Patent ID: 9373925
Filing Date: 2016-06-21
CPC Classification: B32B,C23C,C25D,H01R,Y10T

Claim Text:
1. A method for producing a mating-type connecting part, the method comprising: stamping a copper sheet into a predetermined shape, pressing a surface of the copper sheet with a die which has a plurality of parallel lines of projections formed on a pressing surface of the die, thereby transferring the projections to the surface of the copper sheet and forming depressions as the plurality of parallel lines during, before, or after the stamping, plating the surface of the depressions-made copper sheet with at least tin to form a Sn coating layer, and reflowing the at least tin after the plating such that a surface of the Sn coating layer is smoothed and line-shaped Sn coating layers are each formed and exposed in each of the depressions of the copper sheet, and that a Cu—Sn alloy coating layer is formed and exposed adjacent to each side of each line-shaped Sn coating layer, wherein a maximum height roughness Rz of a surface of the mating-type connecting part on which the line-shaped Sn coating layers and the Cu—Sn alloy coating layer are formed is 10 μm or less in a direction of part insertion.