A reactor includes a coil having a winding portion, and a magnetic core including a core piece having an inner core portion disposed inside the winding portion. The core piece is a compact made of a composite material that contains a magnetic powder and a resin. The reactor further includes: a first projection that is integrated with and projects from an outer peripheral face of the inner core portion, and comes into contact with an inner peripheral face of the winding portion so as to position the winding portion in a diameter direction of the winding portion, and a second projection that is integrated with and projects from the core piece at a position opposing an end face of the winding portion, and comes into contact with the end face of the winding portion so as to position the winding portion in an axial direction thereof.

A surface-mounted inductor including a coil having a wound part formed by winding a conductive wire and extended parts extended from an outer circumference of the wound part, a molded body containing the coil, constituted by a composite material containing a magnetic powder, and outer terminals connected to end portions of the extended parts disposed on a mounting surface. The wound part is contained within the molded body so that a winding axis is parallel to the mounting surface. The extended parts are extended toward the mounting surface side, each end portion of the extended parts are exposed from the surface thereof of the molded body. In the molded body, a density of a magnetic powder between the end portions of the extended parts on the mounting-side surface is lower than a density in the surface on the opposite side from the mounting surface.

According to an aspect of the present disclosure, a coil component includes: a body having a first surface and a second surface opposing each other in a first direction, and a plurality of side surfaces connecting the first surface and the second surface to each other; a substrate disposed in the body; at least one insulating pattern disposed on at least one corner where two of the plurality of side surfaces of the body are in contact with each other and exposed to the two side surfaces of the body; a coil unit including a coil pattern disposed on at least one surface of the substrate with a plurality of turns, and lead-out portions respectively exposed to opposing ones of the plurality of side surfaces of the body; and external electrodes disposed on the body and connected to the lead-out portions, respectively.

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 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 superconducting wire according to one embodiment of the present disclosure includes: a substrate having a first surface and a second surface; a superconducting layer having a third surface and a fourth surface; and respective coating layers. The second surface is opposite to the first surface. The fourth surface is opposite to the third surface. The superconducting layer is disposed on the substrate such that the third surface faces the second surface. The respective coating layers are disposed on the first surface and the fourth surface. Adhesion strength between the substrate and the coating layer disposed on the first surface is lower than adhesion strength between the superconducting layer and the coating layer disposed on the fourth surface.

The invention relates to the use of a carbonaceous coating for protection of a passive electrical component from attack by ammonia, wherein the carbonaceous coating is a sol-gel coating or a plasma-polymeric coating. This coating comprises a particular carbon content.

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 coil component includes a body having one surface and the other surface opposing each other, and one side surface and the other side surface, respectively connecting the one surface and the other surface to each other and opposing each other in one direction, a wound coil embedded in the body, a lead portion extending from an end of the wound coil to one surface of the body and disposed on the one surface of the body, an insulating layer covering one surface of the body and having an opening exposing a portion of the lead portion and extending in the one direction, and an external electrode disposed in the opening and connected to the lead portion. The insulating layer includes finishing portions respectively disposed on opposing sides of the opening in the one direction.