Chip-type coil component
Disclosed herein is a chip-type coil component that includes a magnetic element body, a coil pattern embedded in the magnetic element body, and a terminal electrode connected to the coil pattern and exposed to a mounting surface of the magnetic element body. A recessed part obtained by removing a part of the magnetic element body is formed in an upper surface of the magnetic element body positioned on a side opposite the mounting surface to function as a directional mark.
1 . A chip-type coil component comprising:
a magnetic element body;
a coil pattern embedded in the magnetic element body; and
a terminal electrode connected to the coil pattern and exposed to a mounting surface of the magnetic element body,
wherein a recessed part obtained by removing a part of the magnetic element body is formed in an upper surface of the magnetic element body positioned on a side opposite the mounting surface to function as a directional mark, and
wherein the magnetic element body includes a main body part in which the coil pattern is embedded and a surface layer part constituting the upper surface and having contrast with the main body part,
wherein the recessed part is formed so as to penetrate the surface layer part, and
wherein an average particle diameter of magnetic fillers contained in the surface layer part is smaller than an average particle diameter of magnetic fillers contained in the main body part.
2 . The chip-type coil component as claimed in claim 1 , further comprising a metal film embedded in the magnetic element body and positioned between the recessed part and the coil pattern.
3 . The chip-type coil component as claimed in claim 1 , wherein the recessed part is filled with a filling member having contrast with the upper surface of the magnetic element body.
4 . The chip-type coil component as claimed in claim 1 , wherein a surface roughness of a bottom surface of the recessed part differs from a surface roughness of the upper surface of the magnetic element body.