Coil component and circuit board having same
AssigneeTaiyo Yuden Co., Ltd.
InventorAtsushi Tanada
Life of this patent
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Abstract
A coil component includes: a magnetic base body formed by metal magnetic grains containing Fe, Si, and Cr, whose intensity ratio (IM/IH) of the strongest line intensity (IM) in a range of wavenumbers 650 to 750 cm−1, to the strongest line intensity (IH) in a range of wavenumbers 400 to 450 cm−1, in a Raman spectrum measured at the center part is 2 or higher, and which also has a part on the surface side of the center part where the intensity ratio (IM/IH) in a Raman spectrum is under 2; and a conductor placed inside or on the surface of the magnetic base body. The magnetic base body is constituted by a powder magnetic core made to have excellent electrical insulating property and high magnetic permeability.
Claims8
A coil component, comprising:
- a magnetic base body formed by metal magnetic grains containing Fe, Si, and Cr, whose intensity ratio (IM/IH) of a strongest line intensity (IM) in a range of wavenumbers 650 to 750 cm−1, to a strongest line intensity (IH) in a range of wavenumbers 400 to 450 cm−1, in a Raman spectrum measured at a center part of the magnetic base body is 2 or higher, and which also has a part on a surface side of the center part where the intensity ratio (IM/IH) in a Raman spectrum is under 2;
- and
- a conductor placed inside or on a surface of the magnetic base body.
Dependencies are inferred from the claim text.