MULTILAYER VARISTOR

To provide a multilayer varistor capable of suppressing the occurrence of migration on the high resistance layer surface.SOLUTION: A multilayer varistor (1) includes: a sintered body (11); Internal electrode (12) provided inside the sintered body (11); a high resistance layer (13) containing Si elem...

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Bibliographic Details
Main Authors YANAI KEN, AKIYAMA YUTO, USUI RYOSUKE, YAMAGISHI YUJI
Format Patent
LanguageEnglish
Japanese
Published 05.07.2023
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
RESISTORS
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Summary:To provide a multilayer varistor capable of suppressing the occurrence of migration on the high resistance layer surface.SOLUTION: A multilayer varistor (1) includes: a sintered body (11); Internal electrode (12) provided inside the sintered body (11); a high resistance layer (13) containing Si element formed to cover at least part of the sintered body (11); and a silver-based external electrode (14) electrically connected to the internal electrode (12) formed to cover part of the high resistance layer (13). The ratio of the total mass of alkali metal elements and alkaline earth metal elements to the mass of Si element in the surface layer of the high resistance layer (13) is 0.6 or less.SELECTED DRAWING: Figure 1 【課題】高抵抗層表面におけるマイグレーションの発生を抑制することができる積層バリスタを提供する。【解決手段】積層バリスタ（１）は、焼結体（１１）と、焼結体（１１）の内部に設けられた内部電極（１２）と、焼結体（１１）の少なくとも一部を覆うように設けられ、Ｓｉ元素を含有する高抵抗層（１３）と、高抵抗層（１３）の一部を覆うように設けられ、内部電極（１２）に電気的に接続された銀を主成分とする外部電極（１４）とを備える。高抵抗層（１３）の表層中におけるＳｉ元素の質量に対するアルカリ金属元素およびアルカリ土類金属元素の総質量の比が、０．６以下である。【選択図】図１
Bibliography:Application Number: JP20210209885