Abstract: An inductor includes: a magnetic core; a conduction path penetrating the magnetic core; a pedestal portion including a core holding portion that holds the magnetic core, and support portions that support, when placed on a circuit board, electronic components at a height at which the electronic components can be accommodated on the circuit board side with respect to the core holding portion; and a shield portion that is provided on the circuit board side with respect to the magnetic core, and that shields a magnetic field generated by flow of electricity in the conduction path.

Abstract: A circuit assembly includes a first conductive member; a second conductive member; and a holding member that is insulating and holds the first conductive member and the second conductive member; wherein the first conductive member has a first exposed surface exposed from the holding member, the second conductive member has a second exposed surface exposed from the holding member, the holding member includes an insulating portion located between the first exposed surface and the second exposed surface, and a conductive film covers at least a part of the first exposed surface and at least a part of the second exposed surface, while extending over the insulating portion.

Abstract: A circuit assembly includes: a first conductive member; a second conductive member; a holding member that is insulating and holds the first conductive member and the second conductive member; and an electronic component that includes a first terminal and a second terminal. The first conductive member has a first exposed surface exposed from the holding member so as to be electrically connected to the first terminal, the second conductive member has a second exposed surface exposed from the holding member so as to be electrically connected to the second terminal, the holding member includes an insulating portion located between the first exposed surface and the second exposed surface, a first conductive film is provided, the first conductive film covering at least a part of the first exposed surface and part of the insulating portion, and the first terminal is electrically connected to the first conductive film.

Abstract: The present disclosure enables a cost reduction for a circuit assembly including electronic components. A circuit assembly includes: an electronic component; a conductive plate to which the electronic component is connected; and a holding member that holds the conductive plate. The conductive plate includes a mounting portion on which the electronic component is mounted, and a fiducial mark for positioning and mounting the electronic component. The fiducial mark is constituted by a hole formed in the conductive plate.

Abstract: A circuit assembly that includes an inductor including a core; a fixation member to which the inductor is fixed; a base that is attached to the core, wherein: the fixation member is made of a first material having a coefficient of thermal expansion larger than a coefficient of thermal expansion of the core, and the base is made of a second material having a coefficient of thermal expansion larger than the coefficient of thermal expansion of the core and smaller than the coefficient of thermal expansion of the fixation member; and an adhesive layer that is disposed between the base and the fixation member, and that bonds the base and the fixation member together.

Abstract: A heat radiating member and an electrical junction box are provided that have a simple configuration and are capable of quickly radiating heat generated by a semiconductor device. A support member, which receives heat from a substrate portion having a mounting face on which a semiconductor device is mounted, via an opposing plate portion opposing the mounting face, and radiates the received heat, includes a recessed portion formed in the opposing plate portion, at a position corresponding to the semiconductor device. The recessed portion has a wall thickness that is greater than that of another portion of the opposing plate portion.

Abstract: A circuit assembly that includes a plurality of FETs that include source terminals and gate terminals. The circuit assembly includes a substrate portion to which the source terminals and the gate terminals are connected, and through-holes that are formed in the substrate portion for each FET and pass through the substrate portion in the thickness direction thereof.

Abstract: A coil assembly including a magnetic core; and a coil including a winding portion formed by winding a flat wire edgewise, wherein opposite end portions of the flat wire extend from the winding portion in the same direction, and the opposite end portions serve as connector connection portions that are to be connected to receiving-side connectors. Such a coil assembly is conductively connected to a circuit board including the receiving-side connector, and is accommodated in an outer case.

Abstract: A circuit assembly where the circuit board includes a first surface and a second surface that is opposite to the first surface and on which a plurality of bus bars are routed, the inductor includes a main body and a terminal that is led out from the main body and has a shape that is bent toward the circuit board, and a leading end of the terminal is connected through a screwing member to a bus bar of the plurality of bus bars exposed from an opening provided on the circuit board, the screwing member is held in an insulating holder housed in a housing recess provided in the heat dissipation plate, and the heat dissipation plate is overlaid so as to transfer heat on the circuit board on the second surface of the circuit board.

Abstract: A circuit assembly includes a substrate having a conductive path, electronic components mounted on the substrate, and a terminal block that is in contact with the substrate, in which the terminal block includes a terminal portion that is connectable to a counterpart terminal, a terminal holding portion for holding the terminal portion, and support portions for supporting the terminal holding portion, and the electronic components are disposed between the terminal holding portion and the substrate.

