Film-type resistor assembly with full encapsulation except at th

Electrical resistors – Incased – embedded – or housed

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Details

338273, 338275, 257675, 257796, H01C 1034

Patent

active

052911780

ABSTRACT:
A film-type resistor having a high power rating and a relatively low manufacturing cost. The structural strength of the resistor is derived primarily from a molded body that covers both a film-coated substrate and a heatsink. The heatsink, to which the substrate is bonded in high thermal-conductivity relationship, has an exposed flat bottom surface of relatively large area.

REFERENCES:
patent: 3649944 (1972-03-01), Caddock
patent: 3722085 (1973-05-01), Caddock
patent: 4064477 (1977-12-01), Thompson
patent: 4339768 (1982-07-01), Keller et al.
patent: 4486945 (1984-12-01), Aigoo
patent: 4507675 (1985-03-01), Fujii et al.
patent: 4719443 (1988-01-01), Salay
patent: 4868637 (1989-09-01), Clements et al.
patent: 4950427 (1990-08-01), Endo
patent: 5052005 (1991-09-01), Tanaka et al.
P. 18 of Caddock Electronics, Inc. General Catalog 23rd Edition, 1989.
P. 17 of Caddock Electronics, Inc. General Catalog 23rd Edition, 1989.
Drawing dated Apr. 5, 1991, made by Caddock Electronics, Inc.
Motorola Catalog: 1989 Full Pak Power Semiconductors for Isolated Package Applications.
Pp. 6-18 and 1-134 of Motorola Catalog entitled Bipolar Power Transistor and Thyristor Data.
Data Sheet No. PD-2.068A from International Rectifier 1985 Product Guide and Specification Databook.

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