Abstract: In a coil component, a shield layer is provided after the unevenness of the surface of an element body is smoothened by the surface being covered with an insulating layer. A Cu layer of the shield layer is provided on a smooth surface, and thus a thickness variation can be suppressed and the Cu layer can be formed with a substantially uniform thickness. In the coil component, a point where the shield layer is thin or a point lacking the shield layer is unlikely to be generated and a functional degradation of the shield layer is effectively suppressed.

Abstract: A coil component includes an insulator part and a coil part. The insulator part is constituted by an electrical insulation material, and is no more than 600 ?m long and no more than 600 ?m high. The coil part is wound around one axis and placed inside the insulator part. The coil part has an opening part constituted by straight line parts and curved line parts and whose shape as viewed from the one axis direction is an approximate quadrangle, wherein the line length of the curved line parts along the inner periphery of the opening part is 20% or more but no more than 40% of the line length of the inner periphery of the opening part. The coil component can satisfy both a size reduction need and the properties need.

Abstract: Inside a first case outer frame portion as an outer frame of the first case, a plurality of first core pieces and a partition to separate a pair of adjacent first core pieces among the plurality of first core pieces are disposed. The first case has a shape capable of accommodating at least a part of the second core piece. The first case outer frame portion includes a first case accommodating portion as a portion of the first case outer frame portion that is capable of accommodating the plurality of first core pieces, and a first case cover portion to cover a space inside the first case accommodating portion.

Abstract: A winding core includes a plurality of terminal electrodes on each flange portion, with a plurality of end surface electrode portions arranged at an interval on an outer end surface of the flange portion. To secure a predetermined interval between each of the plurality of end surface electrode portions, it is desirable for the dimension of each end surface electrode portion in a width direction to be as narrow as possible. Thus, a mask for forming an end surface base electrode layer, which is a base of an end surface electrode portion in a patterned state by sputtering, is improved to narrow a penetration passage through which particles of a film forming material pass. Thus, the dimension of the end surface base electrode layers, which are arranged at an interval in the width direction, in the width direction is less than 0.1 mm at the maximum value.

Abstract: An inductor includes: a first conductor layer including: a pair of first metal pieces; and a first conductor, wherein the first conductor is wound in a spiral shape in the same plane; a second conductor layer including: a pair of second metal pieces, wherein each of the pair of second metal pieces is bonded to a corresponding one of the pair of first metal pieces; and a second conductor, wherein the second conductor is wound in a spiral shape in the same plane, and the second conductor includes an inner circumferential side end portion bonded to an inner circumferential side end portion of the first conductor; a pair of electrodes each of which is bonded to a corresponding one of the pair of second metal pieces; and a sealing resin that covers the first conductor layer, the second conductor layer and the pair of electrodes.

Abstract: A coil device includes: a core including a winding core part and a flange part at an axial end part of the winding core part, a coil part including a first wire and a second wire wound around the winding core part, a first terminal electrode, formed on a flange part mounting surface and a lead-out part of the first wire is connected, and a second terminal electrode, formed on the mounting surface of the flange part spaced apart from the first terminal electrode and a lead-out part of the second wire is connected, in which the flange part includes a concave part, recessed from the upper surface of the flange part and from an outer end surface of the flange part in order to have bottoms. The coil device is easy to connect a wire and has excellent bonding strength even when the connecting part becomes the mounting surface.

Abstract: Disclosed is a core for a current transformer, which forms an upper core in a round shape, and is disposed at a position lower than the center of a power line having both ends of the upper core received, thereby minimizing the stress of a magnetic path, and increases the permeability, thereby enhancing the magnetic induction efficiency. The disclosed core for the current transformer includes an upper core curved in a semi-circular shape to have a receiving groove formed therein, and having both ends extended downwards to be disposed to be spaced apart from each other and a lower core disposed on the lower portion of the upper core, and having both ends extended upwards to be disposed to face both ends of the upper core.

Abstract: A method to form a plurality of inductors in a single process by placing multiple coils on a first magnetic sheet, and then stacking magnetic layers on the first magnetic sheet to encapsulate the coils so as to from a large magnetic body, and then cutting the large magnetic body into multiple inductors, wherein a terminal part of the coil disposed on the bottom surface of the magnetic body of the inductor is extended away from the axis of the coil and is entirely located at a same side of the axis of the coil.

Abstract: A coil component includes a frame-shaped magnetic core including wound sections facing each other, cylindrical coil conductors, and a holder made of an insulating material and holding the coil conductors and the magnetic core. The magnetic core extends through the coil conductors such that the coil conductors and the wound sections are associated with each other. The holder includes a first partition disposed between the magnetic core and a first winding wire end of each of the coil conductors, a second partition disposed between the magnetic core and a second winding wire end of each of the coil conductors, and a third partition disposed between the coil conductors. The first to third partitions are integrally formed.

Abstract: There is provided an internal-combustion-engine ignition coil apparatus in which an igniter in a connector assembly is contained in the case of the ignition coil apparatus, in which an adhesive bonds the igniter to a heat sink inserted into the case through an opening window of the case and an adhesive bonds the heat sink to the inner circumferential surface of the opening window, and in which the exposed portion of the heat sink is exposed to the outside of the case through the opening window.

