Varistor includes oxides of bismuth, cobalt, manganese, antimony

Details Varistor includes oxides of bismuth, cobalt, manganese, antimony Varistor includes oxides of bismuth, cobalt, manganese, antimony

1983-12-19

1985-08-13

Envall, Jr., Roy N.

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

252518, 252521, H01C 710, C04B 3500

Patent

active

045353140

ABSTRACT:
A varistor having good voltage-current nonlinear characteristics and a long life performance. The varistor is formed of a sintered body consisting essentially of zinc oxide as a major component, 0.1 to 5 mol % of bismuth in terms of Bi.sub.2 O.sub.3, 0.1 to 5 mol % of cobalt in terms of Co.sub.2 O.sub.3, 0.1 to 5 mol % of manganese in terms of MnO, 0.1 to 5 mol % of antimony in terms of Sb.sub.2 O.sub.3, 0.1 to 5 mol % of nickel in terms of NiO, and 0.001 to 0.05 mol % of aluminum in terms of Al.sup.3+.

REFERENCES:
patent: 4042535 (1977-08-01), May
patent: 4045374 (1977-08-01), Nagasawa et al.
patent: 4046847 (1977-09-01), Kresge
patent: 4374049 (1983-02-01), Ellis et al.
patent: 4400683 (1983-08-01), Eda et al.
patent: 4450426 (1984-05-01), Miyoshi et al.

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