\u003c\/li\u003e\n\u003cli\u003eOperating range −40 °C to +80 °C; RoHS-compliant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144970354790,"sku":"201-000014","price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/64449267a3435eb861bfb73c7e51c604.png?v=1788927331"},{"product_id":"ingun-gks-100-217-170-a-1500","title":"Ingun GKS-100 217 170 A 1500, Star Tip, 100mil","description":"\u003cp\u003eThe INGUN GKS-100 217 170 A 1500 (INGUN item GKS-100-0107) is a standard-stroke test probe on the 2.54 mm (100 mil) grid with the largest head in the common GKS-100 line-up — ø1.7 mm. It plugs into a KS-100 receptacle and supports quick exchange.\u003c\/p\u003e\n\u003cp\u003eThe 17 tip is a self-cleaning hexagonal pyramid with cutting edges: a ring of edges around a broad face, so it cuts through flux and oxide across a wide footprint rather than at a single point. That combination — wide head, many bite points — makes it the tip to choose for large solder pads, through-hole leads and ground planes where landing accuracy is loose and contact must stay reliable over many cycles. The 1500 spring (1.5 N) is the mid force for the family, a reasonable default when a full 2 N per probe would put too much total load on the board.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e17 hexagonal pyramid with cutting edges, self-cleaning, ø1.7 mm (.066 in), steel, gold-plated\u003c\/li\u003e\n\u003cli\u003e2.54 mm (100 mil) grid, barrel diameter 1.37 mm (.053 in), collar height 00\u003c\/li\u003e\n\u003cli\u003eTotal length 33.4 mm (1.31 in)\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm (.169 in), maximum stroke 6.35 mm (.25 in)\u003c\/li\u003e\n\u003cli\u003eSpring force 1.5 N (5.39 ozf) at working stroke; pre-load 0.49 N\u003c\/li\u003e\n\u003cli\u003e5 A rated current, typical resistance 20 mΩ\u003c\/li\u003e\n\u003cli\u003eContacts pads, vias and female connectors; plug-in mounting in KS-100, quick-exchange\u003c\/li\u003e\n\u003cli\u003eOperating range −40 °C to +80 °C; RoHS-compliant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144970518630,"sku":"201-000015","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/e4a383524e53a283cbc8036fedf56a11.png?v=1788927334"},{"product_id":"ingun-gks-100-201-090-a-1500","title":"Ingun GKS-100 201 090 A 1500, Needle Tip, 100mil","description":"\u003cp\u003eThe INGUN GKS-100 201 090 A 1500 (INGUN item GKS-100-0123) is a standard-stroke test probe on the 2.54 mm (100 mil) grid, plugging into a KS-100 receptacle with quick exchange.\u003c\/p\u003e\n\u003cp\u003eThe 01 tip is a self-cleaning 30° needle. It is the sharpest, most concentrated tip in the family: the reason to pick it is a small, clean target — a test pad or land that is too small for a crown head, or a via you need to reach into — where the priority is landing exactly where you aimed. It is rated for pad contact only, and because the whole spring force acts on a fine point it will mark the surface. The 1500 spring (1.5 N) is the middle force for the family; the 2000 variant is available where a firmer bite is needed.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e01 30° needle tip, self-cleaning, ø0.9 mm (.035 in), steel, gold-plated\u003c\/li\u003e\n\u003cli\u003e2.54 mm (100 mil) grid, barrel diameter 1.37 mm (.053 in), collar height 00\u003c\/li\u003e\n\u003cli\u003eTotal length 33.4 mm (1.31 in)\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm (.169 in), maximum stroke 6.35 mm (.25 in)\u003c\/li\u003e\n\u003cli\u003eSpring force 1.5 N (5.39 ozf) at working stroke; pre-load 0.49 N\u003c\/li\u003e\n\u003cli\u003e5 A rated current, typical resistance 20 mΩ\u003c\/li\u003e\n\u003cli\u003eContacts pads; plug-in mounting in KS-100, quick-exchange\u003c\/li\u003e\n\u003cli\u003eOperating range −40 °C to +80 °C; RoHS-compliant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144970682470,"sku":"201-000016","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/da217a95b4937988b940c3337597f5b0.png?v=1788927337"},{"product_id":"ingun-gks-075-207-100-a-2000-probe","title":"Ingun GKS-075 207 100 A 2000 Probe, Chisel Tip, 75mil","description":"\u003cp\u003eThe INGUN GKS-075 207 100 A 2000 (INGUN item GKS-075-0005) is a standard-stroke test probe on the 1.91 mm (75 mil) grid, plugging into a KS-075 receptacle with quick exchange. The 75 mil (1.91 mm) family is the middle rung between the 100 mil (2.54 mm) GKS-100 and the 50 mil (1.27 mm) GKS-050 — enough density for most modern boards without the fragility of the finest barrels.\u003c\/p\u003e\n\u003cp\u003eThe 07 tip is a self-cleaning 90° three-edged chisel. The three edges wipe across the target as the probe compresses, so oxide and flux are sheared away rather than merely punctured, and the load is spread over more area than a dagger would use. At ø1 mm this is a comparatively large head for a 75 mil (1.91 mm) probe, giving good tolerance to landing error on pads and vias. Fitted here with the strongest common GKS-075 spring at 2 N.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e07 90° 3-edged chisel, self-cleaning tip, ø1 mm (.039 in), steel, gold-plated\u003c\/li\u003e\n\u003cli\u003e1.91 mm (75 mil) grid, barrel diameter 1.02 mm (.04 in), collar height 00\u003c\/li\u003e\n\u003cli\u003eTotal length 33.1 mm (1.3 in)\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm (.169 in), maximum stroke 6.35 mm (.25 in)\u003c\/li\u003e\n\u003cli\u003eSpring force 2 N (7.19 ozf) at working stroke; pre-load 0.72 N\u003c\/li\u003e\n\u003cli\u003e3 A rated current, typical resistance 20 mΩ\u003c\/li\u003e\n\u003cli\u003eContacts pads and vias; plug-in mounting in KS-075, quick-exchange\u003c\/li\u003e\n\u003cli\u003eOperating range −40 °C to +80 °C; RoHS-compliant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144970813542,"sku":"201-000017","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/aba50e95df2558a2e884e7702dccc5a5.png?v=1788927339"},{"product_id":"ingun-gks-135-307-150-a-1500","title":"Ingun GKS-135 307 150 A 1500, Chisel Tip, 100mil","description":"\u003cp\u003eThe INGUN GKS-135 307 150 A 1500 (INGUN item GKS-135-0045) is a long-stroke test probe on the 2.54 mm (100 mil) grid. Its 9.3 mm working stroke is more than double a standard GKS-100's, which is what you need when targets sit at very different heights, when the board bows under load, or when a contact has to reach down into a recess.\u003c\/p\u003e\n\u003cp\u003eThe 07 tip is a self-cleaning 90° three-edged chisel at ø1.5 mm — a broad, wiping contact that keeps resistance low on solder without the point loading of a dagger. This is the 1.5 N version of the same geometry as the 2000-spring GKS-135 307 150 A 2000: pick this one when the extra stroke is what you are after and total probe-field load, not contact force, is the limiting factor. Despite the long travel it still uses the standard KS-100 receptacle.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e07 90° 3-edged chisel, self-cleaning tip, ø1.5 mm (.059 in), CuBe, gold-plated\u003c\/li\u003e\n\u003cli\u003e2.54 mm (100 mil) grid, barrel diameter 1.37 mm (.053 in), collar height 00\u003c\/li\u003e\n\u003cli\u003eTotal length 38.7 mm (1.52 in)\u003c\/li\u003e\n\u003cli\u003eWorking stroke 9.3 mm (.366 in), maximum stroke 11.5 mm (.452 in)\u003c\/li\u003e\n\u003cli\u003eSpring force 1.5 N (5.39 ozf) at working stroke; pre-load 0.23 N\u003c\/li\u003e\n\u003cli\u003e5 A rated current, typical resistance 30 mΩ\u003c\/li\u003e\n\u003cli\u003eContacts pads and vias; plug-in mounting in KS-100, quick-exchange\u003c\/li\u003e\n\u003cli\u003eOperating range −40 °C to +80 °C; RoHS-compliant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144970977382,"sku":"201-000018","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/a4f9bd0a7b870df3aae0efcda931bafc.png?v=1788927342"},{"product_id":"ingun-gks-135-225-130-a-1500","title":"Ingun GKS-135 225 130 A 1500, Crown Tip, 100mil","description":"\u003cp\u003eThe INGUN GKS-135 225 130 A 1500 (INGUN item GKS-135-0140) is a long-stroke test probe on the 2.54 mm (100 mil) grid, offering 9.3 mm of working stroke against the 4.3 mm of a standard GKS-100 while still using the ordinary KS-100 receptacle.\u003c\/p\u003e\n\u003cp\u003eThe 25 tip is a self-cleaning 6-point crown with a middle point, and that combination is specifically aimed at posts and pins: the surrounding crown captures and centres a round lead, while the centre point makes contact on the end face. Together with the long stroke it is the natural choice for contacting header pins, through-hole leads and connector posts of varying height, where a flat or chisel tip would slide off the top of the lead.