Patent ID: 6521358
Filing Date: 2003-02-18
Classification: C23C,C25D,H01L,Y10S,Y10T

Abstract:
A lead frame for a semiconductor device, which lead frame has a good solderability, said lead frame consisting of:a sheet body consisting of a 42%Niâ€”Fe alloy, and a Pd coating provided on said sheet body, said Pd coating containing Ni, the Ni being present in an amount of not more than 2%, said coating being formed by the steps of preparing a Pd plating bath, and forming said Pd coating by plating said sheet body by use of said Pd plating bath while limiting a Ni concentration in said Pd plating bath to be not more than a predetermined value such that the amount of Ni contained in the plated Pd coating is not more than 2%.