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US 6,650,529 B1Granted
Inductor and method of manufacturing same
AssigneeMurata Manufacturing Co., Ltd.
InventorsSatoshi Murata, Etsuji Yamamoto, Kenji Ozawa, Minoru Tamada, Yoshihiro Nishinaga
Life of this patent
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Abstract
An inductor includes a bar-shaped ferrite core and a spiral coil. The spiral coil is formed by removing a portion of a conductive film formed at least around the peripheral surface of the ferrite core. The surface of the ferrite core is impregnated with an insulating glass before the conductive film is formed. The content of the glass is preferably about 0.1% to about 20% by weight of the ferrite core. The ferrite core is preferably an Ni—Zn-based ferrite core.
Claims11
An inductor comprising:
- a ferrite core;
- an insulating glass impregnated or permeated into a surface of said ferrite core to form a mixture region including ferrite and said insulating glass mixed with each other and provided on and near the surface of the ferrite core;
- a conductive film formed on said mixture region provided on the surface of the ferrite core;
- and
- a spiral coil;
- wherein
- the spiral coil is formed by removing portions of the conductive film at least around a peripheral surface of the ferrite core.
4 more elements
Dependencies are inferred from the claim text.