Ptc resistor
AssigneeTokyo Cosmos Electric Co., Ltd.
InventorsHajime MIYAHARA, Hironori ITO
Life of this patent
Estimating the term…
Abstract
The present invention addresses the problem of providing a PTC resistor wherein the resistance value is easily increased within a short time after reaching a certain temperature and the resistance value after temperature increase is high. A PTC resistor according to the present invention, which solves the above-described problem, comprises conductive particles, a polyolefin-based wax and a binder resin. With respect to the DSC curve of the polyolefin-based wax as obtained by raising the temperature from 25° C. to 150° C. at a heating rate of 10° C./min using a differential scanning calorimeter, the number of melting peaks found in the DSC curve is 1 or 2.
Claims5
A PTC resistor comprising:
- a conductive particle;
- a polyolefin-based wax;
- and
- a binder resin, wherein
- the polyolefin-based wax has one or two melting peaks observed in a DSC curve obtained by increasing a temperature of the polyolefin-based wax at a temperature rising rate of 10° C./min from 25° C. to 150° C. using a differential scanning calorimeter.
Dependencies are inferred from the claim text.