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e25 6-point crown with middle point, self-cleaning, ø1.3 mm (.051 in), steel, gold-plated\u003c\/li\u003e\n\u003cli\u003e2.54 mm (100 mil) grid, barrel diameter 1.37 mm (.053 in), collar height 00\u003c\/li\u003e\n\u003cli\u003eTotal length 38.7 mm (1.52 in)\u003c\/li\u003e\n\u003cli\u003eWorking stroke 9.3 mm (.366 in), maximum stroke 11.5 mm (.452 in)\u003c\/li\u003e\n\u003cli\u003eSpring force 1.5 N (5.39 ozf) at working stroke; pre-load 0.23 N\u003c\/li\u003e\n\u003cli\u003e5 A rated current, typical resistance 30 mΩ\u003c\/li\u003e\n\u003cli\u003eContacts posts and pins; plug-in mounting in KS-100, quick-exchange\u003c\/li\u003e\n\u003cli\u003eOperating range −40 °C to +80 °C; RoHS-compliant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144971141222,"sku":"201-000019","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/35d08a83d81b2e65e548de544bb74611.png?v=1788927345"},{"product_id":"ingun-gks-004-308-396-a-1500","title":"Ingun GKS-004 308 396 A 1500, Star Tip, 187mil","description":"\u003cp\u003eThe INGUN GKS-004 308 396 A 1500 (INGUN item GKS-004-0017) is a short, robust test probe on a coarse 4.75 mm (187 mil) grid with an unusually large ø3.96 mm head. It is built for targets that are big, not dense: battery and power terminals, large through-hole leads, screw posts and heavy connector contacts, where a 100 mil (2.54 mm) probe would be lost on the pad.\u003c\/p\u003e\n\u003cp\u003eThe 08 tip is a self-cleaning 90° cone. On a large round or irregular target the cone self-centres as the probe compresses and the conical flank wipes the surface, so contact does not depend on the fixture landing the probe exactly on centre. Being from the short\/robust GKS family the 2.36 mm barrel is stiff enough to take side loading that would bend a fine probe, and the part is rated to 6 A. It plugs into a KS-004 receptacle and supports quick exchange.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e08 90° conical, self-cleaning tip, ø3.96 mm (.155 in), CuBe, gold-plated\u003c\/li\u003e\n\u003cli\u003e4.75 mm (187 mil) grid, barrel diameter 2.36 mm (.092 in), collar height 00\u003c\/li\u003e\n\u003cli\u003eTotal length 33.6 mm (1.32 in)\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.4 mm (.173 in), maximum stroke 6.35 mm (.25 in)\u003c\/li\u003e\n\u003cli\u003eSpring force 1.5 N (5.39 ozf) at working stroke; pre-load 0.76 N\u003c\/li\u003e\n\u003cli\u003e6 A rated current, typical resistance 20 mΩ\u003c\/li\u003e\n\u003cli\u003eContacts pads, vias and female connectors; plug-in mounting in KS-004, quick-exchange\u003c\/li\u003e\n\u003cli\u003eOperating range −40 °C to +80 °C; RoHS-compliant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144971305062,"sku":"201-000020","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/6f68cb61e761ee80dcd05330bb3a8e7e.png?v=1788927347"},{"product_id":"centalic-pq50-b-5-5gg-test-probe-needle-tip","title":"Centalic PQ50-B-5.5GG Test Probe, Needle Tip, 50mil","description":"\u003cp\u003eThe Centalic PQ50-B-5.5GG is an ICT spring probe on 1.27 mm (50 mil) minimum centres — the fine-pitch end of Centalic's PQ range, for boards whose test points are packed too tightly for 75 or 100 mil (2.54 mm) probes. It works with a matching PQ50 receptacle pressed into the probe plate, so a worn probe is pulled and replaced without touching the plate or the wiring.\u003c\/p\u003e\n\u003cp\u003eThe B tip is a needle: a single sharp point that puts the whole spring force onto a very small area, so it breaks through flux residue and light oxide and lands precisely on a small pad. That precision is exactly why you want it at 50 mil (1.27 mm) pitch, where a wider crown head would overhang neighbouring features. It will mark the target — for cosmetically sensitive or plated surfaces choose the cupped A tip instead. The 5.5GG suffix denotes the 150 gf (5.5 oz) spring, the firmest of the three PQ50 options and the one to specify when contact reliability on contaminated boards matters more than board load.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNeedle (B) tip, gold-plated\u003c\/li\u003e\n\u003cli\u003e1.27 mm (50 mil) minimum centres; mounting hole ø1.0 mm\u003c\/li\u003e\n\u003cli\u003eRated stroke 4.30 mm, full stroke 6.35 mm\u003c\/li\u003e\n\u003cli\u003eSpring force 150 gf (5.5 oz) at rated stroke\u003c\/li\u003e\n\u003cli\u003e3 A continuous, contact resistance 60 mΩ max\u003c\/li\u003e\n\u003cli\u003eBeCu plunger, Au\/Ni plated; phosphor-bronze barrel and casing, gold-plated; gold-plated spring\u003c\/li\u003e\n\u003cli\u003eSold per unit; requires a matching PQ50 receptacle\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144971501670,"sku":"201-000023","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/5a1556e3244facc6b1ac4e612c82a7c4.png?v=1788927352"},{"product_id":"centalic-pq50-a-5-5gg-test-probe-cupped-tip","title":"Centalic PQ50-A-5.5GG Test Probe, Cupped Tip, 50mil","description":"\u003cp\u003eThe Centalic PQ50-A-5.5GG is an ICT spring probe on 1.27 mm (50 mil) minimum centres, the fine-pitch member of Centalic's PQ range. It seats in a matching PQ50 receptacle in the probe plate, so probes can be swapped as they wear without rebuilding the fixture.\u003c\/p\u003e\n\u003cp\u003eThe A tip is cupped — a concave head with a raised rim rather than a point. The cup is shaped to receive the top of a round target: a solder bead, a through-hole lead end, a header pin or a component lead. The rim captures and centres the lead as the probe compresses, so contact does not depend on the fixture landing dead centre, and the load is spread over the rim rather than concentrated on a point. Choose it over the needle (B) tip wherever the target is domed or round; choose the needle instead for small flat pads. The 5.5GG suffix denotes the 150 gf (5.5 oz) spring, the firmest of the PQ50 options.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCupped (A) tip, gold-plated\u003c\/li\u003e\n\u003cli\u003e1.27 mm (50 mil) minimum centres; mounting hole ø1.0 mm\u003c\/li\u003e\n\u003cli\u003eRated stroke 4.30 mm, full stroke 6.35 mm\u003c\/li\u003e\n\u003cli\u003eSpring force 150 gf (5.5 oz) at rated stroke\u003c\/li\u003e\n\u003cli\u003e3 A continuous, contact resistance 60 mΩ max\u003c\/li\u003e\n\u003cli\u003eBeCu plunger, Au\/Ni plated; phosphor-bronze barrel and casing, gold-plated; gold-plated spring\u003c\/li\u003e\n\u003cli\u003eSold per unit; requires a matching PQ50 receptacle\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144971665510,"sku":"201-000024","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/3bb89113dc2b9b909ee1145417b3ebc5.png?v=1788927354"},{"product_id":"qa-tech-125-prg2509s","title":"QA Tech 125-PRG2509S, Crown Tip, 125mil","description":"\u003cp\u003eThe QA Technology 125-PRG2509S is a conventional spring probe from the 125-25 series: 125 mil (3.18 mm) centres, 0.250 in (6.35 mm) full stroke and a 0.167 in (4.24 mm) working stroke. QA Technology designed this series for loaded-board and high-current testing, and it is the coarse-pitch, high-current step above the 100 mil (2.54 mm) range. It mounts in a 125-SD series socket (solder-cup or wire-wrap), so probes are replaced from the top of the plate without re-terminating.\u003c\/p\u003e\n\u003cp\u003eReading the ordering code: G is the tube material — nickel silver, OD gold plated, giving under 15 mΩ average resistance and a 16.9 A rating at 120 °C (23.0 A at 204 °C). 09 is the serrated tip at ø0.100 in (2.54 mm): a broad, toothed face whose many small edges bite through flux residue and oxide across the whole contact area, which is what keeps joint resistance low when the probe is also carrying current. S is the standard spring, 2.2 oz (62 g) pre-load rising to 7.0 oz (198 g\/1.95 N) at working stroke, rated for one million cycles. Plungers are heat-treated BeCu, gold plated over nickel.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e09 serrated tip, ø0.100 in (2.54 mm); heat-treated BeCu, gold over nickel\u003c\/li\u003e\n\u003cli\u003e125 mil (3.18 mm) centres\u003c\/li\u003e\n\u003cli\u003eWorking stroke 0.167 in (4.24 mm), full stroke 0.250 in (6.35 mm)\u003c\/li\u003e\n\u003cli\u003eStandard (S) spring: 7.0 oz (198 g \/ 1.95 N) at working stroke, 2.2 oz pre-load\u003c\/li\u003e\n\u003cli\u003eStainless-steel spring, 1,000,000 cycle life at working stroke\u003c\/li\u003e\n\u003cli\u003eG tube: nickel silver, OD gold plated; average resistance \u0026lt; 15 mΩ\u003c\/li\u003e\n\u003cli\u003e16.9 A at 120 °C (23.0 A at 204 °C)\u003c\/li\u003e\n\u003cli\u003eWorking temperature −45 °C to 120 °C lubricated; to 204 °C unlubricated\u003c\/li\u003e\n\u003cli\u003eSold per unit; requires a 125-SD 250 series socket\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144972091494,"sku":"201-000027","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/d08187debf84ce849f955b77b70663b2.png?v=1788927363"},{"product_id":"centalic-pq100-h5-5-5gg-test-probe-crown-tip","title":"Centalic PQ100-H5-5.5GG Test Probe, Crown Tip, 100mil","description":"\u003cp\u003eThe Centalic PQ100-H5-5.5GG is an ICT spring probe on 2.54 mm (100 mil) minimum centres — the standard workhorse pitch for in-circuit and functional test fixtures, and the most forgiving of the Centalic PQ range to build and maintain. It mounts in a matching PQ100 receptacle so worn probes are swapped without disturbing the plate.