公开(公告)号：US20240074039A1

公开(公告)日：2024-02-29

申请号：US18355525

申请日：2023-07-20

Applicant: TDK CORPORATION

Inventor： Naoyoshi YOSHIDA ,  Masato HAYATSU ,  Shunsuke TAKAHASHI ,  Sota HIRABA

IPC: H05K1/02

CPC classification number: H05K1/0257 ,  H05K2201/0746

Abstract: A transient voltage protection device includes an element body formed with a cavity inside, a pair of external electrodes on the element body, and a pair of internal electrodes in the element body. The pair of internal electrodes oppose each other. Each internal electrode is connected to a corresponding external electrode of the pair of external electrodes. The element body includes a first inner surface and a second inner surface. The first and second inner surfaces define the cavity and oppose each other. The pair of internal electrodes are exposed to the cavity and disposed on the first inner surface. In a cross section along a direction in which the first inner surface and the second inner surface oppose each other, the first inner surface includes a contour different from a contour included in the second inner surface.

公开(公告)号：US20240275135A1

公开(公告)日：2024-08-15

申请号：US18437653

申请日：2024-02-09

Applicant: TDK CORPORATION

Inventor： Yoshihiro SHINKAI ,  Naoyoshi YOSHIDA ,  Masato HAYATSU ,  Shunsuke TAKAHASHI ,  Sota HIRABA

IPC: H01T4/10 ,  H01T1/22 ,  H02H9/04

CPC classification number: H01T4/10 ,  H01T1/22 ,  H02H9/044

Abstract: A transient voltage protection device comprises a pair of discharge electrodes opposing each other with a gap therebetween and a discharge inducing portion in contact with the pair of discharge electrodes. The discharge inducing portion comprises a ceramic component, metal particles, and pores discontinuously scattered. The pores have an average size of 0.05 μm or more and 1.04 μm or less.

公开(公告)号：US20240071655A1

公开(公告)日：2024-02-29

申请号：US18455984

申请日：2023-08-25

Applicant: TDK CORPORATION

Inventor： Shunsuke TAKAHASHI ,  Masato HAYATSU ,  Sota HIRABA ,  Naoyoshi YOSHIDA

IPC: H01C1/148 ,  H01C7/12

CPC classification number: H01C1/148 ,  H01C7/12

Abstract: A transient voltage protection device includes an element body formed with a cavity inside, a pair of internal electrodes, and a discharge assistance portion. The pair of internal electrodes are disposed in the element body and include edges. The edges include parts opposing each other in a first direction in the cavity. The discharge assistance portion is in contact with the parts of the edges. Each of the edges includes a first end exposed on an outer surface of the element body and a second end located opposite the first end and including a corner. The discharge assistance portion includes a pair of edges opposing each other in a second direction intersecting with the first direction and exposed to the cavity. The part included in each of the edges does not include the corner.