公开(公告)号：US12100536B2

公开(公告)日：2024-09-24

申请号：US17829569

申请日：2022-06-01

Applicant: TDK CORPORATION

Inventor： Yusuke Imai ,  Masato Hayatsu ,  Naoyoshi Yoshida ,  Takeshi Yanata

IPC: H01C1/142 ,  H01C1/148 ,  H01C7/10 ,  H01C7/12

CPC classification number: H01C1/142 ,  H01C7/1006 ,  H01C7/123 ,  H01C1/148

Abstract: A transient voltage protection device includes: an element body; a cavity portion provided in the element body; a pair of internal electrodes disposed in the element body; and a pair of external electrodes connected to the pair of internal electrodes. The pair of internal electrodes extend along a first direction and face each other in a second direction intersecting the first direction. The cavity portion includes a gap region located between the pair of internal electrodes in the second direction. A tip portion of at least one of the pair of internal electrodes is in contact with only the element body.

公开(公告)号：US11594351B2

公开(公告)日：2023-02-28

申请号：US17533920

申请日：2021-11-23

Applicant: TDK CORPORATION

Inventor： Shin Kagaya ,  Masayuki Uchida ,  Naoyoshi Yoshida ,  Takeshi Yanata ,  Satoshi Goto ,  Takeshi Oyanagi ,  Yusuke Imai ,  Daiki Suzuki ,  Kaname Ueda

IPC: H01C7/18 ,  H01C7/112 ,  H01C7/10

Abstract: A multilayer chip varistor includes an element body, first and second external electrodes, and first and second electrical conductor groups. The first electrical conductor group includes a first internal electrode connected to the first external electrode, and a first intermediate electrical conductor opposed to the first internal electrode. The second electrical conductor group includes a second internal electrode including a first electrically conductive material and connected to the second external electrode, and a second intermediate electrical conductor opposed to the second internal electrode. At least one of the first and second intermediate electrical conductors includes the second electrically conductive material. The element body includes a low electrical resistance region between the first and second internal electrodes. The second electrically conductive material is diffused in the low electrical resistance region.

公开(公告)号：US12027292B2

公开(公告)日：2024-07-02

申请号：US17829569

申请日：2022-06-01

Applicant: TDK CORPORATION

Inventor： Yusuke Imai ,  Masato Hayatsu ,  Naoyoshi Yoshida ,  Takeshi Yanata

IPC: H01C1/142 ,  H01C1/148 ,  H01C7/10 ,  H01C7/12

CPC classification number: H01C1/142 ,  H01C7/1006 ,  H01C7/123 ,  H01C1/148

Abstract: A transient voltage protection device includes: an element body; a cavity portion provided in the element body; a pair of internal electrodes disposed in the element body; and a pair of external electrodes connected to the pair of internal electrodes. The pair of internal electrodes extend along a first direction and face each other in a second direction intersecting the first direction. The cavity portion includes a gap region located between the pair of internal electrodes in the second direction. A tip portion of at least one of the pair of internal electrodes is in contact with only the element body.

公开(公告)号：US11302464B2

公开(公告)日：2022-04-12

申请号：US17230100

申请日：2021-04-14

Applicant: TDK CORPORATION

Inventor： Satoshi Goto ,  Naoyoshi Yoshida ,  Takeshi Yanata ,  Takeshi Oyanagi ,  Daiki Suzuki ,  Shin Kagaya ,  Masayuki Uchida ,  Yusuke Imai

IPC: H01C7/10 ,  H01C7/102 ,  H01C7/108

Abstract: A chip varistor includes an element body exhibiting varistor characteristics, internal electrodes containing a first electrically conductive material, and an intermediate conductor containing a second electrically conductive material. The intermediate conductor is separated from the internal electrodes in a direction in which the internal electrodes oppose each other, and is disposed between the internal electrodes. At least a part of the intermediate conductor overlaps the internal electrodes in the direction in which the internal electrodes oppose each other. The element body includes a low resistance region in which the second electrically conductive material is diffused. The low resistance region is located between the first and second internal electrodes in the direction in which the first and second internal electrodes oppose each other.

公开(公告)号：US11682504B2

公开(公告)日：2023-06-20

申请号：US17687752

申请日：2022-03-07

Applicant: TDK CORPORATION

Inventor： Satoshi Goto ,  Naoyoshi Yoshida ,  Takeshi Yanata ,  Takeshi Oyanagi ,  Daiki Suzuki ,  Shin Kagaya ,  Masayuki Uchida ,  Yusuke Imai

IPC: H01C7/10 ,  H01C7/102 ,  H01C7/108

CPC classification number: H01C7/1006 ,  H01C7/102 ,  H01C7/108

Abstract: A chip varistor includes an element body exhibiting varistor characteristics, internal electrodes containing a first electrically conductive material, and an intermediate conductor containing a second electrically conductive material. The intermediate conductor is separated from the internal electrodes in a direction in which the internal electrodes oppose each other, and is disposed between the internal electrodes. At least a part of the intermediate conductor overlaps the internal electrodes in the direction in which the internal electrodes oppose each other. The element body includes a low resistance region in which the second electrically conductive material is diffused. The low resistance region is located between the first and second internal electrodes in the direction in which the first and second internal electrodes oppose each other.