Plastic molded semiconductor device having waterproof cap

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United States of America Patent

PATENT NO 5223739
SERIAL NO

07581700

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Abstract

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A plastic molded semiconductor device having a semiconductor chip mounted on a die pad supported by hanging pins. The semiconductor chip is encapsulated by mold plastic where the semiconductor chip has a lead portion protruding to a side, and in which practically the entire periphery of the semiconductor chip is covered by aluminum or some other moistureproof material that stops the entry of moisture.

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Patent Owner(s)

Patent OwnerAddress
KABUSHIKI KAISHA TOSHIBATOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujieda, Shinetsu Kawasaki, JP 46 696
Hirata, Seiichi Yokosuka, JP 9 166
Katsumata, Akio Yokohama, JP 27 487
Shimozawa, Hiroshi Yokohama, JP 7 124

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