Electrical resistors – Resistance value temperature-compensated
Reexamination Certificate
2006-12-26
2006-12-26
Hoang, Tu (Department: 2832)
Electrical resistors
Resistance value temperature-compensated
C338S009000, C338S099000, C338S204000, C338S320000, C029S610100
Reexamination Certificate
active
07154370
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.
REFERENCES:
patent: 3405381 (1968-10-01), Zandman et al.
patent: 4318072 (1982-03-01), Zandman
patent: 4677413 (1987-06-01), Zandman et al.
patent: 4774491 (1988-09-01), Vugts
patent: 5039976 (1991-08-01), Drabkin
patent: 6194990 (2001-02-01), Lee et al.
patent: 6404323 (2002-06-01), Schrum et al.
patent: 6404324 (2002-06-01), Witt et al.
patent: 6873028 (2005-03-01), Belman
New Z-Based Foil Technology Enhances Resistor Performance, Featured Technical Paper, Jul./Aug. 2002, Reaven Goldstein and Joseph Szwarc.
Goldstein Reuven
Szwarc Joseph
Hoang Tu
McKee Voorhees & Sease, P.L.C.
Vishay Intertechnology Inc.
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