Haltbare Beschichtung für elektrische Steckkontakte

摘要

An electrical contact terminal has a two layer plated coating (14) thereon including a layer (18) of palladium having a macrostress in the range of 30,000 to 140,000 psi and a layer (20) of gold, the gold preferably having a Knoop hardness from 60 to 90. The coating (14), comprised of medium stress palladium and gold, substantially improves the durability of terminals (10) as compared with similar coatings using gold and low or high stress palladium.