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1. (WO2018185989) COIL COMPONENT CORE AND COIL COMPONENT

Pub. No.:    WO/2018/185989    International Application No.:    PCT/JP2018/000396
Publication Date: Fri Oct 12 01:59:59 CEST 2018 International Filing Date: Fri Jan 12 00:59:59 CET 2018
IPC: H01F 27/24
H01F 37/00
Applicants: SUMIDA CORPORATION
スミダコーポレーション株式会社
Inventors: OTSUKA Tsutomu
大塚 努
Title: COIL COMPONENT CORE AND COIL COMPONENT
Abstract:
[Problem] To provide a coil component core having a structure capable of achieving both high DC superposition characteristics and suppression of leakage magnetic flux. [Solution] A coil component core 30 comprises an annular core body 10 having a magnetic gap 15, and a gap core 20 disposed in the magnetic gap 15. The average value of the relative permeability in the entire space of the magnetic gap 15 is lower than the relative permeability of the core body 10. The gap core 20 has a first portion 21 having a relative permeability higher than the average value, and the first portion 21 is disposed at least in a portion of a peripheral section of the magnetic gap 15.