Abstract: The present application provides an internal combustion engine ignition device such that irregular winding of a primary coil and a tertiary coil and an increase in a number of components can be restricted. A recessed portion that forms a tertiary coil winding portion is provided in a portion of a surface portion of a trunk portion of a primary bobbin, a tertiary coil is formed winding a copper wire around the recessed portion with no gap, and a primary coil is formed by winding a copper wire around a surface portion of the tertiary coil and a trunk portion surface portion of the primary bobbin in which the recessed portion is not formed, that is, a whole region of the trunk portion positioned between flanges after the tertiary coil is formed.

Abstract: One object of the present invention is to provide a coil element having a reduced thickness but is less prone to be broken. The coil element according to an embodiment of the present invention has a rectangular parallelepiped shape and has a principal surface including long sides and short sides. The coil element includes a drum core, a winding wound around the drum core, a first external electrode electrically connected to one end of the winding, and a second external electrode electrically connected to the other end of the winding. The drum core in the embodiment includes a first flange, a second flange, and a winding core connecting between the first flange and the second flange. The winding core extends along the short sides of the principal surface.

Abstract: A mounting substrate includes a resin layer and a first conductor including a contact surface in contact with the resin layer. The first conductor includes a first surface facing toward the mounting surface and a second surface on a side opposite to the first surface and extends in a direction parallel or substantially parallel to the mounting surface. The first conductor has a difference of a maximum value and a minimum value of a distance between the first surface and the mounting surface smaller than a difference of a maximum value and a minimum value of a distance between the second surface and the mounting surface. The resin layer includes a resin wall portion surrounding an opening portion partially exposing the first conductor on the mounting surface side, and the first conductor includes an exposed portion defining a mounting electrode.

Abstract: An electronic component comprising: a body; a conductive wire in the body; and a first lead comprising a first part disposed on a first surface of the body and a second part disposed on a second surface of the body, wherein the second part of the first lead comprises a first protrusion portion and a second protrusion portion spaced apart from each other, wherein a first portion of a first terminal part of the conductive wire is disposed between the first protrusion portion and the second part of the first lead disposed on the second surface of the body, and a second portion of the first terminal part of the conductive wire is disposed between the second protrusion portion and the second part of the first lead disposed on the second surface of the body.

Abstract: A multiple parallel-connected resonant converter, an inductor-integrated magnetic element and a transformer-integrated magnetic element are provided. The multiple parallel-connected resonant converter includes a first and a second converters. The first converter having a first input and output end includes a first inductor, a first transformer and a first capacitor connected in series. The second converter having a second input and output end includes a second inductor, a second transformer and a second capacitor connected in series. The second output end is connected with the first output end in parallel. The first and second inductor are integrated in a first magnetic element, the first magnetic element includes a first and second side column, and a first and second central column. The first inductor includes a first coil positioned around the first central column and the second inductor includes a second coil positioned around the second central column.

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.

Abstract: A leakage transformer includes a secondary coil wound around a leg member of a core, and a primary coil wound around the leg member outside of the secondary coil. Between the primary coil and the secondary coil, (i) spacers of non-magnetic members and (ii) bypass cores that are magnetic members to induce therein a portion of magnetic flux generated in the core are arranged. The bypass cores are arranged with gaps therebetween in a direction of the internally induced magnetic flux. A total value of the gaps between the bypass cores is determined in accordance with a target value of leakage inductance. A maximum value of the gaps between the bypass cores is less than or equal to a value obtained by multiplying a minimum value of gaps between the bypass cores and each of the primary coil and the secondary coil by a positive coefficient less than one.

Abstract: A reactor includes a bobbin around which a coil is wound, and a core extending through the bobbin. The bobbin has a tubular shape. The core has a quadrangular prism shape. The core includes a distal end surface and a pair of side surfaces perpendicular to the distal end surface. The side surfaces are opposite surfaces of the core. The bobbin includes projections respectively provided on inner surfaces of the bobbin. The inner surfaces of the bobbin respectively face the side surfaces of the core. The projections extend in an axial direction of a tubular portion of the bobbin. The projections are in contact with the core.

