Patent ID: 9431148
Filing Date: 2016-08-30
CPC Classification: C03C,H01B,H01C,H05B

Claim Text:
1. A thick film resistor paste composition comprising a resistor composition dispersed in an organic vehicle, said resistor composition comprising: (a) 3 to 60% by weight RuO (b) 5 to 75% by weight Ag conductive material, (c) 15 to 60% by weight glass, wherein the glass comprises by weight 25-45 wt % SiO (d) 0 to 10% by weight copper oxide or precursor thereof, and (e) 0 to 20% by weight bismuth oxide or precursor thereof wherein said resistor composition when printed to a dry thickness of 25.4 microns using a mesh of 200 to 350 and fired at a temperature between 750° C. and 950° C. achieves a sheet resistivity between 10 and 10,000 milliohms/square, a hot temperature coefficient of resistivity of 1000 ppm/C or higher and a resistance thickness ratio (R