US 2006/0186979 A1 · MAGNETIC ELEMENT AND METHOD OF MANUFACTURING MAGNETIC ELEMENT

Abstract

There are provided a magnetic element capable of enhancing magnetic permeability of a magnetic member, improving a direct current superposition characteristic, and improving production efficiency and a method of manufacturing the magnetic element. The magnetic element includes a coil (30) formed of a conductor having an insulating film, a first core member (20) constituted of insulative soft magnetic ferrite and covering the coil (30), and a second core member (50) having soft magnetic metal powder as material and surrounded by the first core member (20). Furthermore, the magnetic element includes a third core member (40) which has soft magnetic metal powder as material and a higher filling ratio of the soft magnetic metal powder than the second core member 50 and is surrounded by the first core member (20).

Claims25

Dependent claims

1-13. (canceled)

Dependencies are inferred from the claim text.

Facts

Application

11/379,934Filed 24 Apr 2006

Priority

JP 2003-41225210 Dec 2003

Published

24 Aug 2006

Term ends

Not estimatedThe source records don’t support an estimate.

Classification16 codes

H01F 17/045
With magnetic core: with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
H01F 17/043
With magnetic core: with two, usually identical or nearly identical parts enclosing completely the coil
H01F 41/127
Insulating of windings: encapsulating or impregnating
H01F 27/292
Terminals; Tapping arrangements for signal inductances: surface mounted devices

Magnetic element and method of manufacturing magnetic element

Life of this patent

Magnetic element and method of manufacturing magnetic element

Life of this patent

Abstract

Claims25