\u003c\/p\u003e\n\u003cp\u003eThe H5 tip is a crown: a ring of points around an open centre. The points bite through flux residue and oxide on a solder joint while the crown shape stays tolerant of landing error, and the open centre lets debris clear instead of packing into the tip. It is the general-purpose ICT tip, and the default choice unless a target is unusually small (use a needle) or unusually delicate (use a cupped or radiused tip). The 5.5GG suffix denotes the 150 gf (5.5 oz) spring, a mid-range force in a family that runs from 56 gf up to 312 gf — firm enough for reliable contact without driving total probe-field load unnecessarily high. The PQ100 also has the lowest contact resistance in the range at 30 mΩ maximum.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCrown (H5) tip, gold-plated\u003c\/li\u003e\n\u003cli\u003e2.54 mm (100 mil) minimum centres; mounting hole ø1.75 mm\u003c\/li\u003e\n\u003cli\u003eRated stroke 4.30 mm, full stroke 6.35 mm\u003c\/li\u003e\n\u003cli\u003eSpring force 150 gf (5.5 oz) at rated stroke\u003c\/li\u003e\n\u003cli\u003e3 A continuous, contact resistance 30 mΩ max\u003c\/li\u003e\n\u003cli\u003eBeCu plunger, Au\/Ni plated; brass barrel and casing, gold-plated; gold-plated spring\u003c\/li\u003e\n\u003cli\u003eSold per unit; requires a matching PQ100 receptacle\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144972255334,"sku":"201-000029","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/beab494510677ef7ba162c41d7ead01c.png?v=1788927365"},{"product_id":"centalic-pe75-u-5-5gg-test-probe-crown-tip","title":"Centalic PE75-U-5.5GG Test Probe, Crown Tip, 75mil","description":"\u003cp\u003eThe Centalic PE75-U-5.5GG is an ICT spring probe on 1.91 mm (75 mil) minimum centres — the middle pitch in Centalic's PE range, dense enough for most modern boards without the handling fragility of a 50 mil (1.27 mm) probe. It mounts in a matching PE75 receptacle in the probe plate, so worn probes are pulled and replaced without touching the plate or the wiring.\u003c\/p\u003e\n\u003cp\u003eThe U tip is a crown: a ring of points around an open centre that bites through flux residue and light oxide on solder joints, tolerates small landing errors and lets debris clear instead of packing in. It is the general-purpose choice for a mixed board — move to a needle tip only where a target is too small for the crown to sit on, and to a cupped tip where the target is a round lead. The 5.5GG suffix denotes the 150 gf (5.5 oz) spring, the lightest of the four PE75 force options (150 \/ 200 \/ 227 \/ 300 gf), which makes this the variant to specify when the probe count is high and total board load is the constraint.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCrown (U) tip, gold-plated\u003c\/li\u003e\n\u003cli\u003e1.91 mm (75 mil) minimum centres; mounting hole ø1.35 mm\u003c\/li\u003e\n\u003cli\u003eRated stroke 4.30 mm, full stroke 6.40 mm\u003c\/li\u003e\n\u003cli\u003eSpring force 150 gf (5.5 oz) at rated stroke\u003c\/li\u003e\n\u003cli\u003e3 A continuous, contact resistance 40 mΩ max\u003c\/li\u003e\n\u003cli\u003eBeCu plunger, Au\/Ni plated; brass barrel and casing, gold-plated; gold-plated spring\u003c\/li\u003e\n\u003cli\u003eSold per unit; requires a matching PE75 receptacle\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144972451942,"sku":"201-000030","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/b01c132ab2272d0f31ffd79f9d510382.png?v=1788927368"},{"product_id":"centalic-pq100-h5-4gg-test-probe-crown-tip","title":"Centalic PQ100-H5-4GG Test Probe, Crown Tip, 100mil","description":"\u003cp\u003eThe Centalic PQ100-H5-4GG is an ICT spring probe on 2.54 mm (100 mil) minimum centres, the standard pitch for in-circuit and functional test fixtures. It mounts in a matching PQ100 receptacle in the probe plate, so probes can be exchanged as they wear without rebuilding the fixture or re-terminating the wiring.\u003c\/p\u003e\n\u003cp\u003eThe H5 tip is a crown — points arranged around an open centre — which cuts through flux residue and oxide on solder joints while remaining tolerant of small landing errors, and lets debris clear rather than trapping it. It is the general-purpose ICT tip. This part is the lighter-spring sibling of the PQ100-H5-5.5GG: the 4GG suffix denotes the 4 oz spring option against 5.5 oz (150 gf) for that part. Specify it when the probe count is high enough that per-probe force adds up to significant board deflection, or when the assembly is thin or already populated; step up to the 5.5 oz version when contamination is defeating the lighter spring.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCrown (H5) tip, gold-plated; 4 oz spring option\u003c\/li\u003e\n\u003cli\u003e2.54 mm (100 mil) minimum centres; mounting hole ø1.75 mm\u003c\/li\u003e\n\u003cli\u003eRated stroke 4.30 mm, full stroke 6.35 mm\u003c\/li\u003e\n\u003cli\u003e3 A continuous, contact resistance 30 mΩ max\u003c\/li\u003e\n\u003cli\u003eBeCu plunger, Au\/Ni plated; brass barrel and casing, gold-plated; gold-plated spring\u003c\/li\u003e\n\u003cli\u003eSold per unit; requires a matching PQ100 receptacle\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144973041766,"sku":"201-000033","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/beab494510677ef7ba162c41d7ead01c_511c053e-b0ae-4846-8e2b-e029e78c361d.png?v=1788927374"},{"product_id":"ingun-gks-100-204-130-a-1000","title":"Ingun GKS-100 204 130 A 1000, Crown Tip, 100mil","description":"\u003cp\u003eThe INGUN GKS-100 204 130 A 1000 (INGUN item GKS-100-0116) is a spring-loaded test probe for the 2.54 mm (100 mil) grid, seated in a KS-100 receptacle so it can be replaced from the top of the fixture without disturbing the wiring.\u003c\/p\u003e\n\u003cp\u003eTip style 04 is a four-point crown. The four points straddle a rounded target and grip it from all sides, which is why a crown holds position on a pin, a post or a trimmed lead far better than a flat or bullet-nosed tip would — INGUN list this item for contacting pins, posts and pads alike. Splitting the load four ways also lets it bite through light oxide without the punch-through risk of a single needle. At 1.3 mm the crown is the mid-size face in the 100 mil (2.54 mm) range. The 1 N spring is the lightest commonly stocked, which keeps aggregate board load down when a whole field of these lands at once.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTip style 04, 4-point crown; tip diameter 1.3 mm (0.051 in)\u003c\/li\u003e\n\u003cli\u003eBarrel diameter 1.37 mm (0.053 in), total length 33.4 mm (1.31 in)\u003c\/li\u003e\n\u003cli\u003eGrid pitch 2.54 mm (100 mil); minimum centre distance 2.54 mm (100 mil)\u003c\/li\u003e\n\u003cli\u003eSpring force 1 N at working stroke, pre-load 0.35 N\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm, maximum stroke 6.35 mm\u003c\/li\u003e\n\u003cli\u003eCurrent rating 5 A, contact resistance 20 mΩ typical\u003c\/li\u003e\n\u003cli\u003eSteel plunger, gold-plated\u003c\/li\u003e\n\u003cli\u003eContacts pins, posts and pads; receptacle KS-100. Operating range −40 °C to 80 °C\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144975237222,"sku":"201-000044","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/bc1d2113f540e486d99ec4bee5ddd84c.png?v=1788927408"},{"product_id":"ingun-gks-075-204-115-a-1000","title":"Ingun GKS-075 204 115 A 1000, Crown Tip, 75mil","description":"\u003cp\u003eThe INGUN GKS-075 204 115 A 1000 (INGUN item GKS-075-0180) is a standard-stroke test probe on the 1.91 mm (75 mil) grid, plugging into a KS-075 receptacle with quick exchange.\u003c\/p\u003e\n\u003cp\u003eThe 04 tip is a plain 4-point crown — four points around an open centre, without the self-cleaning relief of the 14 style. The crown grips pads, posts and pins from four sides, which makes it forgiving of landing error and of leads that are not quite square, and is the general-purpose choice for mixed targets on one board. At ø1.15 mm the head is on the large side for a 75 mil (1.91 mm) probe. The 1.0 N spring is a moderate force: heavier than the 0600 low-load option, lighter than the 1500 and 2000 springs used where flux residue demands more bite.