Patent ID: 6818839
Filing Date: 2004-11-16
Classification: H01R,H05K

Abstract:
An electric contact using resin solder, which is connected to a first printed circuit board, which has a first conductor being provided on a first surface or in a first intermediate layer of the first printed circuit board and a first through hole or a first concaved part, which penetrates the first conductor,the electric contact comprising a first protruding part, which is inserted into the first through hole or the first concaved part of the first printed circuit board, and a connecting part, which is connected to a second conductor of a counterpart member, and at least a part of the first protruding part, which connects to the first conductor of the first printed circuit board, is made of a lead-free ultrahigh-conductive plastic being a conductive resin composite, comprising a thermoplastic resin, a lead-free solder that can be melted in the plasticated thermoplastic resin, and powder of a metal that assists fine dispersion of the lead-free solder in the thermoplastic resin or a mixture of the powder of the metal and short fibers of a metal, wherein the counterpart member is a counterpart printed circuit board, which has a second conductor being provided on a second surface or in a second intermediate layer of the counterpart printed circuit board and a second through hole or a second concaved part, of which an inner wall contacts the second conductor, and the connecting part has a second protruding part, which is inserted into the second through hole or the second concaved part of the counterpart printed circuit board.