Metal working – Method of mechanical manufacture – Electrical device making
Patent
1990-09-27
1992-01-28
Arbes, Carl J.
Metal working
Method of mechanical manufacture
Electrical device making
29832, 165 803, 174 163, 361386, H05K 334
Patent
active
050833685
ABSTRACT:
Very compact, low cost power semiconductor device modules suitable for use in variable speed motor controllers multiple solenoid drivers, and the like are provided by attaching pre-packaged (e.g., type TO-220) semiconductor devices by their heat dissipation surfaces to opposed planar faces of a metal heat conduction plate using an electrically insulating and thermally conductive epoxy. By proper choice of the heat conduction plate thickness and the device-to-device spacing thereon, the leads of the pre-packaged devices can be arranged to have, on the modules, the same lead-to-lead and row-to-row spacing as for common JEDEC DILIC packages so that the modules fit on a conventional package footprint when mounted on a circuit board.
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Arbes Carl J.
Barbee Joe E.
Handy Robert M.
Motorola Inc.
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