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Patent Searching and Data


Title:
CHOKE COIL AND ITS MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP2005057104
Kind Code:
A
Abstract:

To provide a choke coil with less waste of materials and less variations of characteristics and to provide its manufacturing method.

The choke coil is provided with a columnar part 1 and a flange 3 having a flat part 4, a conductive layer in a helical shape is formed by laser beam irradiation on the surface of a base material 7 composed of an oxide magnetic material or an oxide dielectric, the conductive layer is connected to a cathode, and electroplating is executed. Thus, a metal is selectively deposited on the surface of the conductive layer, a helical conductor layer 2 is formed, the terminal of the helical conductor layer 2 is connected to a conductor film 5 formed at the flat part 4 of the flange 3 and thus a surface mounted terminal is attained.


Inventors:
ABE RYUZO
Application Number:
JP2003287412A
Publication Date:
March 03, 2005
Filing Date:
August 06, 2003
Export Citation:
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Assignee:
NEC TOKIN CORP
International Classes:
H01F41/04; H01F17/00; H01F17/02; H01F17/04; H01F27/29; (IPC1-7): H01F17/00; H01F17/02; H01F17/04; H01F27/29; H01F41/04