EP 1089302 A1 20010404 - Substrate-mounted common mode choke coil and method of manufacture thereof
Title (en)
Substrate-mounted common mode choke coil and method of manufacture thereof
Title (de)
SMD-Gleichtaktdrosselspule und Verfahren zu deren Herstellung
Title (fr)
Bobine d'arrêt de mode commun pour montage en surface et son procédé de fabrication
Publication
Application
Priority
JP 28007999 A 19990930
Abstract (en)
A common mode choke coil has first and second spiral conductive layer elements electrically insulated from each other at a base. The base is made of a magnetic material or a dielectric material. at least one of the first and the second spiral conductive layer elements is formed in close contact with a surface of the base. The common mode choke coil has two spiral conductor layer elements at a base. Therefore, the common mode choke coil may be easily and economically provided that has high Q-characteristics or high impedance at a common mode and little fluctuation of resonance frequencies and inductance. <IMAGE>
IPC 1-7
IPC 8 full level
H01F 5/00 (2006.01); H01F 17/00 (2006.01); H01F 17/04 (2006.01); H01F 27/28 (2006.01); H01F 37/00 (2006.01); H01F 41/04 (2006.01)
CPC (source: EP KR)
H01F 5/00 (2013.01 - KR); H01F 17/0033 (2013.01 - EP); H01F 41/046 (2013.01 - EP); H01F 17/045 (2013.01 - EP); H01F 37/00 (2013.01 - EP); H01F 2017/0093 (2013.01 - EP); H01L 2924/0002 (2013.01 - EP)
Citation (search report)
- [XA] DE 888271 C 19530831 - SIEMENS AG
- [A] EP 0778593 A1 19970611 - CONS RIC MICROELETTRONICA [IT], et al
- [A] US 5692290 A 19971202 - MAMADA NOBUO [JP], et al
- [A] GB 2318218 A 19980415 - MATSUSHITA ELECTRIC IND CO LTD [JP]
- [A] FR 2763739 A3 19981127 - FRONTIER ELECTONICS CO LTD [TW]
- [A] PATENT ABSTRACTS OF JAPAN vol. 1999, no. 13 30 November 1999 (1999-11-30)
Citation (examination)
- JP H08335517 A 19961217 - MURATA MANUFACTURING CO
- EP 0698896 A1 19960228 - YOKOGAWA ELECTRIC CORP [JP]
- JP H02256214 A 19901017 - TOKIN CORP
- EP 1077455 A2 20010221 - MURATA MANUFACTURING CO [JP]
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 1089302 A1 20010404; CN 1199205 C 20050427; CN 1290947 A 20010411; EP 1347473 A1 20030924; JP 2001102222 A 20010413; KR 20010067263 A 20010712; SG 96573 A1 20030616; TW 508597 B 20021101
DOCDB simple family (application)
EP 00121450 A 20000929; CN 00129062 A 20000929; EP 03012309 A 20000929; JP 28007999 A 19990930; KR 20000057387 A 20000929; SG 200005601 A 20000929; TW 89120390 A 20000930