Current/voltage non-linear resistor and sintered body therefor

摘要

A current/voltage non-linear resistor comprises a sintered body (2) having a main component of ZnO, an electrode (3) applied to a surface of the sintered body (2) and an insulation material (4) applied to another surface of the sintered body. The main component containing, as auxiliary components, Bi, Co, Mn, Sb, Ni and Al, and the contents of the auxiliary components are respectively expressed as Bi2O3 Co2O3, MnO, Sb2O3, NiO and Al<3+>, of Bi2O3: 0.3 to 2 mol%, Co2O3: 0.3 to 1.5 mol%, MnO: 0.4 to 6 mol%, Sb2O3: 0.8 to 7 mol%, NiO: 0.5 to 5 mol% and Al<3+>: 0.001 to 0.02 mol%; a Bi2O3 crystalline phase in the sintered body including an alpha -B12O3 phase representing at least 80% of the total Bi2O3 phase.