Ingun GKS-050 201 050 A 1500 Probe, Needle Tip, 50mil

The 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.

Tip 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.

• Tip style 01, 30° needle tip, self-cleaning; tip diameter 0.5 mm (0.019 in)
• Barrel diameter 0.78 mm (0.03 in), total length 43.2 mm (1.7 in)
• Grid pitch 1.27 mm (50 mil)
• Spring force 1.5 N at working stroke, pre-load 0.58 N
• Working stroke 4.3 mm, maximum stroke 6.35 mm
• Current rating 2 A, contact resistance 20 mΩ typical
• Steel plunger, gold-plated
• Contacts pads; receptacle KS-050. Operating range −40 °C to 80 °C