Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2006-12-05
2009-02-17
Arbes, C. J (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S832000, C029S846000, C228S180100, C228S180210
Reexamination Certificate
active
07490403
ABSTRACT:
In a soldering method for soldering an electronic component including a palladium or palladium alloy layer formed on a surface of the electronic component and also including a soldering lead terminal onto a printed wiring board including a soldering land and plated through hole, a solder layer containing tin and zinc as main components is formed on the surfaces of the land through hole by a HAL treatment. The lead terminal is inserted and mounted in the through hole. The printed wiring board is brought into contact with jet flows of a solder containing tin and zinc as the main components to thereby supply a solder to the land and through hole.
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Imamura Keiichiro
Mizutani Tetsuharu
Sugiura Masahiro
Tanabe Kazuhiko
Tanaka Takashi
Arbes C. J
Foley & Lardner LLP
Maruya Seisakusbo Co., Ltd.
NEC Infrontia Corporation
NEC Toppan Circuit Solutions Toyoma, Inc.
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