Electrical resistor material, resistor made therefrom and method

Details Electrical resistor material, resistor made therefrom and method Electrical resistor material, resistor made therefrom and method

1985-05-02

1987-03-17

Broome, Harold

Electrical resistors

With base extending along resistance element

Resistance element coated on base

338308, 252512, 252514, 252518, 29620, H01C 1012, H01C 1706, H01B 102

Patent

active

046511261

ABSTRACT:
An electrical resistor of resistivity of less than about 600 ohms per square and with a temperature coefficient of resistance within the range of .+-.200 ppm/.degree.C. comprises an insulating substrate, electrically conductive terminations on a surface of the substrate, and a layer of resistor material on the surface of the substrate and in contact with the terminations. The resistor material comprises from about 25 to about 35% by weight glass and from about 50% to about 75% by weight conductive particles. Preferably the conductive particles consisting essential of tin oxide and at least about 0.2% by weight of ruthenium containing material, expressed as RuO.sub.2. The mass ratio of ruthenium containing material (as RuO.sub.2) to tin oxide is less than 7:93.

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