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e04 4-point crown tip, ø1.15 mm (.045 in), steel, gold-plated\u003c\/li\u003e\n\u003cli\u003e1.91 mm (75 mil) grid, barrel diameter 1.02 mm (.04 in), collar height 00\u003c\/li\u003e\n\u003cli\u003eTotal length 33.1 mm (1.3 in)\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm (.169 in), maximum stroke 6.35 mm (.25 in)\u003c\/li\u003e\n\u003cli\u003eSpring force 1 N (3.59 ozf) at working stroke; pre-load 0.4 N\u003c\/li\u003e\n\u003cli\u003e3 A rated current, typical resistance 20 mΩ\u003c\/li\u003e\n\u003cli\u003eContacts pads, posts and pins; plug-in mounting in KS-075, quick-exchange\u003c\/li\u003e\n\u003cli\u003eOperating range −40 °C to +80 °C; RoHS-compliant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144975401062,"sku":"201-000045","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/a13b2e344d2d19dec1e62403022ecab1.png?v=1788927410"},{"product_id":"ingun-gks-100-214-050-a-1000","title":"Ingun GKS-100 214 050 A 1000, Crown Tip, 100mil","description":"\u003cp\u003eThe INGUN GKS-100 214 050 A 1000 (INGUN item GKS-100-0055) is a standard-stroke test probe on the 2.54 mm (100 mil) grid, plugging into a KS-100 receptacle with quick exchange.\u003c\/p\u003e\n\u003cp\u003eThis is the small-head, light-spring end of the GKS-100 range. The 14 tip is a self-cleaning 4-point crown, the family's general-purpose style, but at ø0.5 mm it is the narrowest head offered — sized for small test pads and fine leads that a 1.3 mm crown would overhang, while still mounting on ordinary 100 mil (2.54 mm) centres. Paired with the 1000 spring (1 N) rather than the family's standard 2 N, it is the variant to use when the probe count is high enough that per-probe force drives total board load. Full 5 A rating is retained.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e14 4-point crown, self-cleaning tip, ø0.5 mm (.019 in), steel, gold-plated\u003c\/li\u003e\n\u003cli\u003e2.54 mm (100 mil) grid, barrel diameter 1.37 mm (.053 in), collar height 00\u003c\/li\u003e\n\u003cli\u003eTotal length 33.4 mm (1.31 in)\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm (.169 in), maximum stroke 6.35 mm (.25 in)\u003c\/li\u003e\n\u003cli\u003eSpring force 1 N (3.59 ozf) at working stroke; pre-load 0.35 N\u003c\/li\u003e\n\u003cli\u003e5 A rated current, typical resistance 20 mΩ\u003c\/li\u003e\n\u003cli\u003eContacts pads, posts and pins; plug-in mounting in KS-100, quick-exchange\u003c\/li\u003e\n\u003cli\u003eOperating range −40 °C to +80 °C; RoHS-compliant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144975695974,"sku":"201-000047","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/c7fa711bc48f2b94f236a943e0ac9492.png?v=1788927415"},{"product_id":"generic-p75-b1-probe","title":"Generic P75-B1 Probe, Needle Tip, 75mil","description":"\u003cp\u003eThe P75-B1 is a spring-loaded test probe from the generic P75 family, used to make temporary contact with a test point on a PCB during in-circuit and functional test. It mounts in a matching receptacle in the fixture's probe plate, so a worn or bent probe can be pulled and replaced from the top without disturbing the wiring underneath.\u003c\/p\u003e\n\u003cp\u003eThe B1 spear tip is the general-purpose choice for bare vias, through-hole leads and tinned pads — the point breaks through light flux residue and centres itself in a via rather than skating off the edge. The P75 family sits in the middle of the generic ladder, closer-pitched than P100 and more robust than P50, and 100 g of spring force at working stroke keeps total board loading manageable when several hundred probes land at once.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSpear (B1) tip\u003c\/li\u003e\n\u003cli\u003eProbe diameter 0.74 mm, tip diameter 0.67 mm\u003c\/li\u003e\n\u003cli\u003eWorking stroke 2 mm, full stroke 2.5 mm\u003c\/li\u003e\n\u003cli\u003eSpring force 100 g at working stroke\u003c\/li\u003e\n\u003cli\u003eCurrent rating 3 A, contact resistance 50 mΩ\u003c\/li\u003e\n\u003cli\u003eMinimum centre distance 1.73 mm (68 mil)\u003c\/li\u003e\n\u003cli\u003eMoving-plate hole diameter 1 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144976220262,"sku":"201-0001-00","price":0.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/cbf6b400ebcdf513aca0fb28968f6ac6.jpg?v=1788927423"},{"product_id":"generic-p100-b1-probe","title":"Generic P100-B1 Probe, Needle Tip, 100mil","description":"\u003cp\u003eA P100-series spring test probe with a spear tip, for use with a matching P100 receptacle in a fixture's probe plate. The P100 family is the 100 mil (2.54 mm) class workhorse: the pitch most in-circuit and functional test fixtures are built on, and the size that keeps probe replacement straightforward over the life of a fixture.\u003c\/p\u003e\n\u003cp\u003eThe spear tip concentrates the spring force on a single sharpened point, so it punches through flux residue and light oxide and lands precisely on a small pad or land. That precision is the reason to choose it over a crown or cup head; the cost is that it will witness the target surface, so for plated or cosmetically sensitive contacts pick a cupped or radiused tip instead. At 180 gf this carries a firm spring for its class, which suits contaminated boards but adds up quickly across a dense probe field.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSpear tip; tip diameter 1.05 mm, plunger diameter 1 mm\u003c\/li\u003e\n\u003cli\u003eMinimum centre distance 2.16 mm (85 mil); moving-plate hole ø2 mm\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm, full stroke 6.35 mm\u003c\/li\u003e\n\u003cli\u003eSpring force 180 gf at working stroke\u003c\/li\u003e\n\u003cli\u003e3 A rated current, typical resistance 50 mΩ\u003c\/li\u003e\n\u003cli\u003eSold per unit; requires a matching P100 receptacle\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144976384102,"sku":"201-0003-00","price":0.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/bcc5af94df05f61221c24744d2cdfe4b.png?v=1788927426"},{"product_id":"generic-p75-a2-probe","title":"Generic P75-A2 Probe, Cupped Tip, 75mil","description":"\u003cp\u003eThe P75-A2 is a spring-loaded test probe from the generic P75 family, used to make temporary contact with a test point on a PCB during in-circuit and functional test. It mounts in a matching receptacle in the fixture's probe plate, so a worn probe can be replaced from the top without rewiring.\u003c\/p\u003e\n\u003cp\u003eThe A2 cupped tip is the counterpart to the spear-tipped B1: instead of piercing a flat pad it seats over a rounded target, which makes it the right pick for solder-bumped pads, wire ends, and the cut ends of through-hole component leads. The concave face captures the dome and stops the probe walking off-centre, at the cost of needing a target that actually stands proud of the board. At 1.29 mm the tip is large enough that it wants a reasonably open keep-out around the test point.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCupped (A2) tip\u003c\/li\u003e\n\u003cli\u003eProbe diameter 1.3 mm, tip diameter 1.29 mm\u003c\/li\u003e\n\u003cli\u003eWorking stroke 2 mm, full stroke 2.5 mm\u003c\/li\u003e\n\u003cli\u003eSpring force 100 g at working stroke\u003c\/li\u003e\n\u003cli\u003eCurrent rating 3 A, contact resistance 50 mΩ\u003c\/li\u003e\n\u003cli\u003eMinimum centre distance 1.73 mm (68 mil)\u003c\/li\u003e\n\u003cli\u003eMoving-plate hole diameter 2.5 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144976679014,"sku":"201-0004-00","price":0.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/8efad17c10cc68d7bbacdaf293fe21f2.png?v=1788927429"},{"product_id":"generic-p50-q1-probe","title":"Generic P50-Q1 Probe, 50mil","description":"\u003cp\u003eA P50-series spring test probe for use with a matching P50 receptacle in a fixture's probe plate. The P50 class is the 50 mil (1.27 mm) pitch family — the fine-pitch option used when a board's test points are packed too tightly for 75 mil (1.91 mm) or 100 mil (2.54 mm) probes, typically fine-pitch connector fields, escape vias and dense test-point arrays.\u003c\/p\u003e\n\u003cp\u003eWorking at this pitch means accepting the family's trade-offs: a slender barrel that is less tolerant of side loading than a coarser probe, a lower current rating, and tighter demands on probe-plate hole accuracy. In return you get contact density no coarser probe can reach. Like the rest of the P-series it seats in a receptacle rather than mounting directly, so worn probes are pulled and replaced without disturbing the plate or the wiring.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eP50 series, 50 mil (1.27 mm) class fine-pitch spring probe\u003c\/li\u003e\n\u003cli\u003eQ1 tip style\u003c\/li\u003e\n\u003cli\u003eSold per unit; requires a matching P50 receptacle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDetailed stroke, spring force and tip dimensions are not recorded against this part number. Confirm them with FixturFab before designing this part into a fixture.\u003c\/p\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144976810086,"sku":"201-0005-00","price":0.