How is long-term contact reliability guaranteed?

Terminals are phosphor bronze plated with at least 0.025µm of gold over a nickel barrier. That combination holds contact resistance at 30mΩ or less through a 10,000-cycle rating — twice the national requirement — and keeps it stable across -45°C to 80°C.

Terminal coplanarity is held at ±0.05mm against a ±0.10mm national standard, with full-area solder plane flatness of 0.05mm max, which is what protects first-pass yield on a thin board. Insertion and extraction force is specified as a 3 to 25N window rather than a single value.