Fishing – trapping – and vermin destroying
Patent
1991-05-10
1992-01-14
Hearn, Brian E.
Fishing, trapping, and vermin destroying
437215, 437216, 437217, 437218, 357 74, 357 80, 361381, H01L 2160
Patent
active
050810677
ABSTRACT:
A ceramic package type semiconductor device comprising: a ceramic substrate having a wiring pattern layer formed on a top surface thereof; at least one semiconductor element mounted on the ceramic substrate with a top face thereof facing downward and electrically connected to the wiring patttern layer; a metal cap having at least one through-hole corresponding to an external size of the semiconductor element and an end portion thereof soldered to the top surface of the ceramic substrate, so that a top surface of the metal cap and a bottom surface of the semiconductor element fitting into the through-hole form a flat plane: and a heatsink member comprising a plate portion which is soldered to the flat plane of the metal cap and the semiconductor element to complete a hermetic sealing of the semiconductor element.
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Harada Shigeki
Shimizu Nobutaka
Sugimoto Masahiro
Tsujimura Takehisa
Fujitsu Limited
Hearn Brian E.
Picardat Kevin M.
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