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/16ac16acc03e416ed3b9315cdd88984d.jpg?v=1788927431"},{"product_id":"generic-p50-b1-probe","title":"Generic P50-B1 Probe, Needle Tip, 50mil","description":"\u003cp\u003eThe P50-B1 is a spring-loaded test probe from the generic P50 family, the finest-pitch tier of the generic range, used to contact test points on dense PCBs during in-circuit and functional test. It mounts in a matching receptacle in the fixture's probe plate so probes can be changed from the top as tips wear.\u003c\/p\u003e\n\u003cp\u003eReach for a P50 when the target grid is too tight for a P75 — a 1.22 mm (48 mil) minimum centre distance lets probes sit roughly a third closer together than the P75 family allows. The trade is mechanical: the plunger is slimmer, the 75 g spring is lighter, and the probe is correspondingly less tolerant of side load and mis-registration. The B1 spear tip suits bare vias and tinned pads, where the point cuts through light surface residue and self-centres in a plated hole.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSpear (B1) tip\u003c\/li\u003e\n\u003cli\u003eProbe diameter 0.48 mm, tip diameter 0.5 mm\u003c\/li\u003e\n\u003cli\u003eWorking stroke 2 mm, full stroke 2.65 mm\u003c\/li\u003e\n\u003cli\u003eSpring force 75 g at working stroke\u003c\/li\u003e\n\u003cli\u003eCurrent rating 3 A, contact resistance 50 mΩ\u003c\/li\u003e\n\u003cli\u003eMinimum centre distance 1.22 mm (48 mil)\u003c\/li\u003e\n\u003cli\u003eMoving-plate hole diameter 1 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144977006694,"sku":"201-0006-00","price":0.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/7ae0f22d9f22fa4d0bfe5466d9cbc03c.png?v=1788927435"},{"product_id":"ingun-gks-050-214-050-a-1000-probe-14-crown-4-point-self-cleaning-tip","title":"Ingun GKS-050 214 050 A 1000 Probe, Crown Tip, 50mil","description":"\u003cp\u003eThe INGUN GKS-050 214 050 A 1000 (INGUN item GKS-050-0001) is a standard-stroke test probe on the 1.27 mm (50 mil) grid — the fine-pitch step below the 75 mil (1.91 mm) GKS-075, for boards whose test-point density no longer allows 1.91 mm (75 mil) centres. It plugs into a KS-050 receptacle and supports quick exchange.\u003c\/p\u003e\n\u003cp\u003eThe 14 tip is a self-cleaning 4-point crown, the same general-purpose geometry used across the GKS families, here scaled to a ø0.5 mm head. The four points cut through flux residue on solder joints and the open centre lets debris clear, while the crown shape stays tolerant of small landing errors — which matters more, not less, at 50 mil (1.27 mm) pitch. Note the trade-offs of the fine family: a 0.78 mm barrel is more easily damaged by side load, and current rating drops to 2 A. Total length is 43.2 mm, longer than the 100 mil (2.54 mm) probes, so allow for it in the plate stack-up.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e14 4-point crown, self-cleaning tip, ø0.5 mm (.019 in), steel, gold-plated\u003c\/li\u003e\n\u003cli\u003e1.27 mm (50 mil) grid, barrel diameter 0.78 mm (.03 in), collar height 00\u003c\/li\u003e\n\u003cli\u003eTotal length 43.2 mm (1.7 in)\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm (.169 in), maximum stroke 6.35 mm (.25 in)\u003c\/li\u003e\n\u003cli\u003eSpring force 1 N (3.59 ozf) at working stroke; pre-load 0.44 N\u003c\/li\u003e\n\u003cli\u003e2 A rated current, typical resistance 20 mΩ\u003c\/li\u003e\n\u003cli\u003eContacts pads, posts and pins; plug-in mounting in KS-050, quick-exchange\u003c\/li\u003e\n\u003cli\u003eOperating range −40 °C to +80 °C; RoHS-compliant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144977170534,"sku":"201-0007-00","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/5b5f5e233f074ec39360e2c9cd455072.png?v=1788927437"},{"product_id":"generic-p75-lm2-probe","title":"Generic P75-LM2 Probe, Star Tip, 75mil","description":"\u003cp\u003eA P75-series spring test probe with a star tip, for use with a matching P75 receptacle in a fixture's probe plate. The 75 mil (1.91 mm) class sits between the 100 mil (2.54 mm) and 50 mil (1.27 mm) families: dense enough for most modern boards without the handling fragility of the finest barrels.\u003c\/p\u003e\n\u003cp\u003eThe star tip is a multi-point head — several sharpened points arranged around a centre — which gives it two useful properties on a production fixture. The points bite through flux residue and light oxide on solder joints, and because contact is made at several places at once the joint is far less sensitive to exactly how the probe lands. That makes it the general-purpose tip for a mixed board. Note the short travel: this variant has a 2 mm working stroke against the 4.3 mm of a standard-stroke probe, so the fixture must control Z-height more tightly, in exchange for a shorter, stiffer probe. The light 100 gf spring keeps total probe-field load down in a dense fixture.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStar tip; tip diameter 1.3 mm, plunger diameter 1.3 mm\u003c\/li\u003e\n\u003cli\u003eMinimum centre distance 1.73 mm (68 mil); moving-plate hole ø3 mm\u003c\/li\u003e\n\u003cli\u003eWorking stroke 2 mm, full stroke 2.5 mm (short-stroke type)\u003c\/li\u003e\n\u003cli\u003eSpring force 100 gf at working stroke\u003c\/li\u003e\n\u003cli\u003e3 A rated current, typical resistance 50 mΩ\u003c\/li\u003e\n\u003cli\u003eSold per unit; requires a matching P75 receptacle\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144977858662,"sku":"201-0012-00","price":0.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/e746c3e039853e7c5579b0fe4dfeb2c5.jpg?v=1788927448"},{"product_id":"generic-p100-lm2-probe","title":"Generic P100-LM2 Probe, Star Tip, 100mil","description":"\u003cp\u003eThe P100-LM2 is a spring-loaded test probe from the generic P100 family, the coarsest-pitch and most robust tier of the generic range, used to contact test points on a PCB during in-circuit and functional test. It mounts in a matching receptacle in the fixture's probe plate so probes can be replaced from the top without disturbing the wiring.\u003c\/p\u003e\n\u003cp\u003eThe LM2 star tip lands several sharp points on the target rather than one, biting through oxide and flux residue on flat plated pads where a single spear point would give an intermittent reading. The P100 body carries that tip on a much longer travel than the P50 and P75 families — 4.3 mm working and 6.35 mm full stroke — which absorbs board warp and stack-up tolerance on larger assemblies, and the 180 g spring drives the points home. The cost is footprint: it needs 2.16 mm (85 mil) between probe centres, so it is the wrong choice on a tight grid.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStar (LM2) tip\u003c\/li\u003e\n\u003cli\u003eProbe diameter 1.5 mm, tip diameter 1.8 mm\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm, full stroke 6.35 mm\u003c\/li\u003e\n\u003cli\u003eSpring force 180 g at working stroke\u003c\/li\u003e\n\u003cli\u003eCurrent rating 3 A, contact resistance 50 mΩ\u003c\/li\u003e\n\u003cli\u003eMinimum centre distance 2.16 mm (85 mil)\u003c\/li\u003e\n\u003cli\u003eMoving-plate hole diameter 3 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144978022502,"sku":"201-0013-00","price":0.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/f7f7af64456ce0eb58c872f66206778a.png?v=1788927451"},{"product_id":"generic-p100-a2-probe","title":"Generic P100-A2 Probe, Cupped Tip, 100mil","description":"\u003cp\u003eA P100-series spring test probe with a cupped tip, for use with a matching P100 receptacle in a fixture's probe plate. The P100 family is the 100 mil (2.54 mm) class workhorse used for most in-circuit and functional test fixtures, coarse enough to be easy to build and maintain.\u003c\/p\u003e\n\u003cp\u003eThe cup is a concave head with a raised rim, shaped to receive the top of a round target rather than press on a flat one. The rim captures and centres a solder bead, a through-hole lead end or a header pin as the probe compresses, so contact does not depend on the fixture landing dead centre, and the load spreads around the rim instead of concentrating on a point. Choose it wherever the target is domed or round; choose a spear or crown tip for flat pads. At ø1.5 mm this is a wide cup, sized for the larger lead and bead diameters, and the 180 gf spring gives it a firm seat.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCup tip; tip diameter 1.5 mm, plunger diameter 1.5 mm\u003c\/li\u003e\n\u003cli\u003eMinimum centre distance 2.16 mm (85 mil); moving-plate hole ø3 mm\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm, full stroke 6.35 mm\u003c\/li\u003e\n\u003cli\u003eSpring force 180 gf at working stroke\u003c\/li\u003e\n\u003cli\u003e3 A rated current, typical resistance 50 mΩ\u003c\/li\u003e\n\u003cli\u003eSold per unit; requires a matching P100 receptacle\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144978186342,"sku":"201-0014-00","price":0.