Electric contact and socket for electrical part

摘要

A contact pin includes a base material composed of a material having a conductive property and an outermost surface layer made of a material into which Sn is dissolved and diffused by applying heat.

主权项

1. A socket for an electrical part, that is used for a burn-in test, comprising:
a socket body, comprising an accommodation portion in which an electric terminal of the electrical part is accommodated, the electric terminal comprising a film on a surface thereof, the film comprising Sn, the accommodation portion comprising an electric contact which contacts the electric terminal, the electric contact comprising: an intermediate layer comprising Ni, and an outermost surface layer, on the intermediate layer, the outermost surface layer comprising Pd and Ag, the outermost surface layer being formed directly on the intermediate layer, and a weight ratio of the Ag in the outermost surface layer being larger than a weight ratio of the Pd in the outermost surface layer.