Abstract: A semiconductor module cooler supplies a cooling medium to a cooling medium jacket from outside to cool a plurality of semiconductor elements thermally connected to the cooling medium jacket through a heat sink. The cooling medium jacket has a cooling fin cooling room including an opening for inserting cooling fins, and cooling the cooling fins; a cooling medium introduction port to introduce the cooling medium; a cooling medium diffusion room to diffuse and supply the cooling medium to the cooling fin cooling room; a cooling medium diffusion wall provided in the cooling medium diffusion room in which the cooling medium diffused by the cooling medium diffusion room flows over to be introduced to the cooling fin cooling room side; a cooling medium discharge port discharging the cooling medium to the outside; and a cooling medium convergence room provided between the cooling fin cooling room and the cooling medium discharge port.

Abstract: A semiconductor device has a connection structure in which a power semiconductor chip is mounted on an insulating substrate having conductor patterns bonded to front and rear surfaces thereof and the insulating substrate is bonded to a heat-dissipating base member to dissipate heat generated from the power semiconductor chip to outside. The conductor pattern bonded to the heat-dissipating base member is formed such that a thickness of a circumferential portion of a bonding surface of the conductor pattern bonded to the insulating substrate is less than that of a center of the bonding portion.

Abstract: A semiconductor device has a connection structure in which a power semiconductor chip is mounted on an insulating substrate having conductor patterns bonded to front and rear surfaces thereof, and the insulating substrate is connected to a heat-dissipating base member to dissipate heat generated from the power semiconductor chip to outside. The conductor pattern on the rear surface bonded to the heat-dissipating base member has a bonding portion having a rectangular shape and a predetermined curvature radius in vicinity of corners.

Abstract: A semiconductor module cooler supplies a cooling medium to a cooling medium jacket from outside to cool a plurality of semiconductor elements thermally connected to the cooling medium jacket through a heat sink. The cooling medium jacket has a cooling fin cooling room including an opening for inserting cooling fins, and cooling the cooling fins; a cooling medium introduction port to introduce the cooling medium; a cooling medium diffusion room to diffuse and supply the cooling medium to the cooling fin cooling room; a cooling medium diffusion wall provided in the cooling medium diffusion room in which the cooling medium diffused by the cooling medium diffusion room flows over to be introduced to the cooling fin cooling room side; a cooling medium discharge port discharging the cooling medium to the outside; and a cooling medium convergence room provided between the cooling fin cooling room and the cooling medium discharge port.

Abstract: A semiconductor device has a connection structure in which a power semiconductor chip is mounted on an insulating substrate having conductor patterns bonded to front and rear surfaces thereof, and the insulating substrate is connected to a heat-dissipating base member to dissipate heat generated from the power semiconductor chip to outside. The conductor pattern on the rear surface bonded to the heat-dissipating base member has a bonding portion having a rectangular shape and a predetermined curvature radius in vicinity of corners.

Abstract: A semiconductor device has a connection structure in which a power semiconductor chip is mounted on an insulating substrate having conductor patterns bonded to front and rear surfaces thereof and the insulating substrate is bonded to a heat-dissipating base member to dissipate heat generated from the power semiconductor chip to outside. The conductor pattern bonded to the heat-dissipating base member is formed such that a thickness of a circumferential portion of a bonding surface of the conductor pattern bonded to the insulating substrate is less than that of a center of the bonding portion.

Abstract: A resin-sealed semiconductor device includes a heat sink on which a semiconductor chip is provided. An output terminal is connected to the semiconductor chip. A casing surrounds the chip and part of the output terminal. The inside of the casing is filled with a sealing resin containing an aggregate such as glass particle. The chip is mounted in the area of an upper surface of the heat sink and the remaining area is covered with an epoxy resin film, which is from 10 .mu.m to 20 .mu.m thick. The resin film increases the bonding strength between the sealing resin and the heat sink and prevents the sealing resin from peeling away from the heat sink upon heat cycles due to different expansion coefficients.

Abstract: A terminal structure for a resin-sealed semiconductor device is formed of a circuit assembly, an outer casing for housing the circuit assembly therein and having a recess for retaining a terminal nut therein, molding resin filled in the outer casing to seal the circuit assembly, and an externally drawn terminal connected to the circuit assembly and extending outwardly through the outer casing. The externally drawn terminal has an external wire connecting portion disposed outside the lid. An anchor or a fixing device is attached to the external wire connecting portion so that the external wire connecting portion is fixed to the casing by two points.