Abstract: The electrical connection box includes a case, a frame that is made of a synthetic resin and whose position is fixed relative to the case, fixed terminals that are fixed to the frame and can be connected to external terminals, a fuse having terminals that are put over the fixed terminals, stud bolts for fastening the external terminals, the fixed terminals, and the terminals of the fuse together, and a holding member that holds the stud bolts. The frame includes an attached portion to which the holding member is attached.

Abstract: A circuit assembly includes a substrate having a conductive path, electronic components mounted on the substrate, and a terminal block that is in contact with the substrate, in which the terminal block includes a terminal portion that is connectable to a counterpart terminal, a terminal holding portion for holding the terminal portion, and support portions for supporting the terminal holding portion, and the electronic components are disposed between the terminal holding portion and the substrate.

Abstract: An inductor includes: a magnetic core; a conduction path penetrating the magnetic core; a pedestal portion including a core holding portion that holds the magnetic core, and support portions that support, when placed on a circuit board, electronic components at a height at which the electronic components can be accommodated on the circuit board side with respect to the core holding portion; and a shield portion that is provided on the circuit board side with respect to the magnetic core, and that shields a magnetic field generated by flow of electricity in the conduction path.

Abstract: A heat radiating member and an electrical junction box are provided that have a simple configuration and are capable of quickly radiating heat generated by a semiconductor device. A support member, which receives heat from a substrate portion having a mounting face on which a semiconductor device is mounted, via an opposing plate portion opposing the mounting face, and radiates the received heat, includes a recessed portion formed in the opposing plate portion, at a position corresponding to the semiconductor device. The recessed portion has a wall thickness that is greater than that of another portion of the opposing plate portion.

Abstract: Provided is a circuit board structure that can enhance heat dissipation performance of heat generated by a semiconductor element and effectively perform heat dissipation. A circuit board structure includes a circuit board portion having a mounting face on which semiconductor elements are mounted, an opposing plate portion that is opposed to the mounting face and that dissipates heat from the circuit board portion, a plurality of semiconductor elements mounted on the mounting face in a row, and a recessed portion formed at a position corresponding to the plurality of semiconductor elements in the opposing plate portion.

Abstract: A circuit assembly that includes an inductor including a core; a fixation member to which the inductor is fixed; a base that is attached to the core, wherein: the fixation member is made of a first material having a coefficient of thermal expansion larger than a coefficient of thermal expansion of the core, and the base is made of a second material having a coefficient of thermal expansion larger than the coefficient of thermal expansion of the core and smaller than the coefficient of thermal expansion of the fixation member; and an adhesive layer that is disposed between the base and the fixation member, and that bonds the base and the fixation member together.

Abstract: A coil assembly includes a coil unit in which a coil obtained by winding a winding wire is disposed around a magnetic core, a coil case that accommodates the coil unit, and a potting material with which an inside of the coil case is filled, and the coil case has an elastic fixing portion that is attachable to a resin member to which the coil case is to be fixed. The above-described configuration makes it possible to provide a coil assembly that is unlikely to crack and generate abnormal noises.

Abstract: An electrical junction box that includes a circuit board on which a coil element is installed; a partition wall that surrounds the coil element and separates an installation region on the circuit board on which the coil element is installed from a region around the installation region; a frame that is formed in one piece with the partition wall and surrounds the circuit board; a heat dissipation plate on which the circuit board and the frame are placed; and a cover that covers the circuit board from the frame side, wherein the coil element is fixed to the partition wall using a synthetic resin material, and wherein the frame and the heat dissipation plate are positioned relative to each other through a recess-projection engagement, and the cover is fixed to the heat dissipation plate using screws.

Abstract: A circuit assembly where the circuit board includes a first surface and a second surface that is opposite to the first surface and on which a plurality of bus bars are routed, the inductor includes a main body and a terminal that is led out from the main body and has a shape that is bent toward the circuit board, and a leading end of the terminal is connected through a screwing member to a bus bar of the plurality of bus bars exposed from an opening provided on the circuit board, the screwing member is held in an insulating holder housed in a housing recess provided in the heat dissipation plate, and the heat dissipation plate is overlaid so as to transfer heat on the circuit board on the second surface of the circuit board.

Abstract: The electrical connection box includes a case, a frame that is made of a synthetic resin and whose position is fixed relative to the case, fixed terminals that are fixed to the frame and can be connected to external terminals, a fuse having terminals that are put over the fixed terminals, stud bolts for fastening the external terminals, the fixed terminals, and the terminals of the fuse together, and a holding member that holds the stud bolts. The frame includes an attached portion to which the holding member is attached.