Abstract: Disclosed herein is a pulse transformer that includes first to fourth terminal electrodes provided on the first flange part, fifth to eighth terminal electrodes provided on the second flange part, first and second wires wound around the winding core part having one end connected to the first and second terminal electrodes and other end connected to the seventh and eighth terminal electrodes, and third and fourth wire wound around the winding core part having one end connected to third and fourth terminal electrodes and other end connected to the fifth and sixth terminal electrodes. A winding direction of the first and third wires is opposite to a winding direction of the second and fourth wires.

Abstract: A method for producing an electronic component includes a step of preparing a porous base body containing a ceramic and including an inner conductor disposed in the body; and a step of impregnating the base body with a resin emulsion.

Abstract: A coil component includes a body having a bottom surface and a top surface opposing each other in one direction, and a plurality of walls each connecting the bottom surface to the top surface of the body; a coil portion buried in the body, and having first and second lead-out portions; first and second external electrodes disposed on the bottom surface of the body and spaced apart from each other; via electrodes penetrating through the body and connecting the first and second lead-out portions and the first and second external electrodes to each other; a third external electrode including a pad portion disposed on the bottom surface of the body, and a connection portion extending to portions of the plurality of walls of the body, and spaced apart from the first and second external electrodes; a shielding layer including a cap portion disposed on the other surface of the body, and side wall portions respectively disposed on the plurality of walls of the body, and connected to the third external electrode; and

Abstract: A multiple parallel-connected resonant converter, an inductor-integrated magnetic element and a transformer-integrated magnetic element are provided. The multiple parallel-connected resonant converter includes a first and a second converters. The first converter having a first input and output end includes a first inductor, a first transformer and a first capacitor connected in series. The second converter having a second input and output end includes a second inductor, a second transformer and a second capacitor connected in series. The second output end is connected with the first output end in parallel. The first and second inductor are integrated in a first magnetic element, the first magnetic element includes a first and second side column, and a first and second central column. The first inductor includes a first coil positioned around the first central column and the second inductor includes a second coil positioned around the second central column.

Abstract: A bent shape that projects when viewed in an axis direction of a winding core part is given to each top surface of a first flange part and a second flange part of a drum-like core. The top surface and a lower principal surface of a plate-like core are closest to each other in a portion where a vertex of the bent shape is positioned.

Abstract: A highly reliable winding part is provided which is capable of providing insulation with reliability. A core is attached to a bobbin along a first direction. First terminals and second terminals are disposed along the first direction. A first terminal group and a second terminal group are disposed with the core interposed between the groups. A first insulation portion or a recess along a second direction that is not parallel to the first direction is provided between the first terminals and the second terminals, and a second insulation portion or a core groove along the first direction is provided between the first terminal group and the second terminal group.

Abstract: First terminals connected to a first winding and second terminals connected to a second winding that is required to be insulated from the first winding are protruded from a bobbin, at least two terminals for each winding. The terminals are sequentially disposed in a row as “a first terminal, a first terminal, a second terminal, and a second terminal” in that order. A winding part is provided, of which mounting area can be reduced even when an automatic winding machine winds a plurality of windings at a time.

Abstract: Provided is a print circuit board including: a ground conductor layer; a pair of strip conductors extending along a first orientation; a first resonator conductor three-dimensionally intersecting with the pair of strip conductors along a second orientation; a pair of first via holes connecting the first resonator conductor and the ground conductor layer; and a dielectric layer including the first resonator conductor therein, and being disposed between the ground conductor layer and the pair of the strip conductors. A distance H1 between the pair of strip conductors and the ground conductor layer is twice or more a distance H2 between the pair of strip conductors and the first resonator conductor, and a line length L of the first resonator conductor is 0.4 wavelength or more and 0.6 wavelength or less at a frequency corresponding to the bit rate.

Abstract: A coil form with a low inter-winding capacitance is disclosed including a bobbin formed from an electrically insulating material and including a tube section shaped wall. A coil is mechanically supported by the bobbin and includes a first plurality of conductor windings on the outside of the wall and a second plurality of conductor windings on the inside of the wall. Furthermore, a transformer with such a coil form as any of its primary or secondary windings is disclosed.

