Abstract: A transformer includes an insulation member, a high voltage part, and a low voltage part, the insulation member includes a first insulator, a second insulator, and a reference plane, the high voltage part is disposed on a first side of the reference plane, the low voltage part is disposed on a second side of the reference plane, the first insulator is disposed on the reference plane, at least a portion of the second insulator is located around the high voltage part, at least one air passage is formed by the insulation member, and at least a portion of the air passage is located within a height of the high voltage part in a normal direction of the reference plane.

Abstract: When a winding density represents the number of turns of a wire per unit length in a longitudinal direction of a core portion, a plurality of inductor regions having mutually different winding densities of the wire are arrayed in the longitudinal direction of the core portion, and a low-density inductor region with the winding density being relatively low is located between first and second high-density inductor regions with the winding densities being relatively high.

Abstract: A drum-like core of a coil component includes a winding core portion, a flange portion, and a terminal electrode formed on a mounting surface of the flange portion. The mounting surface of the flange portion includes a flat region and a lower region. The terminal electrode has a flat surface, the flat surface being parallel with the length direction in an outer surface of the terminal electrode, covering the mounting surface of the flange portion, and being longer than the flat region in maximum measurement extending in parallel with the length direction.

Abstract: A reactor includes an outer peripheral iron core, at least three iron cores, and a coil wound around the iron core. The reactor further includes an energizing portion connected to the coil and configured to be connected to a cable, and a cover provided to cover the energizing portion. At least one cutout formed in the cover is provided with at least one adjustment member configured to adjust an area of the cutout at least partially in the cover. The adjustment member is configured to be cut away from the cutout or to be bent with respect to a surface where the cutout is formed.

Abstract: A coil electronic component includes a body including a coil portion disposed therein, and including a plurality of magnetic particles, and external electrodes connected to the coil portion. The body includes an internal region and a protective layer disposed on a surface of the internal region. A first particle of the plurality of magnetic particles included in the protective layer includes an oxide film disposed on a surface of the first particle, and a second particle, having a size greater than a size of the first particle, of the plurality of magnetic particles includes a coating layer disposed on a surface of the second particle and having a composition different from a composition of the oxide film.

Abstract: The electronic component includes an element body having a mounting surface, an upper surface opposing the mounting surface, a first side surface, and a second side surface adjacent to the first side surface, and an outer conductor including a first portion extending along the first side surface and embedded in the element body so as to be exposed from the first side surface. The element body has a first chamfered portion at a corner portion connecting the upper surface and the first side surface, and a length of the first chamfered portion is longer than a thickness of the first portion of the outer conductor in a direction substantially orthogonal to the first side surface.

Abstract: A coil electrode of a coil component includes a plurality of lower wiring patterns arranged on a lower surface of an insulating layer; a plurality of upper wiring patterns arranged on an upper surface of the insulating layer; a plurality of inner conductors disposed at an inner peripheral side of the coil core, each inner conductor connecting one end of the corresponding one of the lower wiring patterns and one end of a corresponding one of the upper wiring patterns forming the pair with the lower wiring pattern; and a plurality of outer conductors disposed at an outer peripheral side of the coil core, each outer conductor connecting the other end of the corresponding one of the lower wiring patterns and the other end of the corresponding one of the upper wiring patterns adjacent to an upper wiring pattern forming the pair with the lower wiring pattern.

Abstract: An inductor built-in substrate includes a core substrate having an opening, a magnetic resin body having a through hole and including a magnetic resin filled in the opening of the core substrate, and a plating film formed in the through hole of the magnetic resin body and including an electrolytic plating film such that the electrolytic plating film is formed in contact with the magnetic resin body.

Abstract: An inductor core includes a tubular magnetic material body formed of a magnetic material. The magnetic material body includes an inclined portion including an inclined surface which constitutes a peripheral surface of a truncated cone having an outer diameter that increases from one end toward the other end of the tubular magnetic material body; a straight trunk portion which is disposed coaxially with the inclined portion and includes an outer peripheral surface which constitutes a peripheral surface of a cylindrical body which extends from the other end toward the one end and a flange portion which is provided between the inclined portion and the straight trunk portion and connects the inclined portion and the straight trunk portion. An outer peripheral surface of the flange portion has an outer diameter greater than the outer diameter of the inclined portion and an outer diameter of the straight trunk portion.

Abstract: A coil electronic component includes a support substrate; first and second coil patterns disposed on an upper surface and a lower surface of the support substrate, respectively; an encapsulant covering at least portions of the support substrate and the first and second coil patterns; and first and second external electrodes connected to the first and second coil patterns, respectively, and disposed on portions of a lower surface of the encapsulant, wherein at least one portion of a lower surface of the first coil pattern is exposed from the encapsulant, at least one portion of a lower surface of the second coil pattern is exposed from the encapsulant, and the first and second external electrodes are respectively connected to the at least one portion of the lower surface of the first coil pattern and the at least one portion of the lower surface of the second coil pattern.

Abstract: A coil component includes: a magnetic body part and a cover part covering one side of a magnetic layer part; and a coil part embedded in the magnetic body part. The magnetic body part is comprised of the following two types of layers: (A) an oblate soft magnetic grain-containing layer, and (B) a spherical grain-containing layer, wherein layer (A) extends over the entire range of the magnetic body part except for a portion including the coil part in a direction perpendicular to an axis direction of the coil part, layer (B) adjoins layer (A) in the axis direction. The cover part is constituted by multiple layers including one or more of layer(s) (A) and one or more of layer(s) (B) and extending over the entire range of the magnetic body part in the direction perpendicular to the axis direction.

