Chip electronic component
A chip electronic component includes a magnetic body containing magnetic metal powder, internal coil parts embedded in the magnetic body, and an anti-plating layer disposed on at least one of upper and lower surfaces of the magnetic body. The anti-plating layer contains magnetic metal powder having particle sizes within the range of 0.1 μm to 10 μm.
1. A chip electronic component comprising:
a magnetic body containing a magnetic metal powder;
internal coil parts embedded in the magnetic body; and
an anti-plating layer containing a magnetic metal powder having particle sizes within the range of 0.1 μm to 10 μm and disposed on at least one of upper and lower surfaces of the magnetic body,
wherein the median diameter of the metal powder contained in the anti-plating layer is less than the median diameter of the metal powder contained in the magnetic body.
2. The chip electronic component of claim 1 , wherein when a thickness of the magnetic body is t 1 and a thickness of the anti-plating layer is t 2 , t 2 /t 1 is 0.25 or less.
3. The chip electronic component of claim 1 , wherein the anti-plating layer has a thickness of 5 μm to 20 μm.
4. The chip electronic component of claim 1 , wherein the anti-plating layer has an insulation resistance of 700 MΩ or more.
5. The chip electronic component of claim 1 , wherein the anti-plating layer further contains a thermosetting resin, and
a content of the thermosetting resin contained in the anti-plating layer is 15 wt % to 30 wt %.
6. The chip electronic component of claim 1 , wherein the anti-plating layer has a magnetic permeability of 15 H/m to 30 H/m.
7. The chip electronic component of claim 1 , wherein the anti-plating layer has a surface roughness less than 0.5 μm.
8. The chip electronic component of claim 1 , wherein the magnetic body contains a first magnetic metal powder and a second magnetic metal powder having an average particle size smaller than an average particle size of the first magnetic metal powder, and
the first magnetic metal powder has particle sizes within the range of 10 μm to 50 μm and the second magnetic metal powder has particle sizes within the range of 0.5 μm to 6 μm.
9. The chip electronic component of claim 8 , wherein the first and second magnetic metal powders are mixed with each other at a weight ratio of 8:2 to 5:5.
10. The chip electronic component of claim 1 , wherein the magnetic body has a magnetic permeability of 31 H/m to 50 H/m.
11. The chip electronic component of claim 1 , further comprising external electrodes disposed on outer surfaces of the magnetic body to be connected to end portions of the internal coil parts,
wherein the external electrodes include electrode layers and plating layers formed on the electrode layers, respectively.
12. The chip electronic component of claim 11 , wherein the plating layer contains one or more selected from a group consisting of nickel (Ni), copper (Cu), and tin (Sn).
13. A chip electronic component comprising:
a magnetic body containing a magnetic metal powder;
internal coil parts embedded in the magnetic body; and
a high insulation resistance layer containing a magnetic metal powder and disposed on at least one of upper and lower surfaces of the magnetic body,
wherein the median diameter of the metal powder contained in the high insulation resistance layer is less than the median diameter of the metal powder contained in the magnetic body, and the high insulation resistance layer has an insulation resistance of 700 MΩ or more.
14. The chip electronic component of claim 13 , wherein the high insulation resistance layer contains a magnetic metal powder having particle sizes within the range of 0.1 μm to 10 μm.
15. The chip electronic component of claim 13 , wherein when a thickness of the magnetic body is t 1 and a thickness of the high insulation resistance layer is t 2 , t 2 /t 1 is 0.25 or less.