Abstract: An apparatus and method for winding electrical coils (electromagnets) is described. A self-propelled and self-referencing winding vehicle uses features on a winding bobbin to guide the direction and/or orientation of the vehicle, while laying electrical conductor material (e.g., high-temperature superconducting (HTS) tapes) as it traverses the bobbin. The vehicle may wind electrical coils with complex shapes. In some embodiments, the self-propelled, self-referencing (SPSR) vehicle may perform other magnet fabrication and assembly procedures.

Abstract: An output wire joining structure of a winding seat for a transformer or an inductor is disclosed. The winding seat includes a winding portion and a support portion. The winding portion is disposed on top of the support portion for winding a coil. Two sides of the support portion are provided with pin holders for insertion of output wires of the coil. At least one joining plate is disposed beneath the pin holders corresponding in position to the output wires. The output wires of the coil and metal pins of the pin holders are soldered to the joining plate respectively, so that the output wires and the metal pins are quickly soldered and fixed to form a connection, which has the advantages of increasing the rated current and facilitating the operation.

Abstract: A manufacturing method for an electronic component includes: a step of forming an insulating layer on an outer electrode body so as to cover the outer electrode body, the outer electrode body being formed on a chip element which forms the electronic component; and a step of removing the insulating layer in a predetermined region of the outer electrode body by applying laser light to the insulating layer in the predetermined region so as to expose the predetermined region. The insulating layer has a higher absorption coefficient for the laser light than a material forming a surface of the outer electrode body.

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: A coil component includes: a body having one surface and the other surface opposing each other in one direction; a coil portion including a coil pattern embedded in the body and having at least one turn in the one direction; an insulating layer surrounding the body; an external electrode connected to the coil portion, penetrating through he insulating layer, and disposed on the one surface of the body; a shielding layer disposed on the insulating layer and disposed at least on the other surface of the body opposing the one surface of the body; and a seed layer disposed between the insulating layer and the shielding layer.

Abstract: The invention provides a transformer and a transformer bobbin thereof. The transformer bobbin includes a winding part, a first wire outlet part and a second wire outlet part; the second wire outlet part is provided with an inclined guiding surface facing the winding part, a first partition plate arranged on the inclined guiding surface and a wire avoiding groove arranged on one side of the inclined guiding surface; the inclined guiding surface is divided into a first wire outlet area and a second wire outlet area, the wire avoiding groove is only arranged in the first wire outlet area, and the first partition plate is formed with a wire supporting notch. Therefore, it is not necessary to add an insulation sleeve to windings at the same wire outlet part to achieve winding isolation, whereby windings on the transformer is automatically wound by a machine.

Abstract: The invention comprises an inductor, such as used in processing transmission of a 3-phase power system. The inductor comprises a flat/rectangular winding with a narrow edge of the flat winding wound around a core, where the width of the winding exceeds three times the height of the inductor facing edge of the winding. The inductor optionally comprises a distributed gap particle core and/or is wound in parallel with multiple windings. Optionally, the inductor is used as part of an equal coupling common mode electrical system for processing the 3-phase transmission and/or a high frequency inverter comprising a switching device, such as a silicon carbide metal-oxide-semiconductor field-effect transistor.

Abstract: A coil component includes a body including an internal coil and first and second external electrodes respectively disposed on outer surfaces of the body. The first and second external electrodes extend from a lower surface of the body to first and second end surfaces connected thereto, respectively. The first external electrode on the first end surface and the second external electrode on the second end surface each include a base portion and an extending portion extending from the base portion in a height direction, having a predetermined height, and having a width narrower than a width of the base portion.

Abstract: Disclosed herein is a pulse transformer that includes: a drum core including a winding core part and first and second flange parts provided at both ends of the winding core part in an axial direction; a plurality of wires wound around the winding core part; and a plate-like core fixed to the drum core so as to face a first surface of the first flange part that is parallel to the axial direction and a second surface of the second flange part that is parallel to the axial direction. A value of S1/S2 is 0.19 or more and 0.47 or less, where an area of the cross section of the winding core part that is perpendicular to the axial direction is S1 and a facing area between the plate-like core and the first or second surface is S2.

