Abstract: A coil device including a first conductor, a second conductor located inside the first conductor, a first inner core located inside the second conductor, and a second inner core located between the first conductor and the second conductor.

Abstract: A coil device 10 including a core having a core center part 23 for disposing roughly perpendicularly to a mounting surface and a flange 22 formed to one end in an axial direction of the core center part 23; a coil 30 disposed around the core center part 23; and an electrode 40 connected to a lead part 30a of the coil 30 and formed at least partially to a circumference surface of the flange 22; wherein the electrode 40 on the circumference surface of the flange 22 has a recessed part 420 which is recessed from an edge of the electrode 40 towards an outer end surface 221 of the flange 22.

Abstract: A coil device includes a magnetic core, a first wire and a second wire, and a first terminal electrode and a second terminal electrode. The magnetic core includes a winding core portion and a flange portion. A first end of the first wire is connected to a first wire-joint portion of the first terminal electrode. A first end of the second wire is connected to a second wire-joint portion of the first terminal electrode. A second end of the first wire is connected to a first wire joint portion of the second terminal electrode. A second end of the second wire is connected to a second wire-joint portion of the second terminal electrode. The first wire-joint portion and the second wire-joint portion are arranged away from each other. The first wire-joint portion and the second wire joint portion are arranged away from each other.

Abstract: The present invention provides a coil device which includes two coil elements in the same device and achieves an improved wire occupancy. The coil device includes a core including a winding core, and a winding wire part of which a first wire and a second wire are wound in a plurality of layers around the winding core, wherein the winding wire part includes a first part in which the first wire and the second wire of a same turn are wound adjacent to each other on a same layer, and a second part in which the first wire and the second wire of a same turn are wound in different layers without being adjacent to each other.

Abstract: A coil device including a magnetic core having a winding core around which a wire is wound to form a coil, and four terminal electrodes attached to an outer end surface of a flange formed at an end of the winding core along a winding axis. A recess is formed on the outer end surface of the flange, and each of the terminal electrodes includes a first rising piece loosely entering the recess, and a mounting piece integrally formed with the first rising piece and adhered to the outer end surface of the flange.

Abstract: A coil device includes a core, an inner coil portion, an outer coil portion, and an intermediate resin layer. The core includes a winding portion and a flange positioned at an end of the winding portion in an axial direction. The inner coil portion is constituted by winding a first wire around the winding portion. The outer coil portion is constituted by winding a second wire outside the inner coil portion. The intermediate resin layer exists between the inner coil portion and the outer coil portion.

Abstract: The coil component includes a magnetic core 130 and conductors 210 and 220. The magnetic core 130 includes through-holes that are made by grooves 111 and 112. The conductors 210 and 220 are provided in the grooves 111 and 112, respectively. The magnetic core 130 includes a nonmagnetic portion in which the grooves 111 and 112 are communicated, and a distance between the conductors 210 and 220 through the nonmagnetic portion is shorter than a distance between the conductors 210 and 220 in surfaces 110c and 110d in which the conductors 210 and 220 are exposed. Therefore, necessity to provide a large cavity in the magnetic core is eliminated, and a risk of the short circuit between terminal electrodes exposed in the surfaces 110c and 110d is also eliminated.

Abstract: The coil component includes a magnetic core 130 and conductors 210 and 220. The magnetic core 130 includes through-holes that are made by grooves 111 and 112. The conductors 210 and 220 are provided in the grooves 111 and 112, respectively. The magnetic core 130 includes a nonmagnetic portion in which the grooves 111 and 112 are communicated, and a distance between the conductors 210 and 220 through the nonmagnetic portion is shorter than a distance between the conductors 210 and 220 in surfaces 110c and 110d in which the conductors 210 and 220 are exposed. Therefore, necessity to provide a large cavity in the magnetic core is eliminated, and a risk of the short circuit between terminal electrodes exposed in the surfaces 110c and 110d is also eliminated.