公开(公告)号：US12106877B2

公开(公告)日：2024-10-01

申请号：US17768271

申请日：2020-09-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Sayaka Matsumoto ,  Ken Yanai ,  Masashi Takamura ,  Masaya Hattori ,  Tomomitsu Muraishi

IPC: H01C1/14 ,  H01C7/10 ,  H01C7/18

CPC classification number: H01C1/14 ,  H01C7/10 ,  H01C7/18

Abstract: It is aimed to provide a laminated varistor capable of reducing stray capacitance to occur between an internal electrode and an external electrode, and also capable of reducing a variation in the stray capacitance due to a variation in the external electrode. A laminated varistor of the present disclosure has external electrodes on first end surface, second end surface, and first side surface of sintered body. No external electrode is provided on second side surface opposite to first side surface. Varistor regions in which internal electrodes overlap each other in a laminating direction are provided at positions closer to second side surface than to first side surface.

公开(公告)号：US11791072B2

公开(公告)日：2023-10-17

申请号：US17632827

申请日：2020-07-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Michiya Watanabe ,  Naoki Mutou ,  Ken Yanai

IPC: H01C7/18 ,  H01C7/102 ,  H01C7/112

CPC classification number: H01C7/18 ,  H01C7/102 ,  H01C7/112

Abstract: A laminated varistor includes a varistor layer, a first internal electrode provided on an upper surface of the varistor layer, a second internal electrode provided on a lower surface of the varistor layer and facing the first internal electrode across the varistor layer in upward and downward directions, a first external electrode provided on a first side surface of the varistor layer and electrically connected to the first internal electrode, and a second external electrode provided on a second side surface of the varistor layer and electrically connected to the second internal electrode. The first internal electrode is extended from the first external electrode in a first extension direction. The first internal electrode includes first electrode strips arranged in a first arrangement direction perpendicular to the first extension direction and spaced apart from one another. This laminated varistor has improved surge-resistant characteristics.

公开(公告)号：US12224090B2

公开(公告)日：2025-02-11

申请号：US17796143

申请日：2021-12-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masashi Takamura ,  Sayaka Watanabe ,  Takeshi Fujii ,  Ken Yanai ,  Yuto Akiyama

IPC: H01C7/105 ,  H01C1/148

Abstract: A multilayer varistor has a stack structure including a plurality of layers stacked in a third direction. The multilayer varistor includes a first internal electrode electrically connected to a first external electrode, a second internal electrode electrically connected to the second external electrode, and a third internal electrode electrically connected to the third external electrode. The first internal electrode is disposed between the second internal electrode and the third internal electrode in the third direction.

公开(公告)号：US12183491B2

公开(公告)日：2024-12-31

申请号：US17907267

申请日：2021-03-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masashi Takamura ,  Ken Yanai ,  Sayaka Watanabe ,  Tomomitsu Muraishi

IPC: H01C7/18 ,  H01C7/112 ,  H01G4/30 ,  H01G4/40

Abstract: A stacked varistor having a small variation in electrostatic capacitance is obtained. The stacked varistor includes first internal electrode projection extending from third internal electrode toward first end surface between first side surface and first varistor region, and second internal electrode projection extending from third internal electrode toward second end surface between first side surface and second varistor region. First internal electrode projection extends closer to first end surface than a line connecting point closest to first end surface of first varistor region and point closest to first end surface of third external electrode is. Second internal electrode projection extends closer to second end surface than a line connecting point closest to second end surface of second varistor region and point closest to second end surface of third external electrode is.

公开(公告)号：US11387023B2

公开(公告)日：2022-07-12

申请号：US16622572

申请日：2018-09-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Ken Yanai ,  Tomokazu Yamaguchi ,  Yuji Yamagishi ,  Naoki Mutou ,  Sayaka Matsumoto ,  Ryosuke Usui

IPC: H01G7/00 ,  H01C17/30 ,  H01C7/10 ,  H01C7/18 ,  H01C17/28

Abstract: A sintered body that includes ceramic layers and an internal electrode which are alternately stacked on one another is prepared. A first external electrode is formed on a side surface of the sintered body such that the first external electrode is connected to the internal electrode. An insulating layer is formed on a surface of the sintered body by applying a glass coating over an entire of the sintered body having the formed first external electrode. The insulating layer is exposed from the first external electrode. A second external electrode is formed on the first external electrode. This method provides the produced multilayer electronic component with a stable electric connection between the internal electrodes and the external electrodes.