Metal working – Method of mechanical manufacture – Electrical device making
Patent
1992-07-20
1994-03-22
Arbes, Carl J.
Metal working
Method of mechanical manufacture
Electrical device making
206328, 206523, 206591, 361736, H01R 4300
Patent
active
052952975
ABSTRACT:
In surface packaging of thin resin packages such as resin molded memory ICs or the like, cracks of the package occur frequently at a solder reflow step where thermal impact is applied to the package because the resin has absorbed moisture before packaging.
To solve this problem, the devices are packaged moisture-tight at an assembly step of the resin molded devices where the resin is still dry, and are taken out from the bags immediately before the execution of surface packaging.
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Kitamura Wahei
Murakami Gen
Nishi Kunihiko
Arbes Carl J.
Hitachi , Ltd.
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