Heat sink and transistor retaining assembly

Details Heat sink and transistor retaining assembly Heat sink and transistor retaining assembly

1994-02-17

1995-09-12

Thompson, Gregory D.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

257719, 257726, 361717, H05K 720

Patent

active

054502845

ABSTRACT:
A heat sink and transistor retaining assembly for installation onto a printed circuit board. The assembly has a thermally conductive base plate forming a heat sink adapted to be disposed adjacent to the board, a first electric insulator attached to the base plate, a plurality of transistors positioned at predetermined positions against the first electric insulator so as to be electrically insulated from the base plate, a second electric insulator adjacent to the transistors with the transistors sandwiched between the insulators, and a resilient clamp attached to the base plate with the electric insulators and transistors positioned therebetween. The clamp has a plurality of retaining fingers that exert a retaining force on the transistors between the first and second insulators to retain the transistors in predetermined positions relative to the board. The assembly is secured together as a unit after its several components have been positioned in a fixture that supports and retains the component in predetermined positions.

REFERENCES:
patent: 4288839 (1981-09-01), Prager et al.
patent: 4648008 (1987-03-01), Neyroud et al.
patent: 4803545 (1989-02-01), Birkle
patent: 4899255 (1990-02-01), Case et al.
patent: 5225965 (1993-07-01), Bailey et al.
patent: 5327324 (1994-07-01), Roth

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