Coil component and board having the same
A coil component includes: an internal coil; a magnetic body having the internal coil embedded therein, and having first and second surfaces opposing each other in a first direction, third and fourth surfaces opposing each other in a second direction, and fifth and sixth surfaces opposing each other in a third direction; and external electrodes connected to the internal coil and disposed on outer surfaces of the magnetic body. 0<T 1 /T 2 <1, where T 1 is a thickness of the magnetic body at a central axis of the internal coil, and T 2 is a thickness of the magnetic body at a point B positioned to be spaced apart from the central axis of the internal coil by a predetermined distance.
1. A coil component comprising:
an internal coil;
a magnetic body having the internal coil embedded therein, and having first and second surfaces opposing each other in a first direction, third and fourth surfaces opposing each other in a second direction, and fifth and sixth surfaces opposing each other in a third direction; and
external electrodes connected to the internal coil and disposed on outer surfaces of the magnetic body,
wherein 0<T 1 /T 2 <1, where T 1 is a thickness of the magnetic body at a central axis of the internal coil, and T 2 is a thickness of the magnetic body at a point B positioned to be spaced apart from the central axis of the internal coil by a predetermined distance,
wherein the external electrodes are not disposed on any portion of the magnetic body where the thickness of the magnetic body is less than or equal to T 1 .
2. The coil component of claim 1 , wherein T 2 has a maximum value when the point B is positioned in a region in which the external electrode and the magnetic body overlap each other.
3. The coil component of claim 1 , wherein T 2 has a maximum value when the point B is positioned in a position most distant from the central axis of the internal coil.
4. The coil component of claim 1 , wherein T 1 /T 2 <0.96.
5. The coil component of claim 1 , wherein 0.90<T 1 /T 2 <0.96.
6. The coil component of claim 1 , wherein T 2 is within the range of 0.5 mm to 0.65 mm.
7. The coil component of claim 1 , wherein T 1 is larger than a length of the internal coil in the first direction.
8. The coil component of claim 1 , wherein the first surface includes a concave region based on the central axis of the internal coil.
9. The coil component of claim 1 , wherein the first surface has a concave form based on the central axis of the internal coil.
10. The coil component of claim 1 , wherein the second surface includes a concave region based on the central axis of the internal coil.
11. The coil component of claim 1 , wherein the second surface has a concave form based on the central axis of the internal coil.
12. The coil component of claim 1 , wherein the external electrodes include first and second external electrodes disposed to face each other in the second direction.
13. The coil component of claim 1 , wherein the first surface includes a concave region based on the central axis of the internal coil and the second surface has a flat shape.
14. The coil component of claim 1 , wherein the first and second surfaces each include a concave region based on the central axis of the internal coil.
15. The coil component of claim 1 , wherein the first and second surfaces each include a concave region based on the central axis of the internal coil, and the third and fourth surfaces have a length shorter than T 2 .
16. A board having a coil component, comprising:
a printed circuit board having a plurality of electrode pads disposed thereon; and
the coil component installed on the printed circuit board,
wherein the coil component includes:
an internal coil;
a magnetic body having the internal coil embedded therein, and having first and second surfaces opposing each other in a first direction, third and fourth surfaces opposing each other in a second direction, and fifth and sixth surfaces opposing each other in a third direction; and
external electrodes connected to the internal coil and disposed on outer surfaces of the magnetic body,
wherein 0<T 1 /T 2 <1, where T 1 is a thickness of the magnetic body at a central axis of the internal coil, and T 2 is a thickness of the magnetic body at a point B positioned to be spaced apart from the central axis of the internal coil by a predetermined distance,
wherein the external electrodes are not disposed on any portion of the magnetic body where the thickness of the magnetic body is less than or equal to T 1 .
17. The board having a coil component of claim 16 , wherein the first surface includes a concave region toward the second surface based on the central axis of the internal coil.
18. The board having a coil component of claim 16 , wherein the second surface includes a concave region toward the first surface based on the central axis of the internal coil.