| 简介 |
PROBLEM TO BE SOLVED : To obtain a barium titanate positive temperature coefficient thermistor which is not deteriorated in breakdown voltage, allowable rush power, and on-off cycle life even when the specific resistance of an element material is reduced, and has a low resistance value. SOLUTION : A barium titanate solution expressed by a chemical formula, (BaxSryCazPdsDt)TiuO3, where x, y, z, s, t, and u respectively meet relations of 0.4180<=x<=0.8080, 0.02<=y<=0.030, 0.05<=z<=0.20, 0.01<=s<=0.15, 0.0010<=t<=0.0035, and 0.95<=u<=1.02, with x+y+z+s+t=1, and D represents at least one kind of rare-earth element of Pr or Sm, contains Mn and Si at rates of 0.001-0.0065 wt.% and 0.09-1.0 wt.%, respectively. |
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