Abstract: Provided are an inversely coupled inductor and a power module. The inversely coupled inductor includes a magnetic core, a first winding and a second winding, where a first passage is formed in the magnetic core; a part of the first winding and a part of the second winding pass through the first passage, and the first winding crosses with the second winding outside the first passage. The power supply module includes the above inversely coupled inductor, which is in turn stacked on, and electrically connected to, the packaged chip module. By arranging the two windings to cross with each other on the outside of the first passage of the magnetic core, the same type terminal (such as input pins or output pins) of the inversely coupled inductor can be located on the same side.

Abstract: A coil component includes a first outer magnetic body, a first outer insulator, a first inner magnetic body, an inner insulator, a second inner magnetic body, a second outer insulator, and a second outer magnetic body stacked sequentially, and a coil in the inner insulator and an internal magnetic body inside the coil. Volumes A, B, C, and D of the first and second outer insulators, the inner insulator, the coil, and the internal magnetic body, respectively, and volume E of the first outer magnetic body, the first inner magnetic body, the second inner magnetic body, and the second outer magnetic body satisfy 0.05?A?0.07, 0.2?B?0.4, 0.01?C?0.08, 0.03?D?0.05, and ?0.4?E?0.71, where 0.05B?C?0.2B and A+B+C+D+E=1.

Abstract: An inductor core includes: a tubular magnetic material body formed of magnetic material. The tubular 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; and a straight trunk portion which is disposed coaxially with the inclined portion, includes an outer peripheral surface which constitutes a peripheral surface of a cylindrical body, and is connected with the inclined portion. An arithmetic mean roughness Ra of a region in the outer peripheral surface of the straight trunk portion which region is in a vicinity of the other end, is smaller than an arithmetic mean roughness Ra of a region in the outer peripheral surface of the straight trunk portion which region is in a vicinity of the inclined portion.

Abstract: An electronic component comprises: a magnetic core having a flat base and a core, the flat base having a top, a bottom, and first and second opposite sides, the core is on the top; a winding having an edgewise coil including a wound flat wire and the core, the winding having two non-wound flat wires extending therefrom; and a magnetic exterior body covering the core and the edgewise coil. The two non-wound flat wires extend along the top, the first side, the bottom and then the second side, and the two non-wound flat wires are non-adhesively positioned around the flat base. The two non-wound flat wires on the bottom are externally exposed electrodes. The second side inclines towards the core. The two ends of the two non-wound flat wires are embedded into the magnetic exterior body to fix the two non-wound flat wires to the magnetic exterior body.

Abstract: An inductor includes a body, a coil pattern embedded in the body, a first external electrode and a second external electrode disposed on one surface of the body to be respectively connected to both ends of the coil pattern, and a support member disposed inside the body to support the coil pattern, wherein b/a?1.5, in which “a” denotes a distance from a central surface between top and bottom surfaces of the support member to a top surface of the body, and “b” denotes a distance from the central surface of the support member to a bottom surface of the body.

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

Abstract: Inductor structure is provided, including: n inductors, each inductor including a base plate, a cover plate, a first magnetic column and a coil wound around the first magnetic column, n?2; m second magnetic column(s), each second magnetic column is disposed between at least two inductors, and has a first terminal connected to the cover plates of the at least two inductors, and a second terminal connected to the base plates of the at least two inductors, m<n, wherein the inductor and the second magnetic column connected with and disposed on one side of the inductor constitute an inductor unit, and the n inductors and the m second magnetic column(s) constitute multiple inductor units, wherein each inductor unit includes at least one air gap. Multiple inductors arranged close to each other are integrated in a small space, and not affected by mutual magnetic influence, which helps to realize miniaturization.

Abstract: An inductor component includes a case; an annular core accommodated in the case; a coil wound around the core; and an electrode terminal attached to the case and connected to the coil. The electrode terminal includes a mounting surface portion that is disposed along an end surface of the core and that is to be mounted on a mount substrate, and a connection surface portion that is perpendicularly connected to the mounting surface portion and that is disposed along an outer peripheral surface of the core. The coil includes a plurality of pin members including a first linear pin member. A connection surface that is a part of an outer peripheral surface of the first linear pin member is in surface-contact with a first main surface of the connection surface portion in a state in which the connection surface is positioned parallel to the first main surface.

Abstract: A coil device includes a winding core, a wire, and a terminal fitting. The winding core is made of a magnetic material and includes a flange. The wire is wound around the winding core. The terminal fitting is attached to a part of an outer surface of the flange. The terminal fitting includes a contact part and a protrusion plate part. The contact part is contacted with the outer surface of the flange. The protrusion plate part is formed integrally with the contact part and protrudes away from the flange. The protrusion plate part includes a wire connection surface and a main mounting surface. A lead end of the wire is connected to the wire connection surface. The main mounting surface is located opposite to the wire connection surface and is connectable to an external circuit.

Abstract: In an exemplary embodiment, a coil component includes: a drum core 10 that includes a winding shaft 12 and flange parts 14a, 14b; a coil 40 that includes a winding part 42 and a pair of lead parts 44a, 44b led out from the winding part 42 toward a side face 22 of the flange part 14a and then bent onto the flange part 14a along the side face 22; and a pair of external electrodes 60a, 60b provided on the outer face 17a of the flange part 14a, and connected to the pair of lead parts 44a, 44b; wherein the shortest distance L4 between the side face 22 and the outermost periphery of the winding part 42 is shorter than the shortest distance L3 between a side face 24, opposite the side face 22, of the flange part 14a, and the outermost periphery of the winding part 42.