VOLTAGE-DEPENDENT RESISTOR

摘要

A voltage-dependent resistor comprising a sintered body consisting essentially of ZnO, as a main constituent, and, as additives, bismuth oxide (Bi2O3), titanium oxide (TiO2) and one or two members selected from the group consisting of aluminum fluoride (AlF3), chromium fluoride (CrF3), nickel fluoride (NiF2) 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 (B2O3), chromium oxide (Cr2O3), nickel oxide (NiO) and germanium oxide (GeO2) improve the voltage nonlinear property of the sintered body.