Coil component magnetic base
First Claim
Patent Images
1. A coil component comprising:
- a magnetic portion that includes metal particles and a resin material, the metal particles being formed of a metal material, the metal material being at least one material selected from iron, Fe—
Si alloys, Fe—
Si—
Cr alloys, and Fe—
Si—
Al alloys;
a coil conductor embedded in the magnetic portion and having a core portion, the coil conductor being wound in an α
-winding form; and
outer electrodes electrically connected to the coil conductor,wherein the magnetic portion includes a magnetic base having a protrusion portion, the protrusion portion extending from the magnetic base and including an end positioned a spaced distance from the magnetic base, and a magnetic outer coating,a protective layer containing Ti and resin is disposed on the magnetic portion,a filling factor of the metal particles in the magnetic base is 65% or more, and a filling factor of the metal particles in the magnetic outer coating is 50% or more,the coil conductor is disposed on the magnetic base such that the protrusion portion is located in the core portion,the magnetic outer coating covers the coil conductor, the magnetic base, and the end of the protrusion portion,the bottom surface of the magnetic base includes a recessed portion in an area opposite to the protrusion portion,a length (L) of the coil component is about 0.9 mm or more and 2.2 mm or less, anda width (W) of the coil component is about 0.6 mm or more and 1.8 mm or less.
1 Assignment
0 Petitions
Accused Products
Abstract
A coil component includes a magnetic portion that includes metal particles and a resin material, a coil conductor embedded in the magnetic portion and having a core portion, and outer electrodes electrically connected to the coil conductor. The magnetic portion includes a magnetic outer coating and a magnetic base having a protrusion portion. The coil conductor is disposed on the magnetic base such that the protrusion portion is located in the core portion. The magnetic outer coating is disposed so as to cover the coil conductor, and the bottom surface of the magnetic base includes a recessed portion in an area opposite to the protrusion portion.
29 Citations
20 Claims
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1. A coil component comprising:
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a magnetic portion that includes metal particles and a resin material, the metal particles being formed of a metal material, the metal material being at least one material selected from iron, Fe—
Si alloys, Fe—
Si—
Cr alloys, and Fe—
Si—
Al alloys;a coil conductor embedded in the magnetic portion and having a core portion, the coil conductor being wound in an α
-winding form; andouter electrodes electrically connected to the coil conductor, wherein the magnetic portion includes a magnetic base having a protrusion portion, the protrusion portion extending from the magnetic base and including an end positioned a spaced distance from the magnetic base, and a magnetic outer coating, a protective layer containing Ti and resin is disposed on the magnetic portion, a filling factor of the metal particles in the magnetic base is 65% or more, and a filling factor of the metal particles in the magnetic outer coating is 50% or more, the coil conductor is disposed on the magnetic base such that the protrusion portion is located in the core portion, the magnetic outer coating covers the coil conductor, the magnetic base, and the end of the protrusion portion, the bottom surface of the magnetic base includes a recessed portion in an area opposite to the protrusion portion, a length (L) of the coil component is about 0.9 mm or more and 2.2 mm or less, and a width (W) of the coil component is about 0.6 mm or more and 1.8 mm or less. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18)
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16. A coil component comprising:
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a magnetic portion that includes metal particles and a resin material, the metal particles being formed of a metal material, the metal material being at least one material selected from iron, Fe—
Si alloys, Fe—
Si—
Cr alloys, and Fe—
Si—
Al alloys;a coil conductor made of a wire, embedded in the magnetic portion, and having a core portion, the core portion being a cavity surrounded by the wire, the coil conductor being wound in an α
-winding form; andouter electrodes electrically connected to the coil conductor, wherein the magnetic portion includes a magnetic base having a protrusion portion, the protrusion portion extending from the magnetic base and including an end positioned a spaced distance from the magnetic base, and a magnetic outer coating, a protective layer containing Ti and resin is disposed on the magnetic portion, a filling factor of the metal particles in the magnetic base is 65% or more, and a filling factor of the metal particles in the magnetic outer coating is 50% or more, the coil conductor is disposed on the magnetic base such that the protrusion portion is located in the core portion, the magnetic outer coating is disposed so as to cover the coil conductor, and the end of the protrusion portion, the bottom surface of the magnetic base includes a recessed portion in an area opposite to the protrusion portion, the filling factor of the metal particles in the magnetic base is higher than the filling factor of the metal particles in the outer coating, the filling factor of the metal particles in the magnetic base is from 65% to 85%, the filling factor of the metal particles in the outer coating is from 50% to 75%, a length (L) of the coil component is about 0.9 mm or more and 2.2 mm or less, a width (W) of the coil component is about 0.6 mm or more and 1.8 mm or less, the protrusion portion is in a shape of an elliptic cylinder having a major axis and a minor axis, and a ratio of the major axis to the minor axis is in a range of 1.2 and 1.7. - View Dependent Claims (19, 20)
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Specification