Patent ID: 8294063

Claim:
A contact for a connector comprising: a terminal portion provided in the vicinity of an end and a contacting portion provided in the vicinity of the other end of the contact, which are formed by processing a metal material into a predetermined shape; a foundation nickel plating layer and a gold plating layer or a metal alloy plating layer including gold, which are formed on substantially entire surface of the contact including the terminal portion and the contacting portion; and a diffusion preventing area formed between the terminal portion and the contacting portion by irradiating laser beams on the gold plating layer or the metal alloy plating layer including gold, which has low wetting property with respect to solder so that melted solder rarely diffuses thereon, wherein the diffusion preventing area has the foundation nickel plating layer unsheathed owing to evaporation and removing of at least a part of gold or metal alloy including gold, and at least one selected among a metal alloy layer formed of alloying gold and nickel, a diffusion layer formed of diffusing a material except gold of the metal alloy including gold, and a metal alloy layer which is formed of evaporation and removing at least a part of gold and alloying remained gold and nickel.