Conductive substrate for use in printed circuit boards, comprises copper layer formed on at least one side of base board, and gold-copper layer formed on copper layer

摘要

A conductive substrate (51) comprises a base board, a copper layer formed on at least one side of the base board, and a gold-copper layer formed on the copper layer. The copper layer is made of copper or copper alloy. The gold-copper layer is made of an alloy of gold and copper. Independent claims are included for: (1) a motor, e.g. vibration motor, comprising a conductive substrate and a brush for forming a current path; and (2) a metal terminal for electrical contact, comprising a copper layer and a gold-copper layer formed on the copper layer.