Voltage-dependent resistor

Details Voltage-dependent resistor Voltage-dependent resistor

1975-01-06

1977-06-07

Padgett, Benjamin R.

Compositions

Electrically conductive or emissive compositions

Metal compound containing

252518, 252520, 252521, H01B 108

Patent

active

040282775

ABSTRACT:
A voltage-dependent resistor comprising a sintered body consisting essentially of ZnO, as a main constituent, and, as additives, bismuth oxide (Bi.sub.2 O.sub.3), titanium oxide (TiO.sub.2) and one or two members selected from the group consisting of aluminum fluoride (AlF.sub.3), chromium fluoride (CrF.sub.3), nickel fluoride (NiF.sub.2) and strontium oxide (SrO) with electrodes applied to the opposite surfaces of the sintered body. This voltage-dependent resistor has a low C-value, a high n-value and a high power dissipation for surge energy and high stability to a high D.C. load. Other additives such as cobalt oxide (CoO), manganese oxide (MnO), barium oxide (BaO), boron oxide (B.sub.2 O.sub.3), chromium oxide (Cr.sub.2 O.sub.3), nickel oxide (NiO) and germanium oxide (GeO.sub.2) improve the voltage nonlinear property of the sintered body.

REFERENCES:
patent: 3658725 (1972-04-01), Masuyama et al.
patent: 3663458 (1972-05-01), Masuyama et al.
patent: 3687871 (1972-08-01), Masuyama et al.
patent: 3764566 (1973-10-01), Matsuoka et al.
patent: 3936396 (1976-02-01), Masuyama et al.

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