Title:
COIL COMPONENT, ELECTRONIC EQUIPMENT, METAL MAGNETIC POWDER AND SUPPORT DEVICE
Document Type and Number:
Japanese Patent JP2019176053
Kind Code:
A
Abstract:
To provide a coil component capable of obtaining a high saturation magnetic flux density and a high Q value even in the high frequency region of switching frequency.SOLUTION: In a coil component 100 including a coil 15 around which an insulation coated wire is wound, and a composite magnetic body 20 for embedding the wire, the composite magnetic body contains metal magnetic powder pulverizing a metal magnetic material, and binder resin, and the average particle size D(μm) of the metal magnetic powder satisfies following formula (1). D≤2.192×(Fmax)×ρ... (1), where Fmax is the use upper limit frequency (MHz) at which the Q value exceeds the maximum value and begins to decrease when the application frequency to the coil component is increased, and ρ is the electrical resistivity (μΩ cm) of the metal magnetic material.SELECTED DRAWING: Figure 1
Inventors:
KAWARAI MITSUGI
YAMADA SATORU
YAMADA SATORU
Application Number:
JP2018064082A
Publication Date:
October 10, 2019
Filing Date:
March 29, 2018
Export Citation:
Assignee:
SUMIDA CORP
International Classes:
H01F1/26; B22F1/05; B22F1/08; B22F1/102; H01F17/04; H01F27/255; H01F37/00
Domestic Patent References:
| JP2014067991A | 2014-04-17 | |||
| JPH01101608A | 1989-04-19 | |||
| JP2016225604A | 2016-12-28 | |||
| JP2016225589A | 2016-12-28 | |||
| JPH11353561A | 1999-12-24 | |||
| JP2007231415A | 2007-09-13 | |||
| JP2010053372A | 2010-03-11 |
Foreign References:
| WO2005020252A1 | 2005-03-03 | |||
| WO2008096795A1 | 2008-08-14 |
Attorney, Agent or Firm:
Shunsuke Umeda