Post-termination apparatus and process for thick film resistors

Details Post-termination apparatus and process for thick film resistors Post-termination apparatus and process for thick film resistors

1991-07-01

1992-11-17

Lateef, Marvin M.

Electrical resistors

With base extending along resistance element

Resistance element and/or terminals printed or marked on base

338309, 338314, 338327, 427 96, H01C 1012, H01C 1142

Patent

active

051646986

ABSTRACT:
A printed circuit board includes both high and low resistive value thick film resistors interconnected by a copper film. To lower the contact resistance to the thick film resistors of high value, each is provided at its ends with a termination of a composition similar to that used for the low value resistors. This provides a relatively low resistance contact region which overcomes the difficulty that a copper thick film conductor has in making electrical connections to compositions generally used for making high value thick film resistors. The composition of high and low resistivities are adapted to permit firing of both compositions in a single firing step.

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Encyclopedia of Electronics, 2nd Edition, Stan Gibilisco and Neil Sclater, Co-Editors-in-Chief, p. 467 (Insulator) and p. 722 (Resistor).
Solid State Technology vol. 24, No. 1 Washington US pp. 73-79; Stein et al.; :Basic Metal Thick Film Conductors.

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