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US 4,695,504 AGranted
Thick film resistor composition
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsHirotoshi Watanabe, Osamu Makino, Toru Ishida
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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsHirotoshi Watanabe, Osamu Makino, Toru Ishida
Estimating the term…
A thick film resistor composition, comprising a silicide powder composed of a molybdenum disilicide, a tantalum disilicide and a magnesium silicide, and an alkaline earth borosilicate glass powder dispersed in a vehicle containing a heat-depolymerizing organic polymer. The thick film resistor composition, employing this heat-depolymerizing organic polymer, can be fired in a nonoxidizing atmosphere and coexist with base metal materials such as copper electrodes. Owing to the Nb.sub.2 O.sub.5 and Ta.sub.2 O.sub.5 contained in the alkaline earth borosilicate glass powder, the thick film resistor composition is free from sheet resistivity fluctuation, according to resistor length, which would result from diffusion of the electrode material into the resistor.
A thick film resistor composition comprising a silicide powder and an alkaline earth borosilicate glass powder dispersed in a vehicle containing an acrylic polymer, said silicide powder being composed of 0-40 mol % of molybdenum disilicide and a 100-60 mol % of a mixture of a tantalum disilicide and a magnesium silicide, the mol ratio of said tantalum disilicide to said magnesium silicide ranging from 9.5:0.5 to 5:5, said alkaline earth borosilicate glass powder containing 8-10 wt % of niobium pentoxide.
A thick film resistor composition comprising a silicide powder and an alkaline earth borosilicate glass powder being dispersed in a vehicle containing a acrylic polymer, said silicide powder being composed of 10-90 mol % of cobalt silicide and 90-10 mol % of nickel disilicide, said alkaline earth borosilicate glass powder containing 8-10 wt % of niobium pentoxide.
Dependencies are inferred from the claim text.