Laminated PTC thermistor element

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United States of America Patent

PATENT NO 9530547
APP PUB NO 20150091690A1
SERIAL NO

14565495

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Abstract

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A laminated PTC thermistor element that includes a ceramic substrate including a plurality of ceramic layers, a plurality of internal electrodes within the ceramic substrate, and external electrodes on the surface of the ceramic substrate that provide electrical conduction to the internal electrodes. The ceramic substrate is 0.3 [μm] or more and 1.2 [μm] or less in average porcelain grain size. Furthermore, the relative density of the ceramic substrate has a lower limit of 70 [%], and an upper limit of −6.43d+97.83 [%] when the average porcelain grain size is denoted by d.

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Patent Owner(s)

  • MURATA MANUFACTURING CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aoto, Wataru Nagaokakyo, JP 4 6
Katsu, Hayato Nagaokakyo, JP 18 53
Nabika, Yasuhiro Nagaokakyo, JP 13 60
Saigo, Yumin Nagaokakyo, JP 2 3

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