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公开(公告)号：US20240013955A1
公开(公告)日：2024-01-11
申请号：US18252671
申请日：2021-11-16
Inventor： Keiji KAWAJIRI , Naoki MUTOU , Hironori MOTOMITSU , Michiya WATANABE , Yuji YAMAGISHI , Yasuhiro NISHIMURA
Abstract: A multilayer varistor includes a sintered body, a first external electrode, a second external electrode, a first internal electrode, a second internal electrode, and a high-resistivity portion. The first internal electrode is provided inside the sintered body and electrically connected to the first external electrode. The second internal electrode is provided inside the sintered body and electrically connected to the second external electrode. The high-resistivity portion includes: a surface high-resistivity portion provided to cover a surface of the sintered body; and an inner high-resistivity portion extended inward from the surface high-resistivity portion inside the sintered body.
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公开(公告)号：US20230081158A1
公开(公告)日：2023-03-16
申请号：US17892711
申请日：2022-08-22
Inventor： Keiji KAWAJIRI , Naoki MUTOU , Hironori MOTOMITSU , Michiya WATANABE , Yuji YAMAGISHI
IPC: H01C7/102 , H01C7/112 , H01C7/10 , H01C1/142 , H01C17/065
Abstract: A varistor includes a sintered body, an internal electrode, an insulating layer, and an external electrode. The internal electrode is disposed in an interior of the sintered body. The insulating layer covers at least part of the sintered body and includes Zn2SiO4. The external electrode is electrically connected to the internal electrode, covers part of the sintered body and part of the insulating layer, and is in contact with the part of the insulating layer. The insulating layer has a region being in contact with the external electrode, the region having a greater average thickness than a region of the insulating layer which is out of contact with the external electrode.
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