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US 2003/0151488 A1Published application
Thermistor chips for surface mounting
AssigneeMurata Manufacturing Co., Ltd.
InventorsNoboru Furukawa, Masahiko Kawase, Yasunori Ito
Life of this patent
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Abstract
A thermistor chip has an NTC thermistor element with outer electrodes formed on its end surfaces. Diffused layers, having a higher specific resistance than the material of the thermistor element, are formed proximally to all externally exposed surfaces of the thermistor element by subjecting an inorganic material and the thermistor element together to a firing process at 100-1300° C. The diffused layers are free of any insulating layer thereupon and substantially entirely exposed externally, except where the outer electrodes are formed.
Claims7
A thermistor chip comprising:
- an NTC thermistor element having end surfaces opposite each other;
- outer electrodes on said end surfaces;
- and
- diffused layers formed by subjecting an inorganic material and said thermistor element together to a firing process at 1000-1300° C., said diffused layers having a higher specific resistance than material of said thermistor element, said diffused layers being formed proximally to all externally exposed surfaces of said thermistor element and being free of any insulating layer thereupon.
1 more element
Dependencies are inferred from the claim text.