摘要:
An electronic device includes: a substrate having first and second surfaces, wherein the first surface is opposite to the second surface; a first electronic element mounted on the first surface of the substrate; a second electronic element mounted on the second surface of the substrate; and a resin mold sealing the first electronic element and the first surface of the substrate. The resin mold further seals the second electronic element on the second surface of the substrate. The second surface of the substrate has a portion, which is exposed from the resin mold. The second electronic element is not disposed on the portion of the second surface.
摘要:
An electronic device includes: a substrate having first and second surfaces, wherein the first surface is opposite to the second surface; a first electronic element mounted on the first surface of the substrate; a second electronic element mounted on the second surface of the substrate; and a resin mold sealing the first electronic element and the first surface of the substrate. The resin mold further seals the second electronic element on the second surface of the substrate. The second surface of the substrate has a portion, which is exposed from the resin mold. The second electronic element is not disposed on the portion of the second surface.
摘要:
An electronic device includes: a substrate having first and second surfaces, wherein the first surface is opposite to the second surface; a first electronic element mounted on the first surface of the substrate; a second electronic element mounted on the second surface of the substrate; and a resin mold sealing the first electronic element and the first surface of the substrate. The resin mold further seals the second electronic element on the second surface of the substrate. The second surface of the substrate has a portion, which is exposed from the resin mold. The second electronic element is not disposed on the portion of the second surface.
摘要:
An electronic device includes: a substrate having first and second surfaces, wherein the first surface is opposite to the second surface; a first electronic element mounted on the first surface of the substrate; a second electronic element mounted on the second surface of the substrate; and a resin mold sealing the first electronic element and the first surface of the substrate. The resin mold further seals the second electronic element on the second surface of the substrate. The second surface of the substrate has a portion, which is exposed from the resin mold. The second electronic element is not disposed on the portion of the second surface.
摘要:
A semiconductor device includes: first to fourth vertical type semiconductor elements having first and second electrodes; a metallic lead; a resin mold; a circuit board; an electric circuit on the circuit board; and an electronic chip on the circuit board. The electronic chip drives and controls each semiconductor element through the electric circuit. The first to fourth semiconductor elements are arranged to be a stack construction in the resin mold. The first to fourth semiconductor elements provide a H-bridge circuit. Each of the first and second electrodes in each semiconductor element is directly connected to the metallic lead so that heat generated in the semiconductor element is radiated through the metallic lead.
摘要:
An electric device includes: a first electric element; a second electric element capable of flowing large current therethrough so that heat is generated in the second electric element; a heat sink; and a first wiring board and a second wiring board, which are disposed on one side of the heat sink. The large current in the second electric element is larger than that in the first electric element. The first wiring board and the second wiring board are separated each other. The first electric element is disposed on the first wiring board, and the second electric element is disposed on the second wiring board.
摘要:
An electronic device includes: a first substrate and a second substrate; a lead frame disposed between the first and the second substrates for electrically connecting therebetween; and a first groove and a second groove disposed on the first and the second substrates, respectively. The first and the second grooves correspond to a connection portion between the first and the second substrates and the lead frame. The lead frame is connected to the first and the second substrates in such a manner that one end of the lead frame is engaged in both of the first and the second grooves through a conductive bonding material.
摘要:
A rotary solenoid includes a swing yoke to which two magnets are fixed and a fixed yoke including projection portions at opposite sides thereof. An electromagnetic coil including a major magnetic pole is arranged at a center of the fixed yoke. The rotary solenoid is arranged to define a magnetic circuit extending through one of the magnets, the major magnetic pole, the fixed yoke, the projection portion, and the other magnet at a shortest distance.
摘要:
An electric device includes: a first electric element; a second electric element capable of flowing large current therethrough so that heat is generated in the second electric element; a heat sink; and a first wiring board and a second wiring board, which are disposed on one side of the heat sink. The large current in the second electric element is larger than that in the first electric element. The first wiring board and the second wiring board are separated each other. The first electric element is disposed on the first wiring board, and the second electric element is disposed on the second wiring board.
摘要:
An electronic device includes: a first substrate and a second substrate; a lead frame disposed between the first and the second substrates for electrically connecting therebetween; and a first groove and a second groove disposed on the first and the second substrates, respectively. The first and the second grooves correspond to a connection portion between the first and the second substrates and the lead frame. The lead frame is connected to the first and the second substrates in such a manner that one end of the lead frame is engaged in both of the first and the second grooves through a conductive bonding material.