Patent ID: 8801914
Filing Date: 2014-08-12
Classification: C23C,C25D,H05K

Abstract:
1. A method for making a printed wiring member including wire-bondable contact pads and wear-resistant connector pads, the method comprising: a) providing a blank printed wiring member comprising a copper foil laminated to a dielectric substrate; b) masking the blank printed wiring member to protect regions of the copper foil; c) removing copper in unprotected regions of the blank printed wiring member to form a patterned printed wiring member including contact pads and connector pads; d) depositing a nickel coating on the patterned printed wiring member; e) electrolytically depositing a hard gold layer on the nickel coating; and f) electrolessly plating palladium on a surface of the hard gold layer to improve bondability of the contact pads while preserving wear resistance of the connector pads.