H - Electricity – 01 – C
Patent
H - Electricity
01
C
356/107
H01C 7/02 (2006.01) H05B 3/14 (2006.01) H05B 3/50 (2006.01)
Patent
CA 2002319
A PTC thermister device, comprising: a PTC thermister element essentially made of a ceramic plate; a pair of opposing electrodes formed on either major surface of the PTC thermister element to a thickness of 50 to 300 micrometers; and heat radiation fins made of metallic plates and having a plurality of peaks which are brazed to associated ones of the opposing electrodes. Since the opposing electrodes are made thicker than those of conventional PTC thermister devices and the heat radiation fin plates are directly attached to the opposing electrodes by brazing, the efficiency of heat conduction is much improved without giving rise to excessive thermal stress in the brazed parts. Further, since a substantial part of the opposing electrodes are exposed, the opposing electrodes themselves contribute to the improvement of the efficiency of heat radiation from the PTC thermister device.
Aoki Mitsuo
Matsuda Yasuaki
Takahata Daisuke
Takemura Hiroshi
Ado Electronic Industrial Co. Ltd.
Mitsubishi Aluminum Kabushiki Kaisha
Ridout & Maybee Llp
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