Method of manufacturing a resistor

Details Method of manufacturing a resistor Method of manufacturing a resistor

2005-05-17

2005-05-17

Arbes, Carl J. (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S612000, C029S620000, C029S621000, C219S121690, C338S195000, C338S314000

Reexamination Certificate

active

06892443

ABSTRACT:
A high precision power resistor having the improved property of reduced resistance change due to power is disclosed. The resistor includes a substrate having first and second flat surfaces and having a shape and a composition; a resistive foil having a low TCR of about 0.1 to about 1 ppm/° C. and a thickness of about 0.03 mils to about 0.7 mils cemented to one of the flat surfaces with a cement, the resistive foil having a pattern to produce a desired resistance value, the substrate having a modulus of elasticity of about 10×106psi to about 100×106psi and a thickness of about 0.5 mils to about 200 mils, the resistive foil, pattern, type and thickness of cement, and substrate being selected to provide a cumulative effect of reduction of resistance change due to power. The present invention also provides for a method of producing a high precision power resistor.

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New Z-Based Foil Technology Enhances Resistor Performance, Featured Technical Paper, Jul./Aug. 2002, Reaven Goldstein and Joseph Szwarc.

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