A coil component includes a body, a support substrate embedded in the body, a coil portion including first and second lead-out portions disposed on one surface of a support substrate and spaced apart from each other, slit portions formed along edge portions between both end surfaces of the body, opposing each other, and a first surface of the body, respectively, and exposing the first and second lead-out portions to internal surfaces of the slit portions, respectively, plating prevention portions embedded in the first and second lead-out portions, respectively, and having first surfaces exposed to the internal surfaces of the slit portions, respectively, and first and second external electrodes disposed on the first surface of the body, spaced apart from each other, extending to the internal surfaces of the slit portions, respectively, and connected to the first and second lead-out portions, respectively.

A magnetic device includes a winding, and insulators by which the winding is surrounded. Each of the insulators is in contact with the winding. A gap exists between each two adjacent of the insulators in a winding direction of the winding.

A coil component includes a body and a coil conductor embedded in the body. The body includes a magnetic layer and a non-magnetic layer. The magnetic layer is formed of a composite material including a metal particle and a resin material, and the non-magnetic layer is arranged not to extend through a winding portion of the coil conductor or not to entirely extend through the body.

A coil component includes a body and a coil conductor embedded in the body. The body includes a magnetic layer and a non-magnetic layer. The magnetic layer is formed of a composite material including a metal particle and a resin material, and the non-magnetic layer is arranged not to extend through a winding portion of the coil conductor or not to entirely extend through the body.

A transformer includes first and second primary windings serially electrically connected in a primary-side series combination. The transformer further includes a secondary winding disposed between the first primary winding and the second primary winding. The transformer further includes first and second shielding windings serially electrically connected in a shielding series combination. The first shielding winding is disposed between the first primary winding and the secondary winding, and the second shielding winding is disposed between the second primary winding and the secondary winding.

A magnetic component for an electronic circuit includes first and second bobbins having respective core-receiving passageways. Each bobbin includes multiple slots with a winding insert in each slot. The winding inserts function as windings as well as guides for winding a coil of wire around the respective bobbins. The first and second bobbins are positioned on respective first and second legs of a magnetic core. The coils of wire are wound on the two bobbins in opposite directions such that the magnetic fluxes provided by the coils are in phase. The winding inserts have connection prongs that can be positioned in opposite direction such that the winding inserts of the first bobbin are connectable to a first printed circuit board and the winding inserts of the second bobbin are connectable to a second printed circuit board.

A coil component includes: a coil embedded in a substrate body and having a winding part constituted by a wound conductor; wherein the substrate body has: a first region sandwiched between one end surface of the substrate body and a plane parallel with the one end surface and running through a portion of a first external electrode farthest away from the one end surface; a second region sandwiched between another end of the substrate body and a plane parallel with the another end surface and running through a portion of a second external electrode farthest away from the another end surface; and a third region between the first region and the second region; and the winding part is provided in the third region, and also in the first region where it is wound by one turn or more.

A coil component is provided. The coil component includes a body having one surface and the other surface, opposing each other, and a wall surface connecting the one surface and the other surface, a coil portion embedded in the body and having an end exposed to the wall surface of the body, an external electrode including a connecting portion disposed on the wall surface of the body and connected to the end of the coil portion, and an extension extending from the connecting portion onto the one surface of the body, a first insulating layer covering the other surface of the body, and an identification portion passing through the first insulating layer and including the same material as a material of the external electrode.

A medium frequency transformer for a DC/DC converter includes: a core having an air gap and a coil surrounding a core section and having a plurality of windings; a medium voltage electric insulation, surrounding the coil each winding including a first and second termination, and a conductor wound around a portion of the core in at least one turn between the first and second termination; a plurality of terminals provided outside the insulation, each connected to a different first termination by one of a plurality of connectors, a channel extending from an outside of the insulation into and at least partially through said electric insulation, wherein the connectors extend through the channel and are insulated against one another by means of a low voltage insulation within the channel. The second terminations are connected to one another within or inside the insulation and connected to a second terminal outside of the insulation by a second connector.

A medium frequency transformer for a DC/DC converter includes: a core having an air gap and a coil surrounding a core section and having a plurality of windings; a medium voltage electric insulation, surrounding the coil each winding including a first and second termination, and a conductor wound around a portion of the core in at least one turn between the first and second termination; a plurality of terminals provided outside the insulation, each connected to a different first termination by one of a plurality of connectors, a channel extending from an outside of the insulation into and at least partially through said electric insulation, wherein the connectors extend through the channel and are insulated against one another by means of a low voltage insulation within the channel. The second terminations are connected to one another within or inside the insulation and connected to a second terminal outside of the insulation by a second connector.