Abstract: A multilayer coil array includes an element body including a magnetic layer; a first coil inside the element body and including first coil conductor layers in a stacking direction; a second coil inside the element body at a position further from a bottom surface of the element body than the first coil in the stacking direction and including second coil conductor layers in the stacking direction; first and second outer electrodes on the bottom surface of the element body and electrically connected to the first coil; third and fourth outer electrodes on the bottom surface of the element body and electrically connected to the second coil; a first lead-out conductor inside the element body and connecting, out of end portions of the first coil, an end portion of the first coil conductor layer closest to the second coil to the first outer electrode.

Abstract: A multilayer coil array includes an element body including a magnetic layer; a first coil inside the element body and including first coil conductor layers in a stacking direction; a second coil inside the element body at a position further from a bottom surface of the element body than the first coil in the stacking direction and including second coil conductor layers in the stacking direction; first and second outer electrodes on the bottom surface of the element body and electrically connected to the first coil; third and fourth outer electrodes on the bottom surface of the element body and electrically connected to the second coil; and a first lead-out conductor inside the element body and connecting, out of end portions of the first coil, an end portion of the first coil conductor layer closest to the second coil to the first outer electrode.

Abstract: A coil component having improved magnetic characteristics. The coil component includes a body having a substantially hexahedral shape and including a winding portion formed by winding a conductive wire based on a winding axis and a magnetic body portion; and paired metal terminals having joint portions to which first and second ends of the conductive wire are electrically connected. Each of the paired metal terminals extends outside an outer surface of the body parallel to the winding axis. Of four quadrants separated from one another by imaginary coordinate axes that are orthogonal to one another with the center of the body as the origin in plan view in the winding axis direction, more than half the area of one of the joint portions is disposed in a quadrant not adjacent to the quadrant in which more than half the area of the other joint portion is disposed.

Abstract: A balun includes a core having a plurality of through holes and a plurality of conductors wound around a portion between two through holes in the core and constituting first and second coils. The conductors include parallel lines in which a first conductor, a second conductor, and a third conductor are arranged in substantially parallel in this order and are integrated so as to include planar sections. The first and second coils include a continuous portion of first, second, and third winding portions. The first winding portion is formed of the wound second conductor. The second winding portion is formed of the parallel lines wound such that the planar sections cover the first winding portion. The third winding portion is formed of the second conductor wound on the second winding portion. The first coil includes a center tap connected to end portions of the first and third conductors.

Abstract: A balun includes a core having a plurality of through holes and a plurality of conductors wound around a portion between two through holes in the core and constituting first and second coils. The conductors include parallel lines in which a first conductor, a second conductor, and a third conductor are arranged in substantially parallel in this order and are integrated so as to include planar sections. The first and second coils include a continuous portion of first, second, and third winding portions. The first winding portion is formed of the wound second conductor. The second winding portion is formed of the parallel lines wound such that the planar sections cover the first winding portion. The third winding portion is formed of the second conductor wound on the second winding portion. The first coil includes a center tap connected to end portions of the first and third conductors.