METHOD FOR PREVENTING TIN WHISKER BY ELETROLESS PLATING

摘要

A method for preventing tin whisker by eletroless plating is provided to prevent the generation of tin whisker conveniently without causing a pin hole on the tin coating in plating method forming the tin coating on the under layer. A method for preventing tin whisker by eletroless plating comprises a step of forming an under layer of electroless tin-silver alloy on a piece to be plated, and a step of forming electroless tin coating on the under layer. The thickness of the underlayer is 0.025~0.5mum, and the total thickness of the under layer and the coating is 0.1~6mum. The content of silver in the coating is 5~90 weight%.