Patent ID: 8426742
Filing Date: 2013-04-23
Classification: C23C,H01L,H05K

Abstract:
1. A connecting terminal comprising: (a) a conductive layer; (b) an electroless nickel plating film; (c) a first palladium plating film that is a displacement or electroless palladium plating film with a purity of 99% by mass or greater; (d) a second palladium plating film that is an electroless palladium plating film with a purity of at least 90% by mass and less than 99% by mass; and (e) a displacement gold plating film, wherein the electroless nickel plating film, the first palladium plating film, the second palladium plating film and the displacement gold plating film are laminated in that order on one side of the conductive layer, and the displacement gold plating film is situated on an uppermost surface layer on an opposite side of the conductive layer.