PTC thermistor body, PTC thermistor, method of making PTC...

Details PTC thermistor body, PTC thermistor, method of making PTC... PTC thermistor body, PTC thermistor, method of making PTC...

2006-03-28

2006-03-28

Easthom, Karl D. (Department: 2832)

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

C029S610100, C029S612000, C252S513000

Reexamination Certificate

active

07019613

ABSTRACT:
A PTC thermistor10comprises, at least, a pair of electrodes2, 3and a thermistor body1, disposed between the electrodes2, 3, having a positive resistance vs. temperature characteristic. The thermistor body includes, at least, a thermoplastic resin and an electrically conductive particle made of a metal powder. The thermoplastic resin and electrically conductive particle have respective contents and a state of dispersion adjusted so as to yield a magnetization of 4.0×10−5to 6.0×10−5Wb·m·kg−1when a magnetic field of 3.98×105A·m−1is applied to the thermistor body.

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