| 简介 |
PROBLEM TO BE SOLVED : To obtain a current-voltage non-linear resistor which can achieve miniaturization of an overcurrent protector, has high resistance value and excellent thermal stability, and is excellent in non-linear resistant characteristics and life characteristics. SOLUTION : The resistor is configured of a sintered body principally containing zinc oxide, containing as sub-components : bismuth, cobalt, manganese, antimony and nickel which are converted into oxide expressions of 0.3-1.5 mol% Bi2O3, 0.3-2.0 mol% Co2O3, 0.4-3 mol% MnO, 0.5-4 mol% Sb2O3and 0.5-4 mol% NiO respectively, further containing 0.001-0.02 mol% Al3+, containing an oxide of at least one kind of rare-earth element R which is converted into an oxide expression of 0.05-1.0 mol% R2O3, the element R being selected from among yttrium, europium, erbium, thulium, gadolinium, dysprosium, holmium and ytterbium, and further, having content not less than 90 mol% ZnO. COPYRIGHT : (C)2008, JPO&INPIT |
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