Abstract: A transformer includes a magnetic structure and a set of coils. The magnetic structure includes a top member, a bottom member, and a plurality of legs extending between the top member and the bottom member. The plurality of legs include two outer legs. The set of coils is wound about the two outer legs of the magnetic structure and electrically coupled in series. In other examples, the magnetic structure includes a middle member positioned between the top member and the bottom and extending between the two outer legs. In such examples, a second set of coils is wound about the two outer legs of the magnetic structure and electrically coupled in series. Other example transformers and power converters such as multiphase interleaved power converters having transformers are also disclosed.

Abstract: A laminated electronic component includes a body including a magnetic layer containing magnetic particles; a coil provided within the body; and outer electrodes provided on a bottom surface of the body and each electrically connected to any one of end portions of the coil. In a cross-section perpendicular to the bottom surface of the body, a side surface of each outer electrode has a recess-shaped wedge portion, and a part of the body enters the wedge portion. At the bottom surface of the body, at least a part of a surface of each outer electrode is located outward of the bottom surface of the body.

Abstract: A method of manufacturing a wireless power reception apparatus includes: forming a lower tray that includes a thermally conductive material and accommodates and fix a coil winding; arranging a coil winding on the lower tray; forming a magnetic field shielding plate so as to accommodate and fix a plurality of magnetic tiles at predetermined intervals; forming a coupled member of a magnetic tiles-magnetic field shielding plate by arranging the plurality of magnetic tiles at the predetermined intervals on the magnetic field shielding plate; forming a thermally conductive polymer molding layer by applying a thermally conductive polymer molding solution to fill spaces between the coil winding and the coupled member of a magnetic tiles-magnetic field shielding plate and bonding the plurality of magnetic tiles and the coil winding such that the plurality of magnetic tiles are positioned over the coil winding; and curing the thermally conductive polymer molding layer.

Abstract: A single-phase reactor includes an outer peripheral iron core, at least four iron cores, which are in contact with or coupled to the inner surface of the outer peripheral iron core, and coils which are wound around at least two iron cores of the at least four iron cores. Gaps, which can be magnetically coupled, are each formed between two adjacent ones of the at least four iron cores, or are formed between the at least four iron cores and a central iron core positioned at the center of the outer peripheral iron core.

Abstract: A method of making a semiconductor device, includes: forming a first molding layer on a substrate; forming a first plurality of vias in the first molding layer; forming a first conductive line over the first molding layer, wherein the first conductive line is laterally disposed over the first molding layer and a first end of the conductive line aligns with and is electrically coupled to a first via of the first plurality of vias; forming a second molding layer above the first molding layer; and forming a second plurality of vias in the second molding layer, wherein a second via of the second plurality of vias aligns with and is electrically coupled to a second end of the conductive line, and wherein the second plurality of vias, the conductive line, and the first plurality of vias are electrically coupled to one another.

Abstract: An inductor includes a wire having a width W, and a first electrode and a second electrode continuous to each of both ends of the wire. The wire, the first electrode, and the second electrode are present on the same plane. The plane area S1 of the first electrode and the plane area S2 of the second electrode are a square value (W2) or more of the width W. An area in which the wire is disposed is positioned between the first electrode and the second electrode. The area has a length X in a longitudinal direction equal to a length L between the first electrode and the second electrode along a facing direction of the first electrode and the second electrode, and a length Y in a short-length direction in a direction perpendicular to the longitudinal direction. The length X in the longitudinal direction is 1.5 times or more of the length Y in the short-length direction.

Abstract: The present application discloses a magnetic component, comprising a magnetic core comprising at least one core column; a winding winded on the core column and comprising a first coil and a second coil adjacent to the first coil; a cladding member covered on at least a portion of an external surface of the first coil; and a positioning member extending from the cladding member and the first coil, wherein the second coil is pressed on the positioning member.

Abstract: A current converter with fluid or oil paper insulation for high voltage, with a head housing through which a primary conductor passes. A measurement device through which the primary conductor passes is arranged in the head housing. The primary conductor includes two different primary conductor types, more specifically an outer tube primary conductor as the first type and one or more inner conductor primary conductors as the second type. The outer tube primary conductor surrounds an interior that is designed to receive the inner conductor primary conductor, and the inner conductor primary conductors can be inserted into the interior. The outer tube primary conductor is used to transmit power and creates an encasement for the inner conductors. Only the outer tube primary conductor needs to be sealed with respect to the head housing. Inner conductors therefore can be easily inserted or re-moved subsequently, without the need for sealing measures.

Abstract: A three-phase reactor includes: an outer peripheral iron core; and at least three iron-core coils that come in contact with an inner surface of the outer peripheral iron core or are joined to the inner surface. The at least three iron-core coils include corresponding iron cores and corresponding coils wound around the iron cores, and gaps that can magnetically connect one iron-core coil of the at least three iron-core coils and an iron-core coil adjacent to the one iron-core coil to each other are formed between the one iron-core coil of the at least three iron-core coils and the iron-core coil adjacent to the one iron-core coil.