ESD protection device
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United States of America Patent
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May 14, 2019
Grant Date -
Apr 5, 2018
app pub date -
Dec 7, 2017
filing date -
Jul 28, 2015
priority date (Note) -
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Abstract
An ESD protection device includes an insulating ceramic body including a cavity portion, an auxiliary electrode including a first and second main surfaces, the auxiliary electrode being embedded in the insulating ceramic body such that a side end portion of the auxiliary electrode between the first and second main surfaces is exposed to the cavity portion, and first and second discharge electrodes embedded in the insulating ceramic body such that main surfaces of the first and second discharge electrodes face each other with the auxiliary electrode interposed therebetween, the auxiliary electrode including first and second auxiliary electrode layers, the first auxiliary electrode layer having a higher content of a conductive material than the second auxiliary electrode layer, the first auxiliary electrode layer being joined to at least one of the first and second discharge electrodes.
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