US Patent 7688173 Common mode choke coil

A common mode choke coil includes a core, external electrodes, a pair of windings, and a top plate. The core includes a winding core portion and a pair of flanges disposed at respective ends thereof. The external electrodes are provided at lower portions of the flanges. The pair of the windings is wound around the winding core portion of the core, and ends thereof are connected to the external electrodes, respectively. A lower surface and a side surface of the top plate are covered with a metal film and are adhered to upper surfaces of the flanges with an adhesive. Preferably, magnetic powder is mixed in the adhesive.