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/bb45180b1145977a05a41d5d114e76c2.jpg?v=1788927454"},{"product_id":"ingun-gks-075-204-115-a-1000-probe","title":"Ingun GKS-075 204 115 A 1000 Probe, Crown Tip, 75mil","description":"\u003cp\u003eThe INGUN GKS-075 204 115 A 1000 (INGUN item GKS-075-0180) is a spring-loaded test probe for the 1.91 mm (75 mil) grid, seated in a KS-075 receptacle so it can be replaced from the top of the fixture without rewiring.\u003c\/p\u003e\n\u003cp\u003eTip style 04 is a four-point crown — four points that straddle a rounded target and grip it from all sides, so the probe stays put on a pin, a post or a trimmed component lead where a flat or bullet-nosed tip would slip off the shoulder. Splitting the contact force four ways also lets it cut through light oxide without concentrating everything on one point. INGUN list this item for contacting pins, posts and pads, which makes it a useful general-purpose choice on mixed-technology boards. At 1.15 mm the crown is compact for the 75 mil (1.91 mm) range, and the 1 N spring keeps aggregate board load low.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTip style 04, 4-point crown; tip diameter 1.15 mm (0.045 in)\u003c\/li\u003e\n\u003cli\u003eBarrel diameter 1.02 mm (0.04 in), total length 33.1 mm (1.3 in)\u003c\/li\u003e\n\u003cli\u003eGrid pitch 1.91 mm (75 mil)\u003c\/li\u003e\n\u003cli\u003eSpring force 1 N at working stroke, pre-load 0.4 N\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm, maximum stroke 6.35 mm\u003c\/li\u003e\n\u003cli\u003eCurrent rating 3 A, contact resistance 20 mΩ typical\u003c\/li\u003e\n\u003cli\u003eSteel plunger, gold-plated\u003c\/li\u003e\n\u003cli\u003eContacts pins, posts and pads; receptacle KS-075. Operating range −40 °C to 80 °C\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144978350182,"sku":"201-0015-00","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/85b27462d606a62eac1f0bdf165896ad.png?v=1788927457"},{"product_id":"generic-p50-e2-test-probe","title":"Generic P50-E2 Test Probe, 50mil","description":"\u003cp\u003eThe P50-E2 is a spring-loaded test probe from the generic P50 family, the finest-pitch tier of the generic range, used to contact test points on dense PCBs during in-circuit and functional test. It mounts in a matching receptacle in the fixture's probe plate so probes can be changed from the top as tips wear.\u003c\/p\u003e\n\u003cp\u003eReach for a P50 when the target grid is too tight for a P75: a 1.22 mm (48 mil) minimum centre distance lets probes sit roughly a third closer together. The trade is mechanical — a slimmer plunger, a lighter 75 g spring, and less tolerance of side load and mis-registration. Within the common P50 body the suffix identifies the tip geometry, so an E2 can be swapped for any other P50 in the same receptacle when a test point calls for a different contact style.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGeneric P50 family, E2 tip variant\u003c\/li\u003e\n\u003cli\u003eFamily-typical minimum centre distance 1.22 mm (48 mil)\u003c\/li\u003e\n\u003cli\u003eFamily-typical working stroke 2 mm, full stroke 2.65 mm\u003c\/li\u003e\n\u003cli\u003eFamily-typical spring force 75 g at working stroke\u003c\/li\u003e\n\u003cli\u003eFamily-typical current rating 3 A, contact resistance 50 mΩ\u003c\/li\u003e\n\u003cli\u003eReceptacle-mounted; replaceable from the top of the fixture\u003c\/li\u003e\n\u003cli\u003eSold per unit\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144978710630,"sku":"201-0017-00","price":0.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/b7cb91ffb61315156ab0df2d8cd927ff.png?v=1788927462"},{"product_id":"ingun-gks-075-214-050-a-1000-14-crown-4-point-self-cleaning","title":"Ingun GKS-075 214 050 A 1000, Crown Tip, 75mil","description":"\u003cp\u003eThe INGUN GKS-075 214 050 A 1000 (INGUN item GKS-075-0014) is a standard-stroke test probe on the 1.91 mm (75 mil) grid, plugging into a KS-075 receptacle with quick exchange.\u003c\/p\u003e\n\u003cp\u003eThe 14 tip is a self-cleaning 4-point crown — four points around an open centre, relieved so flux and solder debris clear rather than packing into the tip. It is the general-purpose ICT tip: enough bite for flux-contaminated solder joints, enough width to be tolerant of landing error, and equally happy on pads, posts and pins. At ø0.5 mm this is the small-head version, sized for tight test pads; the 204 \/ 115 variant offers a wider 1.15 mm crown where the target allows. Fitted with the 1.0 N spring, a moderate force that keeps total probe-field load manageable in a dense 75 mil (1.91 mm) fixture.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e14 4-point crown, self-cleaning tip, ø0.5 mm (.019 in), steel, gold-plated\u003c\/li\u003e\n\u003cli\u003e1.91 mm (75 mil) grid, barrel diameter 1.02 mm (.04 in), collar height 00\u003c\/li\u003e\n\u003cli\u003eTotal length 33.1 mm (1.3 in)\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm (.169 in), maximum stroke 6.35 mm (.25 in)\u003c\/li\u003e\n\u003cli\u003eSpring force 1 N (3.59 ozf) at working stroke; pre-load 0.4 N\u003c\/li\u003e\n\u003cli\u003e3 A rated current, typical resistance 20 mΩ\u003c\/li\u003e\n\u003cli\u003eContacts pads, posts and pins; plug-in mounting in KS-075, quick-exchange\u003c\/li\u003e\n\u003cli\u003eOperating range −40 °C to +80 °C; RoHS-compliant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144978972774,"sku":"201-0019-00","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/2e3680de224e892b5856ce5035860c9b.png?v=1788927465"},{"product_id":"ingun-gks-075-319-120-a-1000-19-inverse-cone-slotted-self-cleaning","title":"Ingun GKS-075 319 120 A 1000, Cupped Tip, 75mil","description":"\u003cp\u003eThe INGUN GKS-075 319 120 A 1000 (INGUN item GKS-075-0722) is a standard-stroke test probe on the 1.91 mm (75 mil) grid, plugging into a KS-075 receptacle with quick exchange.\u003c\/p\u003e\n\u003cp\u003eThe 19 tip is a 90° inverse cone, slotted and self-cleaning. Like the plain 03 inverse cone it is shaped to receive a round lead rather than press on a flat pad — the funnel captures and centres a post or pin — but the slots turn the cone's inner wall into cutting edges, so it also scrapes through oxide and flux as the probe compresses, and gives the displaced debris somewhere to go. That makes it the inverse-cone variant to specify for solder-tinned or oxidised through-hole leads, where the smooth 03 cone would make a high-resistance joint. At ø1.2 mm with a 1.0 N spring it fits common header and through-hole lead sizes.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e19 90° inverse cone, slotted, self-cleaning tip, ø1.2 mm (.047 in), CuBe, gold-plated\u003c\/li\u003e\n\u003cli\u003e1.91 mm (75 mil) grid, barrel diameter 1.02 mm (.04 in), collar height 00\u003c\/li\u003e\n\u003cli\u003eTotal length 33.1 mm (1.3 in)\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm (.169 in), maximum stroke 6.35 mm (.25 in)\u003c\/li\u003e\n\u003cli\u003eSpring force 1 N (3.59 ozf) at working stroke; pre-load 0.4 N\u003c\/li\u003e\n\u003cli\u003e3 A rated current, typical resistance 20 mΩ\u003c\/li\u003e\n\u003cli\u003eContacts posts and pins; plug-in mounting in KS-075, quick-exchange\u003c\/li\u003e\n\u003cli\u003eOperating range −40 °C to +80 °C; RoHS-compliant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144979333222,"sku":"201-0021-00","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/1ffc9f84b4ab428d824ee2b854d476fd.png?v=1788927470"},{"product_id":"ingun-gks-050-201-050-a-1000","title":"Ingun GKS-050 201 050 A 1000, Needle Tip, 50mil","description":"\u003cp\u003eThe INGUN GKS-050 201 050 A 1000 (INGUN item GKS-050-0095) is a standard-stroke test probe on the 1.27 mm (50 mil) grid — INGUN's fine-pitch plug-in family, for boards whose test points are too dense for 75 mil (1.91 mm) centres. It mounts in a KS-050 receptacle and supports quick exchange.\u003c\/p\u003e\n\u003cp\u003eThe 01 tip is a self-cleaning 30° needle at ø0.5 mm, the sharpest geometry offered. At this pitch the targets are small — fine-pitch pads, escape vias, tight lands — and a crown head would simply overhang them, so the needle is the natural choice: it lands precisely and puts the full spring force on one point. It is rated for pad contact only, and it will mark the target. The 1.0 N spring keeps per-probe force sensible in a dense field; note the family's 2 A current rating and the slender 0.78 mm barrel, which is less tolerant of side load than the coarser series.