The invention provides a coil
assembly. The coil component includes: a body including a first surface and a second surface opposite to each other in a first direction and a third surface and a fourth surface opposite to each other in a second direction; a coil disposed in the main body; a first extraction
electrode connected to an outer end of the coil and protruding to the first surface; a second extraction
electrode connected to an inner end of the coil and protruding to the second surface; a first external
electrode disposed on the third surface, extending to the first surface, and connected to the first extraction electrode; and a second external electrode disposed on the third surface, extending to the second surface, and connected to the second extraction electrode, in which a thickness of each of the first extraction electrode and the second extraction electrode in the second direction is smaller than a thickness of the coil in the second direction.