The tin post is the standard choice for wave-solder or hand-solder assembly; the gold mating surface avoids the fretting corrosion that tin-on-tin interfaces develop under vibration in unsealed environments.
Sourcing and Lifecycle — Still Active, No Cross-Reference Needed
The 27-position count is less common than 26 or 28 in the AMPMODU Mod II family, so if your BOM calls for exactly 27 positions, this is the direct fit — not a substitution.
