公开(公告)号：US20240387112A1

公开(公告)日：2024-11-21

申请号：US18788314

申请日：2024-07-30

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Toshiyuki NAKAMURA

IPC: H01G4/232 ,  H01G4/30 ,  H05K1/18

Abstract: A multilayer ceramic capacitor includes a first end-surface electrode covering portions of first and second main surfaces and first and second side surfaces, a second end-surface electrode covering portions of the first and second main surfaces and first and second side surfaces, a first side-surface electrode covering portions of the first and second main surfaces, and a second side-surface electrode covering portions of the first main surface and the second main surface, the first and second internal electrodes being connected to the first and second end-surface electrodes. The first and second end-surface electrodes each include a first base electrode layer and first and second plating electrode layers, and the first and second side-surface electrodes each include a second base electrode layer and third, fourth, fifth, and sixth plating electrode layers.

公开(公告)号：US20230317375A1

公开(公告)日：2023-10-05

申请号：US18124606

申请日：2023-03-22

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yuichiro MORIMOTO ,  Toshiyuki NAKAMURA ,  Noriyuki OOKAWA ,  Daisho TSUBOKAWA ,  Masaru TAKAHASHI ,  Nobuyasu HAMAMORI

IPC: H01G4/232 ,  H01G4/30 ,  H01G4/012 ,  H01G4/008 ,  H01G4/12 ,  H01G2/06

CPC classification number: H01G4/2325 ,  H01G4/30 ,  H01G4/012 ,  H01G4/008 ,  H01G4/12 ,  H01G2/065

Abstract: In a three-terminal multilayer ceramic capacitor, each of first through fourth external electrodes includes a base electrode layer including a conductive metal and a glass component, an organic layer including an organosilicon compound covering the base electrode layer, and a plating layer on the organic layer. On a surface of the organic layer in a portion facing the plating layer, an atomic concentration ratio of Si to Cu is greater than or equal to about 1.5% and less than or equal to about 5.5%, or greater than or equal to about 0.8% and less than or equal to about 2.8%, and a surface roughness is greater than or equal to about 0.334 and less than or equal to about 0.371, or greater than or equal to about 0.352 and less than or equal to about 0.395.