Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Patent
1990-02-09
1991-10-08
Hille, Rolf
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
357 74, 361381, 361389, H01L 2302, H01L 2312
Patent
active
050559141
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 pattern 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.
REFERENCES:
patent: 4698663 (1987-10-01), Sugimoto et al.
patent: 4742024 (1988-05-01), Sugimoto et al.
patent: 4855869 (1989-08-01), Tsuji
patent: 4873615 (1989-10-01), Grabbe
Harada Shigeki
Shimizu Nobutaka
Sugimoto Masahiro
Tsujimura Takehisa
Fujitsu Limited
Hille Rolf
Ostrowski David
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