Abstract: An assembly for power converting includes a circuit board, a power switching circuit mounted on the circuit board, an inductor coil that includes a winding and two ends, a magnetic core that is surrounded by the winding of the inductor coil, and a magnetic mixture that encapsulates the circuit board, the power switching circuit, the inductor coil and the magnetic core. The winding of the inductor coil is stacked above the power switching circuit and is sufficiently large to fill up a size of the assembly.

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: According to an embodiment, an interposer structure comprises a top surface, a bottom surface facing away from the top surface; an inner sidewall extending from the top surface to the bottom surface, and forming an inner space accommodating one or more electronic components mounted on a circuit board of an electronic device; and an outer sidewall extending from the top surface to the bottom surface, and facing away from the inner sidewall, wherein the outer sidewall includes: a first area having a conductive member formed from the top surface to the bottom surface; and a second area having a conductive member formed from the top surface to a first position and a non-conductive member formed from the first position to the bottom surface.

Abstract: A power supply to provide welding power. The power supply may include a first printed circuit board (PCB) disposed on a primary side of the power supply; a first set of components mounted on the first PCB; a second PCB disposed on a secondary side of the power supply; a second set of components mounted on the second PCB; a transformer stage coupled to the first PCB and to the second PCB, wherein the first PCB and the second PCB are independently detachable from the power supply.

Abstract: An inductor includes a coil including a winding portion and a lead-out portion, a body constituted by a magnetic member and enclosing the coil, a protection layer disposed on a surface of the body, and an outer electrode. The body has a bottom surface, a top surface, two end surfaces, two side surfaces, and first and second R-chamfered sections. The outer electrode includes first and second electrode regions. The first electrode region is located on the bottom surface and is electrically connected to the lead-out portion. The second electrode region is located on the protection layer on each end surface. The surface roughness of part of the bottom surface where the first electrode region is disposed is greater than that of the protection layer on each of the end surfaces where the second electrode region is disposed.

Abstract: An object of the present disclosure is to provide a common mode choke coil with high impedance and small variation. A common mode choke coil includes magnetic core having winding core part and a pair of flange parts provided on opposite ends of winding core part, external electrodes formed on each of flange parts, a pair of windings wound on winding core part, with each of the ends being drawn out and joined to one of external electrodes, and magnetic plate joined to the pair of flange parts with adhesive. Magnetic plate has joining parts joined to flange parts and opposing part opposing winding core part, and surface roughness of joining parts is smaller than surface roughness of opposing part.

Abstract: A terminal electrode has a flat surface to which an end portion of a wire is connected, a low surface lower in a thickness direction of the terminal electrode than the flat surface, and a shift surface connects the flat surface and the low surface and increases a height in the thickness direction from the low surface to the flat surface. The wire has a first portion, a second portion and a third portion opposing the flat surface, the shift surface and the low surface, respectively. The first portion has a flattened cross-sectional shape, and the second portion has a semi-flattened cross-sectional shape.

Abstract: An inductor includes a core, first and second terminal electrodes, a wire, and a cover member. The core includes a shaft portion and first and second support portions. The wire includes a wound portion wound around the shaft portion, first and second connection end portions connected to the first and second terminal electrodes, respectively, a first wiring portion between the wound portion and the first connection end portion, and a second wiring portion between the wound portion and the second connection end portion. The cover member covers a top surface of the shaft portion. The first wiring portion and the second wiring portion are at least partly covered by the cover member.

Abstract: A circuit device and a power converter include a core, a coil surrounding at least a part of the core, and a first heat transfer member being in surface contact with the core. A temperature rise of the core can thus be prevented or reduced.

