Ingun GKS-040 305 040 A 0800 Test Probe, Radius Tip, 40mil

The 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.

Everything 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.

• 05 bullet-nosed (full radius) tip, ø0.4 mm (.015 in), CuBe, gold-plated
• 1 mm (39.3 mil) grid, barrel diameter 0.61 mm (.024 in), collar height 00
• Total length 35.9 mm (1.41 in)
• Working stroke 4.3 mm (.169 in), maximum stroke 6.35 mm (.25 in)
• Spring force 0.8 N (2.87 ozf) at working stroke; pre-load 0.15 N
• 2 A rated current, typical resistance 20 mΩ
• Contacts pads and female connectors; plug-in mounting in KS-040, quick-exchange
• Operating range −40 °C to +80 °C; RoHS-compliant