Patent ID: 8956735
Filing Date: 2015-02-17
Classification: B32B,C23C,C25D,H01R,Y10T

Abstract:
1. A mating-type connecting part, comprising, on an outermost surface thereof on a side that is contact with a mating part, a mixture of a Cu-Sn alloy coating layer and a Sn coating layer, the Sn coating layer being smoothed by reflowing, wherein the Sn coating layer comprises a Sn coating layer group as a plurality of continuous parallel lines; the Cu-Sn alloy coating layer is adjacent to each side of each of Sn coating layers constituting the Sn coating layer group; a maximum height roughness Rz is 10 μm or less in the direction of part insertion; the connecting part is obtained by a process comprising post-plating and reflowing a copper sheet stamped into a predetermined shape; and wherein, in the Sn coating layer group as a plurality of continuous parallel lines, the lines satisfy either or both of conditions (A)-(B): (A) the lines have substantially constant width and are spaced at substantially regular intervals, and/or (B) the lines have substantially constant width over a continuous length thereof.