Abstract: A low-temperature baked vaporizer is disclosed, including an electromagnetic induction coil; and a sleeve, configured for receiving solid vaporizable materials; the sleeve is made from metallic materials; the electromagnetic induction coil encircles outside the sleeve; the sleeve includes a first sleeve and a second sleeve connected with the first sleeve; a longitudinal axis extending along a same axis direction of the first sleeve and the second sleeve, and a transverse axis that is perpendicular to and shorter that the longitudinal axis; a cross-sectional area of the first sleeve is smaller than that of the second sleeve along the transverse axis, and the second sleeve has a bigger mass than the first sleeve such that increasing rate of temperature of the second sleeve is slower than that of the first sleeve.

Abstract: A ceramic electronic component according to the present disclosure includes a ceramic insulator and conductor portions including inner conductors disposed inside the ceramic insulator and outer conductors disposed outside the ceramic insulator, wherein each conductor portion has a surface and a back surface opposite to the surface, and at least one of the conductor portions includes a flat portion in which the conductor thickness is constant, surface corner portions having a round-chamfered shape in the direction from the surface toward the back surface of the inner conductor or the outer conductor, and back surface corner portions having a round-chamfered shape in the direction from the back surface toward the surface of the inner conductor or the outer conductor.

Abstract: A magnetic core includes a winding core and first and second flanges connected to the winding core. First and second terminal electrodes are connected to a lead frame. The first flange is bonded to the first and second terminal electrodes. Third and fourth terminal electrodes are bonded to the second flange. First and second insulation-coated conductive wires are wound about the winding core. The first and second insulation-coated conductive wires are connected to the first and second terminal electrodes and the third and fourth terminal electrodes. The lead frame is bent so as to rotate the magnetic core by 90 degrees with respect to the lead frame. A magnetic plate is bonded to the magnetic core. The magnetic core is removed from the lead frame by removing the first and second terminal electrodes from the lead frame, thereby providing a common-mode choke coil. The common-mode choke coil having stable electrical performance is produced efficiently by the above method.

Abstract: A winding coil component includes a drum-shaped core including a winding core having a substantially n-sided prism shape having n side surfaces positioned around a central axis. The n side surfaces include a first side surface facing a mounting substrate and wire wound around the winding core portion and forming a multilayer portion in layers including a superposition beginning portion located in a region other than a region above an n-th side surface to which the n side surfaces are arranged in order from the first side surface in a winding direction in which a lowest layer of the multilayer portion winds toward the superposition beginning portion.

Abstract: Magnetic component assemblies for circuit boards include magnetic cores formed with a gap and preformed conductive windings sliding assembled to the cores via the gaps. The gaps in the cores are filled with a magnetic material to enhance the magnetic performance. The magnetic component assemblies may define power inductors.

Abstract: A terminal plate member on which a terminal of a coil component is mounted including: an annular frame having an inner peripheral edge; a pair of extension members extending from the inner peripheral edge of the annular frame toward an inner space of the annular frame member in a first direction; and a deformable section provided in the annular frame at proximal end of one of the pair of extension members, the deformable section having a more easily deformable property than other sections of the annular frame when force is applied. The deformable section is provided along at least an entire width in a second direction of the one of the pair of extension members. The second direction is perpendicular to the first direction.

Abstract: A laminated electronic component having a coil formed in a laminated body of pluralities of laminated magnetic material layers and conductor patterns by electrically connecting the conductor patterns adjacent to each other via the magnetic material layers. The magnetic material layers contain a metal magnetic material. The coil has a first end portion close to a bottom surface of the laminated body and a second end portion distant from the bottom surface of the laminated body. The first end portion is electrically connected to a first external terminal disposed on the bottom surface of the laminated body. The second end portion is electrically connected to a second external terminal disposed on the bottom surface of the laminated body via a conductor extending in a lamination direction of the laminated body. An insulator part is disposed between the conductor and the coil.

Abstract: An electronic component includes a multilayer body obtained by laminating a plurality of insulator layers the shape of which is substantially rectangular in plan view, a coil conductor in a substantially spiral shape provided on an insulator layer, and a land electrode located outside the coil conductor. The land electrode faces two sides intersecting at a vertex of the substantially rectangular shape when viewed along a direction of laminating the insulator layers, and is electrically connected to an end portion of the coil conductor, in which a shortest distance from one side of the two sides to the land electrode is equal to or longer than a shortest distance from the coil conductor to the one side.