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e01 30° needle tip, self-cleaning, ø0.5 mm (.019 in), steel, gold-plated\u003c\/li\u003e\n\u003cli\u003e1.27 mm (50 mil) grid, barrel diameter 0.78 mm (.03 in), collar height 00\u003c\/li\u003e\n\u003cli\u003eTotal length 43.2 mm (1.7 in)\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm (.169 in), maximum stroke 6.35 mm (.25 in)\u003c\/li\u003e\n\u003cli\u003eSpring force 1 N (3.59 ozf) at working stroke; pre-load 0.44 N\u003c\/li\u003e\n\u003cli\u003e2 A rated current, typical resistance 20 mΩ\u003c\/li\u003e\n\u003cli\u003eContacts pads; plug-in mounting in KS-050, quick-exchange\u003c\/li\u003e\n\u003cli\u003eOperating range −40 °C to +80 °C; RoHS-compliant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144979660902,"sku":"201-0025-00","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/1f43086d16747676275ecff2d8776041.png?v=1788927475"},{"product_id":"ingun-gks-050-201-050-a-1500-probe","title":"Ingun GKS-050 201 050 A 1500 Probe, Needle Tip, 50mil","description":"\u003cp\u003eThe INGUN GKS-050 201 050 A 1500 (INGUN item GKS-050-0252) is a fine-pitch spring-loaded test probe for the 1.27 mm (50 mil) grid, seated in a KS-050 receptacle so probes can be replaced from the top of the fixture.\u003c\/p\u003e\n\u003cp\u003eTip style 01 is a 30° needle point, self-cleaning — the sharpest geometry INGUN offers — and at 0.5 mm it is also the smallest tip made. That pairing is the whole point of this part: it reaches test targets on a 50 mil (1.27 mm) grid that nothing blunter will fit, and the fine point pierces surface film and self-centres in a small pad rather than skating off it. The GKS-050 body is long at 43.2 mm, which buys the full 4.3 mm working stroke despite the slim 0.78 mm barrel. The 1.5 N spring gives the needle enough force to break through light oxide; expect a visible witness mark on soft plating.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTip style 01, 30° needle tip, self-cleaning; tip diameter 0.5 mm (0.019 in)\u003c\/li\u003e\n\u003cli\u003eBarrel diameter 0.78 mm (0.03 in), total length 43.2 mm (1.7 in)\u003c\/li\u003e\n\u003cli\u003eGrid pitch 1.27 mm (50 mil)\u003c\/li\u003e\n\u003cli\u003eSpring force 1.5 N at working stroke, pre-load 0.58 N\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm, maximum stroke 6.35 mm\u003c\/li\u003e\n\u003cli\u003eCurrent rating 2 A, contact resistance 20 mΩ typical\u003c\/li\u003e\n\u003cli\u003eSteel plunger, gold-plated\u003c\/li\u003e\n\u003cli\u003eContacts pads; receptacle KS-050. Operating range −40 °C to 80 °C\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144979988582,"sku":"201-0025-01","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/1f43086d16747676275ecff2d8776041_cd88e2ab-2107-41eb-b2c3-af2e5563f085.png?v=1788927478"},{"product_id":"generic-ph-4h-high-current-probe","title":"Generic PH-4H High Current Probe, Crown Tip","description":"\u003cp\u003eA PH-4 series high-current test probe. High-current probes exist because an ordinary ICT probe is a poor conductor: a thin plunger, a spring in the current path and a small contact footprint together add tens of milliohms and heat up under load. A PH-4 probe uses a heavier barrel and a broader contact to carry supply-level current into the DUT — power rails, charger and battery contacts, motor drives and load test — without the voltage drop and temperature rise that a signal probe would suffer.\u003c\/p\u003e\n\u003cp\u003eIn a fixture these are normally deployed sparingly: a handful of high-current contacts on the power nets alongside a field of ordinary probes on the signal nets. Because they are coarser and stiffer than a signal probe, allow for their larger keep-out and their higher individual spring force when laying out the probe plate.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePH-4 series high-current spring probe, H tip variant\u003c\/li\u003e\n\u003cli\u003eSold per unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDetailed stroke, spring force, current rating and tip dimensions are not recorded against this part number. Confirm them with FixturFab before designing this part into a fixture.\u003c\/p\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144980349030,"sku":"201-0026-00","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/6ae6a051cc5c37b2127bac0535b4388f.png?v=1788927482"},{"product_id":"generic-ph-4b-high-current-probes","title":"Generic PH-4B High Current Probes, Needle Tip","description":"\u003cp\u003eA PH-4 series high-current test probe with a B tip. High-current probes are used where a fixture has to deliver real power to the DUT rather than measure a signal: supply rails, battery and charger contacts, motor drives and load test. A standard ICT probe is the wrong tool for that job — its thin plunger, spring-in-path construction and small contact footprint add tens of milliohms and heat up under load — so a heavier barrel and a broader contact are used instead.\u003c\/p\u003e\n\u003cp\u003eIt is the sibling of the PH-4H: same series and construction, different tip form. In practice a fixture uses a small number of these on the power nets alongside a field of ordinary probes on the signal nets. Allow for their larger keep-out and higher individual spring force when laying out the probe plate, and keep the power path short — the probe is only one part of the total resistance between supply and DUT.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePH-4 series high-current spring probe, B tip variant\u003c\/li\u003e\n\u003cli\u003eSold per unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDetailed stroke, spring force, current rating and tip dimensions are not recorded against this part number. Confirm them with FixturFab before designing this part into a fixture.\u003c\/p\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144980676710,"sku":"201-0028-00","price":2.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/0a45b4965e48a8f7c9af8bd0570f122f.png?v=1788927488"},{"product_id":"generic-ph-5b-probe","title":"Generic PH-5B Probe, Needle Tip, 165mil","description":"\u003cp\u003eThe PH-5B is a large-bodied, high-current spring-loaded test probe used where a standard signal probe cannot carry the load — power rails, battery and charger contacts, motor drives and any node that must be forced with amps rather than milliamps during functional test.\u003c\/p\u003e\n\u003cp\u003eEverything about it is scaled up from a signal probe: a 2.5 mm spear tip, a 10 A rating, a 200 g spring, and a 10 mm working stroke that lets one probe span a deep or uneven target such as a connector shell or a heavy terminal. That travel also makes it useful as the first point of contact in a stack-up where the power connections must mate before the signal field lands. In exchange it is a physically large part: plan on 4.2 mm (165 mil) between probe centres and a 3.3 mm mounting hole, and treat it as a dedicated power probe rather than something to sprinkle through a signal grid.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSpear tip, high-current construction\u003c\/li\u003e\n\u003cli\u003eProbe diameter 2.5 mm, tip diameter 2.5 mm\u003c\/li\u003e\n\u003cli\u003eWorking stroke 10 mm, full stroke 10.5 mm\u003c\/li\u003e\n\u003cli\u003eSpring force 200 g at working stroke\u003c\/li\u003e\n\u003cli\u003eCurrent rating 10 A\u003c\/li\u003e\n\u003cli\u003eMinimum centre distance 4.2 mm (165 mil)\u003c\/li\u003e\n\u003cli\u003eMounting hole diameter 3.3 mm (press-fit 3.3 mm); collar height 3 mm\u003c\/li\u003e\n\u003cli\u003eMoving-plate hole diameter 3.5 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144980775014,"sku":"201-0029-00","price":2.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/66e5f9b98e8333bb666d543d2072633c.png?v=1788927491"},{"product_id":"ingun-gks-100-319-180-a-1000-probe","title":"Ingun GKS-100 319 180 A 1000 Probe, Cupped Tip, 100mil","description":"\u003cp\u003eThe INGUN GKS-100 319 180 A 1000 (INGUN item GKS-100-1151) is a standard-stroke test probe on the 2.54 mm (100 mil) grid, plugging into a KS-100 receptacle with quick exchange.\u003c\/p\u003e\n\u003cp\u003eThe 19 tip is a 90° inverse cone, slotted and self-cleaning: a funnel-shaped head that captures the end of a round lead and centres it, with slots that turn the cone wall into cutting edges so oxide and flux are scraped away rather than trapped. It is the tip to specify for through-hole leads, header pins and connector posts — especially tinned ones — where a flat or chisel tip would slip off the top of the lead. At ø1.8 mm this is the largest head in the GKS-100 range, sized to swallow the fatter lead diameters. Fitted here with the 1.0 N spring, the lighter of the two common forces for this geometry (the 1500 variant gives 1.5 N).