Negative temperature coefficient thermistor

Details Negative temperature coefficient thermistor Negative temperature coefficient thermistor

2000-02-23

2000-11-14

Easthom, Karl D.

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

338 22, 338 50, H01C 713

Patent

active

061475890

ABSTRACT:
It is an object of the present invention to provide an improved negative temperature coefficient thermistor capable of increasing an adhesion strength between a negative temperature coefficient thermistor element consisting of LaCoO.sub.3 rare earth transition element oxide on one hand and electrodes on the other, thereby improving a reliability of the thermistor product. The negative temperature coefficient thermistor of the present invention is obtained by forming electrodes on the surface of a negative temperature coefficient thermistor element consisting of LaCoO.sub.3 rear earth transition element oxide. Such electrodes are formed by adding one or more kinds of oxide powders of Ni, Cr, Mn and Fe in a metal powder, with the content of the oxide powders in the metal powder being 1.0 wt % or less (however, not including 0 wt %).

REFERENCES:
patent: 5504371 (1996-04-01), Niimi et al.
patent: 5703000 (1997-12-01), Nakayama et al.

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