Abstract: A spring-force connection having a housing part, a pivot lever, an electrically conductive connecting device and a contact spring by means of which a conductor (L) can apply force to the connecting device. The contact spring can be pivoted between release and clamping positions and has a pressing and a clamping limb, connected to the pressing limb using a bending joint. The pivot lever has a driver and the pressing limb is arranged between the pressing device and the driver in the closed position of the pivot lever and, by pivoting the pivot lever into its closed position, the pressing device can indirectly apply force to the pressing limb so that the contact spring is pivoted into its clamping position, so that the conductor applies force to the connecting device with the clamping limb and, by pivoting the pivot lever into its open position, the driver can indirectly apply force to the pressing limb so that the contact spring is pivoted into its release position.

Abstract: A wire-wound coil component includes a core having a spool and a flange, a wire wound around the spool, and an outer electrode to which an end portion of the wire is electrically coupled. The flange has a lateral surface and a bottom surface. The outer electrode has a metal thin-film section in contact with the lateral surface and a thick-film electrode section which is a metal composite film in contact with the bottom surface.

Abstract: An inductor component includes a coil, a magnetic core, a first terminal, and a second terminal. The coil is made of a wound conductive wire. The coil is embedded in the magnetic core made of magnetic metal powder and insulation resin binder. The magnetic core has a bottom surface, a top surface opposite to the bottom surface, a first side surface which is perpendicular to the bottom surface and is connected with the bottom surface and the top surface, a second side surface opposite to the first side surface, a third side surface connected with the first side surface and the second side surface, and a fourth side surface opposite to the third side surface. The first terminal and the second terminal extend from both ends of the coil and protrude from the bottom surface.

Abstract: A current sensor includes core components that form a magnetic circuit and form a space where to dispose a probe coil on the magnetic circuit; and a clip that press-joins the core components with each other. Since magnetic reluctance decreases at a portion where the core components are press-joined by the clip, an amount of magnetic flux of an external magnetic field passing through this portion increases, and accordingly, an amount of magnetic flux interlinked with the probe coil decreases. This improves the immunity of the current sensor to an external magnetic field.

Abstract: A semiconductor package includes a VLSI semiconductor die and one or more output circuits connected to supply power to the die mounted to a package substrate. The output circuit(s), which include a transformer and rectification circuitry, provide current multiplication at an essentially fixed conversion ratio, K, in the semiconductor package, receiving AC power at a relatively high voltage and delivering DC power at a relatively low voltage to the die. The output circuits may be connected in series or parallel as needed. A driver circuit may be provided outside the semiconductor package for receiving power from a source and driving the transformer in the output circuit(s), preferably with sinusoidal currents. The driver circuit may drive a plurality of output circuits. The semiconductor package may require far fewer interface connections for supplying power to the die.

Abstract: In an exemplary embodiment, a coil component 10 is constituted by a drum core 20, a ring core 30, and a resin base 70. A metal plate is embedded in the resin base 70, terminal electrodes 50A, 50B are exposed on a mounting surface side, and connecting parts 52A, 52B internally connected with the terminal electrodes 50A, 50B are pulled out from side surfaces 74A, 74B of the resin base 70. A coating 44 is laser-stripped from lead parts 46A, 46B at both ends of the winding wire 40 wound around a winding shaft 22 of the drum core 20. An end of the conductive wire 42, from which the coating 44 is stripped, is sandwiched by the connecting parts 52A, 52B and securing parts 54A, 54B, and joined together by laser irradiation, forming joining parts 56A, 56B which are separated from the coating end 45.

Abstract: An inductor includes a substrate as a base material, a core portion, a coil portion, an insulating portion formed between conductors of the coil portion, and a terminal portion connecting the core portion and the coil portion to the outside. A main direction of a magnetic field that is generated in accordance with current flowing through the coil portion extends in a planar direction of the substrate. In at least a portion of the coil portion, both width and thickness of a rectangular cross-sectional area of the coil portion are larger than the width of the insulating portion.