公开(公告)号：US20250104925A1

公开(公告)日：2025-03-27

申请号：US18804885

申请日：2024-08-14

Applicant: TDK Corporation

Inventor： Toshihiro Iguchi ,  Masaki Hara ,  Ryota Namiki ,  Ayako Sato ,  Kenya Tamaki ,  Kazunori Oshima

IPC: H01G4/38 ,  H01G4/012 ,  H01G4/248 ,  H01G4/30

Abstract: An electronic component includes: a substrate; a plurality of multilayer capacitors mounted on a first main surface of the substrate; and a sealing part formed of a resin and sealing the plurality of multilayer capacitors. A first external electrode and a second external electrode of the multilayer capacitor are mounted on the substrate by solder. At least a part of adjacent multilayer capacitors overlaps each other when viewed from a direction in which a pair of side surfaces of an element body are opposed to each other, the direction being along the first main surface of the substrate. In the adjacent multilayer capacitors, stacking directions of a plurality of internal electrodes are the same, and a distance between the adjacent multilayer capacitors is ½ or less of a height of the multilayer capacitor mounted on the substrate.

公开(公告)号：US10284017B2

公开(公告)日：2019-05-07

申请号：US15254331

申请日：2016-09-01

Applicant: TDK CORPORATION

Inventor： Narutoshi Fukuzawa ,  Ayako Sato ,  Tsunehiro Saen

IPC: H01F27/42 ,  H01F37/00 ,  H01F38/00 ,  H02J50/12 ,  H02J50/70 ,  H02J50/90

Abstract: A coil device and a wireless power transmission device which can detect the happened open fault or short fault reliably in any one of the plurality of capacitor elements constituting the capacitor circuit. Coil device includes coil for power transmission, capacitor circuit connected to coil for power transmission and having a plurality of capacitor elements, conductive metal portion which is disposed close to coil for power transmission, and measuring portion for measuring a voltage or a current generated in metal portion.