公开(公告)号：US20180082793A1

公开(公告)日：2018-03-22

申请号：US15703724

申请日：2017-09-13

Applicant: TDK CORPORATION

Inventor： Fumiaki SATOH ,  Takehisa TAMURA ,  Yuma HATTORI ,  Toru ONOUE ,  Daisuke HIMETA ,  Ken MORITA ,  Takuto OKAMOTO

IPC: H01G4/35 ,  H01G4/228 ,  H01G4/12 ,  H01G4/005

Abstract: An element body includes first and second end surfaces opposing each other in a first direction, first and second side surfaces opposing each other in a second direction, and first and second principal surfaces opposing each other in a third direction. The length of the element body in the second direction is shorter than that of the element body in the first direction, and the length of the element body in the third direction is shorter than that of the element body in the second direction. A pair of first external electrodes is disposed at both ends of the element body in the first direction. A second external electrode is disposed on the element body and positioned between the pair of first external electrodes. The second external electrode includes a first conductor part disposed on the first side surface. A depression is formed in the first conductor part.

公开(公告)号：US20220238279A1

公开(公告)日：2022-07-28

申请号：US17569815

申请日：2022-01-06

Applicant: TDK CORPORATION

Inventor： Toru ONOUE ,  Daisuke HIMETA ,  Yusuke KARASAWA

IPC: H01G4/30 ,  H01G4/012 ,  H01G4/232 ,  H01G4/12

Abstract: In the sintered electrode layer covering the one end face, a wraparound dimension of a wraparound portion wrapping around from the one end face to the one main face in the facing direction is set to a dimension b, a distance between the one end face and the end portions of the plurality of second internal electrodes on the one end face side in the facing direction is set to a dimension Lg, a distance between the pair of main faces in the stacking direction is set to a dimension T, and a distance between the one main face and the second internal electrode closest to the one main face is set to a dimension Tg1, a relational expression of Lg>b−(2×b×Tg1/T) is satisfied.

公开(公告)号：US20250037934A1

公开(公告)日：2025-01-30

申请号：US18763080

申请日：2024-07-03

Applicant: TDK Corporation

Inventor： Hikaru HIRABAYASHI ,  Daisuke HIMETA ,  Daisuke YOSHIDA ,  Yuya NAGASAKI

IPC: H01G4/012 ,  H01G4/008 ,  H01G4/30

Abstract: In an element body of a multilayer capacitor C1, a plurality of dielectric layers and a plurality of internal electrode layers extend in a first and second direction orthogonal to each other, and the plurality of dielectric layers and the plurality of internal electrode layers are alternately laminated in a third direction intersecting the first direction and second direction. The element body includes at least one end surface. At least one internal electrode layer among the plurality of internal electrode layers is exposed from the plurality of dielectric layers at at least one end surface. The external electrode terminal is provided on the at least one end surface and is connected to the at least one internal electrode layer. In the element body, a weight ratio of a metal containing Ni is from 20% to 25%, and a weight ratio of sulfur is from 3 ppm to 20 ppm.

公开(公告)号：US20180286583A1

公开(公告)日：2018-10-04

申请号：US15903976

申请日：2018-02-23

Applicant: TDK CORPORATION

Inventor： Toru ONOUE ,  Daisuke HIMETA ,  Hikaru HIRABAYASHI ,  Fumiaki SATOH ,  Yuma HATTORI ,  Takuto OKAMOTO

IPC: H01G4/01 ,  H01G4/35 ,  H01G4/30

CPC classification number: H01G4/35 ,  H01G4/012 ,  H01G4/12 ,  H01G4/232 ,  H01G4/2325 ,  H01G4/30

Abstract: A first external electrode is disposed on an end surface. A second external electrode is disposed on a side surface. The first external electrode includes a first sintered electrode layer, a second sintered electrode layer disposed on the first sintered electrode layer, and a plated layer disposed on the second sintered electrode layer. The second external electrode includes a third sintered electrode layer and a plated layer disposed on the third sintered electrode layer. The first, second, and third sintered electrode layers include a void. A void fraction of each of the first and third sintered electrode layers is larger than a void fraction of the second sintered electrode layer.

公开(公告)号：US20180082792A1

公开(公告)日：2018-03-22

申请号：US15703632

申请日：2017-09-13

Applicant: TDK CORPORATION

Inventor： Fumiaki SATOH ,  Takehisa TAMURA ,  Yuma HATTORI ,  Toru ONOUE ,  Daisuke HIMETA ,  Ken MORITA ,  Takuto OKAMOTO

IPC: H01G4/35 ,  H01G4/228 ,  H01G4/005 ,  H01G4/12

CPC classification number: H01G4/35 ,  H01G2/06 ,  H01G4/005 ,  H01G4/12 ,  H01G4/228 ,  H01G4/232 ,  H01G4/2325 ,  H01G4/30

Abstract: An element body includes first and second end surfaces opposing each other in a first direction, first and second side surfaces opposing each other in a second direction, and first and second principal surfaces opposing each other in a third direction. The length of the element body in the third direction is shorter than that of the element body in the first direction and is shorter than that of the element body in the second direction. A pair of first external electrodes is disposed at both ends of the element body in the first direction. Each of the first external electrodes includes a first conductor part disposed on one main surface and a second conductor part disposed on the end surface and coupled to the first conductor part. The porosity of the first conductor part is smaller than that of the second conductor part.