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1. (WO2018029998) COMMON MODE CHOKE COIL AND MANUFACTURING METHOD THEREFOR

Pub. No.:    WO/2018/029998    International Application No.:    PCT/JP2017/023120
Publication Date: Fri Feb 16 00:59:59 CET 2018 International Filing Date: Sat Jun 24 01:59:59 CEST 2017
IPC: H01F 17/04
H01F 27/06
H01F 41/02
Applicants: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
パナソニックIPマネジメント株式会社
Inventors: FUJITA Tomohiro
藤田 知宏
YASUOKA Yuji
安岡 祐二
UENO Kenji
植野 兼司
HIGASHI Yoshiko
東 佳子
INUDUKA Tsutomu
犬塚 敦
OKUDA Kazuhiro
奥田 和弘
HARADA Ryohei
原田 亮平
Title: COMMON MODE CHOKE COIL AND MANUFACTURING METHOD THEREFOR
Abstract:
The purpose of the present invention is to provide a common mode choke coil with high impedance and low variation. Provided is a common mode choke coil comprising: a magnetic core (11) constituted by a winding core section (12) and a pair of collar sections (13) provided on both ends of the winding core section (12); external electrodes (18) formed in the respective collar sections (13); a pair of windings (17) wound around the winding core section (12), the ends of the pair of windings being drawn out to the external electrodes (18) and bonded thereto; and a magnetic plate (14) bonded to the pair of collar sections (13) with an adhesive agent (19). The magnetic plate (14) has bonding sections (15) bonded to the collar sections (13) and an opposing section (16) that opposes the winding core section (12). The bonding sections (15) of the magnetic plate have a surface roughness that is set to be less than the surface roughness of the opposing section (16).