Patent ID: 6965289
Filing Date: 2005-11-15
Classification: H01F

Abstract:
1. A common-mode choke coil comprising: a core including flanges disposed at both ends thereof and a winding section arranged between the flanges; a plurality of pieces of wire wound around the winding section of the core; electrodes disposed in the flanges of the core to be connected to ends of the pieces of wire; and a magnetic shield with a relative magnetic permeability that is smaller than that of the core arranged between the flanges of the core so as to cover the pieces of wire; wherein the magnetic shield includes a resin coating made of a resin material with a relative permeability of approximately 1; the resin coating is disposed on upper surfaces of the flanges of the core and an upper surface of the winding section of the core; and portions of side surfaces and a lower surface of the winding section of the core are provided without the resin coating.