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e19 90° inverse cone, slotted, self-cleaning tip, ø1.8 mm (.07 in), CuBe, gold-plated\u003c\/li\u003e\n\u003cli\u003e2.54 mm (100 mil) grid, barrel diameter 1.37 mm (.053 in), collar height 00\u003c\/li\u003e\n\u003cli\u003eTotal length 33.4 mm (1.31 in)\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm (.169 in), maximum stroke 6.35 mm (.25 in)\u003c\/li\u003e\n\u003cli\u003eSpring force 1 N (3.59 ozf) at working stroke; pre-load 0.35 N\u003c\/li\u003e\n\u003cli\u003e5 A rated current, typical resistance 20 mΩ\u003c\/li\u003e\n\u003cli\u003eContacts posts and pins; plug-in mounting in KS-100, quick-exchange\u003c\/li\u003e\n\u003cli\u003eOperating range −40 °C to +80 °C; RoHS-compliant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144980840550,"sku":"201-0031-00","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/641ee0058de7dceff3786423ad61ea41.png?v=1788927494"},{"product_id":"ingun-gks-002-303-191-a-1800-03-inverse-cone","title":"Ingun GKS-002 303 191 A 1800, Cupped Tip, 100mil","description":"\u003cp\u003eThe INGUN GKS-002 303 191 A 1800 (INGUN item GKS-002-0009) is a short-body spring-loaded test probe on the 2.54 mm (100 mil) grid, seated in a KS-002 receptacle.\u003c\/p\u003e\n\u003cp\u003eWhat sets the GKS-002 apart from the mainstream GKS-100 line is length and travel: 24.6 mm overall against 33.4 mm, and a 2.7 mm working stroke against 4.3 mm. That makes it the probe for a shallow fixture stack-up where there is simply no room for a full-length probe, at the cost of less travel to absorb board warp — so it wants a well-supported, flat DUT. Tip style 03 is an inverse cone: a concave face that seats over a rounded target such as a solder bump, a wire end or a trimmed through-hole lead, capturing it rather than sliding off. At 1.91 mm this is a large cone, matched to substantial targets. The CuBe plunger carries 8 A, well above the 5 A of a standard 100 mil (2.54 mm) probe, which makes it useful on power nodes as well as signals.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTip style 03, inverse cone; tip diameter 1.91 mm (0.075 in)\u003c\/li\u003e\n\u003cli\u003eBarrel diameter 1.37 mm (0.053 in), total length 24.6 mm (0.968 in)\u003c\/li\u003e\n\u003cli\u003eGrid pitch 2.54 mm (100 mil)\u003c\/li\u003e\n\u003cli\u003eSpring force 1.8 N at working stroke, pre-load 1.08 N\u003c\/li\u003e\n\u003cli\u003eWorking stroke 2.7 mm, maximum stroke 4.1 mm\u003c\/li\u003e\n\u003cli\u003eCurrent rating 8 A, contact resistance 20 mΩ typical\u003c\/li\u003e\n\u003cli\u003eCuBe plunger, gold-plated\u003c\/li\u003e\n\u003cli\u003eReceptacle: KS-002\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144980938854,"sku":"201-0032-00","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/9ae2d6d10f8163a885750f040791513e.png?v=1788927497"},{"product_id":"qa-tech-125-prg2541s-23a-high-current-probe","title":"QA Tech 125-PRG2541S, 23A High Current Probe, Needle Tip, 125mil","description":"\u003cp\u003eThe QA Technology 125-PRG2541S is a conventional spring probe from the 125-25 series — 125 mil (3.18 mm) centres, 0.250 in (6.35 mm) full stroke, 0.167 in (4.24 mm) working stroke — a range QA Technology built for loaded-board and high-current testing. It mounts in a 125-SD series socket so probes can be pulled and replaced from the top of the plate.\u003c\/p\u003e\n\u003cp\u003eIt is the spear-tipped sibling of the serrated 125-PRG2509S: the 41 tip is a 30° spear at ø0.059 in (1.50 mm), roughly half the diameter of the 09 serrated head. That makes it the one to choose when the target is a small pad or land that the wide serrated face would overhang, or when you need the concentrated point pressure of a spear to punch through flux on a small joint. Everything else matches: the G tube (nickel silver, OD gold plated, \u0026lt; 15 mΩ, 16.9 A at 120 °C and 23.0 A at 204 °C) and the standard S spring at 7.0 oz (198 g) at working stroke, rated for one million cycles.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e41 spear tip, 30°, ø0.059 in (1.50 mm); heat-treated BeCu, gold over nickel\u003c\/li\u003e\n\u003cli\u003e125 mil (3.18 mm) centres\u003c\/li\u003e\n\u003cli\u003eWorking stroke 0.167 in (4.24 mm), full stroke 0.250 in (6.35 mm)\u003c\/li\u003e\n\u003cli\u003eStandard (S) spring: 7.0 oz (198 g \/ 1.95 N) at working stroke, 2.2 oz pre-load\u003c\/li\u003e\n\u003cli\u003eStainless-steel spring, 1,000,000 cycle life at working stroke\u003c\/li\u003e\n\u003cli\u003eG tube: nickel silver, OD gold plated; average resistance \u0026lt; 15 mΩ\u003c\/li\u003e\n\u003cli\u003e16.9 A at 120 °C (23.0 A at 204 °C)\u003c\/li\u003e\n\u003cli\u003eWorking temperature −45 °C to 120 °C lubricated; to 204 °C unlubricated\u003c\/li\u003e\n\u003cli\u003eSold per unit; requires a 125-SD 250 series socket\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144981037158,"sku":"201-0034-00","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/b4e1e3eec3be2f29c0e2e78b3fe88f98.png?v=1788927499"},{"product_id":"ingun-gks-050-305-050-a-1500-probe","title":"Ingun GKS-050 305 050 A 1500 Probe, Radius Tip, 50mil","description":"\u003cp\u003eThe INGUN GKS-050 305 050 A 1500 (INGUN item GKS-050-0005) is a fine-pitch spring-loaded test probe for the 1.27 mm (50 mil) grid, seated in a KS-050 receptacle.\u003c\/p\u003e\n\u003cp\u003eTip style 05 is bullet-nosed with a full radius — a smooth dome that makes contact without cutting, so it leaves gold-plated pads, connector contacts and finished surfaces unmarked. At 0.5 mm this is the smallest bullet nose in the range and one of the few non-marking tips that will fit a 50 mil (1.27 mm) grid at all, which is precisely the case it exists for: dense, delicate targets that must come through test cosmetically intact. Because a blunt tip cannot cut through surface film, it needs a clean target; the 1.5 N spring is the heavier of the two common forces and helps it seat through light contamination.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTip style 05, bullet-nosed (full radius); tip diameter 0.5 mm (0.019 in)\u003c\/li\u003e\n\u003cli\u003eBarrel diameter 0.78 mm (0.03 in), total length 43.2 mm (1.7 in)\u003c\/li\u003e\n\u003cli\u003eGrid pitch 1.27 mm (50 mil)\u003c\/li\u003e\n\u003cli\u003eSpring force 1.5 N at working stroke, pre-load 0.58 N\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm, maximum stroke 6.35 mm\u003c\/li\u003e\n\u003cli\u003eCurrent rating 3 A, contact resistance 20 mΩ typical\u003c\/li\u003e\n\u003cli\u003eCuBe plunger, gold-plated\u003c\/li\u003e\n\u003cli\u003eReceptacle: KS-050\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144981659750,"sku":"201-0040-00","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/081fa00db5dbac79621c3a26a21236d3.png?v=1788927513"},{"product_id":"ingun-gks-100-319-180-a-1500-probe","title":"Ingun GKS-100 319 180 A 1500 Probe, Cupped Tip, 100mil","description":"\u003cp\u003eThe INGUN GKS-100 319 180 A 1500 (INGUN item GKS-100-1070) is a standard-stroke test probe on the 2.54 mm (100 mil) grid, plugging into a KS-100 receptacle with quick exchange.\u003c\/p\u003e\n\u003cp\u003eThe 19 tip is a 90° inverse cone, slotted and self-cleaning — a funnel that captures and centres the end of a round lead, with slots that cut oxide and flux off the lead as the probe compresses and clear the debris. It is the tip for through-hole leads, header pins and connector posts, especially tinned ones, where a flat or chisel head would skid off the top. At ø1.8 mm it is the widest head in the GKS-100 line, sized for the larger lead diameters. This is the 1.5 N version of the same geometry as the 1000-spring GKS-100 319 180 A 1000: choose it when the lead is oxidised enough to need the extra bite.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e19 90° inverse cone, slotted, self-cleaning tip, ø1.8 mm (.07 in), CuBe, gold-plated\u003c\/li\u003e\n\u003cli\u003e2.54 mm (100 mil) grid, barrel diameter 1.37 mm (.053 in), collar height 00\u003c\/li\u003e\n\u003cli\u003eTotal length 33.4 mm (1.31 in)\u003c\/li\u003e\n\u003cli\u003eWorking stroke 4.3 mm (.169 in), maximum stroke 6.35 mm (.25 in)\u003c\/li\u003e\n\u003cli\u003eSpring force 1.5 N (5.39 ozf) at working stroke; pre-load 0.49 N\u003c\/li\u003e\n\u003cli\u003e5 A rated current, typical resistance 20 mΩ\u003c\/li\u003e\n\u003cli\u003eContacts posts and pins; plug-in mounting in KS-100, quick-exchange\u003c\/li\u003e\n\u003cli\u003eOperating range −40 °C to +80 °C; RoHS-compliant\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FixturFab","offers":[{"title":"Default Title","offer_id":47144982610022,"sku":"201-0041-00","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/files\/fa4a2ea96891a814ef051305c2b1b33b.png?v=1788927516"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0653\/5387\/5558\/collections\/image_1920_512a5965-4c2d-4352-8ca8-dc52e2f15c09.png?v=1751902741","url":"https:\/\/shop.fixturfab.com\/collections\/probes.oembed?page=3","provider":"FixturFab Shop","version":"1.0","type":"link"}