High-power RF device with heat spreader bushing

Details High-power RF device with heat spreader bushing High-power RF device with heat spreader bushing

1991-12-23

1994-03-01

Hille, Rolf

Active solid-state devices (e.g., transistors, solid-state diode

Housing or package

With provision for cooling the housing or its contents

257718, 257732, 165 803, 16510433, 174 525, 361707, 361714, 361760, H01L 2302, H01L 2312

Patent

active

052910636

ABSTRACT:
A high-power RF feedback resistor assembly includes a flat film resistor or other flat device mounted in thermal communication onto a bushing which is, in turn, mounted directly onto a cooling flange of an associated power transistor. A bushing has a vertical bolt hole through it to receive a threaded screw. The bushing can have a cutout beneath the flat vertical surface on which the resistor is mounted to provide clearance for a printed circuit board.

REFERENCES:
patent: 4517585 (1985-05-01), Ridout et al.
patent: 4990987 (1991-02-01), Boucher et al.

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