Electrical resistor material, resistor made therefrom and method

Stock material or miscellaneous articles – Composite – Of quartz or glass

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252518, 252519, 252520, 338308, 427101, 4271262, 4271263, 4273762, 427377, 428427, 428428, 428697, 428701, 428702, B32B 1706, H01B 106

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active

043784097

ABSTRACT:
A vitreous enamel resistor material comprising a mixture of a vitreous glass frit and fine particles of tin oxide (SnO.sub.2). An electrical resistor is made from the resistor material by applying the material to a substrate and firing the coated substrate to a temperature at which the glass melts. The tin oxide is preferably heat treated prior to mixing with the glass frit. Upon cooling, the substrate has on the surface thereof, a film of the glass having the particles of the tin oxide embedded therein and dispersed therethroughout. The resistor material provides a resistor having a wide range of resistivity and a low temperature coefficient of resistance.

REFERENCES:
patent: 2564707 (1951-08-01), Mochel
patent: 2717946 (1955-09-01), Peck
patent: 3044901 (1962-07-01), Garnsworthy
patent: 3108019 (1963-10-01), Davis
patent: 3488767 (1970-06-01), Collins
patent: 3546015 (1970-12-01), Vulliez
patent: 3669907 (1972-06-01), Kohashi
patent: 3923698 (1975-12-01), Kamigaito
patent: 4061827 (1976-03-01), Gould
Burkett, R. H. W., "Tin Oxide Resistors," J. Brit I.R.E., Apr. 1961, pp. 301-304.
Dearden, J. "High Value, High Voltage Resistor," Electronic Components, Mar. 1967, pp. 259-263.

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