Patent ID: 8092263
Filing Date: 2012-01-10
Classification: C23C,C25D,H01L,H01R

Abstract:
1. A process for producing a connector comprising a step of providing a substrate layer on a surface of a material of terminals to surface treat the material and a step of providing a tin-containing material layer on an upside of the substrate layer to surface treat the substrate layer, wherein a step of providing a barrier intermediate layer for preventing component atoms constituting the material and the substrate layer from diffusing into the tin-containing material layer and suppressing an occurrence of external force-type whiskers upon an application of an external force to a surface of the tin-containing material layer is further comprised before the providing of the tin-containing material layer, and the barrier intermediate layer is a surface treatment layer containing gold-containing material and/or palladium and has a deposited amount of surface treatment of not less than 0.01 mg/cm 2 , wherein an intermetallic compound layer of tin and gold is formed in at least an interfacial portion of the tin-containing material layer when a gold-containing material or a gold-containing material strike is plated.