公开(公告)号：US20230368976A1

公开(公告)日：2023-11-16

申请号：US18138206

申请日：2023-04-24

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yoshihiro FUKUDA

IPC: H01G4/232 ,  H01G4/30

CPC classification number: H01G4/2325 ,  H01G4/30

Abstract: A multilayer ceramic electronic component includes a multilayer body including first and second internal electrode layers extending first and second end surfaces, first and second external electrodes respectively on the first and second end surfaces and respectively connected to the first and second internal electrode layers. The first external electrode includes first and third Cu plating layers, the second external electrode includes second and fourth Cu plating layers. Average numbers of Cu particles are about 1.5 or less in two or more first or second square regions of the first and second Cu plating layers. Average numbers of Cu particles are more than about 1.5 in two or more third or fourth square regions of the third and fourth Cu plating layer. The first square regions to the fourth square regions each has a square or substantially square shape with each side having a dimension of about 2 μm.

公开(公告)号：US20220262566A1

公开(公告)日：2022-08-18

申请号：US17580848

申请日：2022-01-21

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yoshihiro FUKUDA

IPC: H01G2/14 ,  H01G4/30 ,  H01G4/248 ,  H01G4/232

Abstract: A multilayer ceramic capacitor includes a multilayer body including dielectric layers and internal electrode layers that are laminated and a pair of external electrodes electrically connected to the internal electrode layers. The multilayer body includes an effective portion, a principal surface-side outer layer between both principal surfaces and outermost surfaces of the effective portions on both principal surface sides, and an end surface-side outer layer between both end surfaces and outermost surfaces of the effective portions on both end surface sides. The principal surface-side outer layer includes a glass layer facing the effective portion. The glass layer overlaps tips of the external electrodes on a portion of both principal surfaces and a portion of both side surfaces, and the glass layer is not exposed from the effective portion at both end surfaces.

公开(公告)号：US20180137982A1

公开(公告)日：2018-05-17

申请号：US15811758

申请日：2017-11-14

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takashi SAWADA ,  Yoshihiro FUKUDA

IPC: H01G4/30 ,  H01G4/248

Abstract: A multilayer ceramic electronic component includes a first external electrode and a second external electrode. The first external electrode includes a first extension portion that extends to a third side surface. The second external electrode includes a second extension portion that extends to the third side surface. When the third side surface is viewed from a direction in which the third side surface and a fourth side surface are opposed, the first extension portion and the second extension portion each include a base portion extending along an edge of the third side surface in a first direction, and protrusion portions extending from both ends of the base portion in the first direction along edges of the third side surface in the direction in which a first side surface and a second side surface are opposed.