摘要:
An assembled semiconductor device comprising a base constituting one electrode, a semiconductor pellet mounted on the base, an insulation ring located to surround the semiconductor pellet and having a height larger than the thickness of the semiconductor pellet, an electrode member mounted on the insulation ring and in electrical contact with the upper surface of the semiconductor pellet, a lead electrode disposed on the electrode member, a pressure plate mounted on the lead electrode through an insulation member or being formed of an insulation material and disposed on the lead electrode, a bolt screwed into the base, and a pressing device which presses the semiconductor pellet through the pressure plate. The inventive device simplifies the assembling process, makes the maintenance easy, and improves the air-tightness for the semiconductor pellet.
摘要:
A semiconductor chip having improved heat dissipation capability. The back surface of a semiconductor chip is provided with microscopic channels defined by fins in intimate contact with the chip. A cover is affixed to the fins to enclose the channels for the laminar flow of coolant fluid. The chip can be mounted in a recessed portion of a dual in-line package (DIP) with conductive tubes integral with the package providing the flow of coolant. Advantageously, the tubes can function as power busses to the integrated circuit.
摘要:
A power semiconductor component for boiling cooling or liquid cooling includes a semiconductor crystal disc having two main electrodes and, optionally, one or more control electrodes. The disc is built into a liquid and gas-tight housing through which an electrically insulating coolant can flow. The housing is formed substantially of a ceramic sleeve with metallic covers which are disposed on both sides and the metallic covers are directly acted upon by the coolant. Electric circuitry, especially resistors and diodes, are integrated in a circuitry module which is in force-locking thermal contact with the metallic cover of the power semiconductor component.
摘要:
A system for cooling a substrate via a continuous enclosed path within the substrate that passes closely adjacent heat producing components on or adjacent the substrate. According to a first embodiment, heat, where located on the substrate, is transmitted to a heat sink in the vapor phase by a change in phase of a liquid in the path to a vapor, thereby creating little change in temperature from heat source to heat sink and maintaining the substrate and components at substantially the same substantially constant temperature. According to a second embodiment, heat is removed by a circulating conductive liquid in the continuous enclosed path which takes up heat at the sources and removes the heat at a sink in the path. The conductive liquid is part of a magnetohydrodynamic (MHD) cooling system wherein, at one location in the path, a current is applied to the liquid orthogonal to the path and a magnetic field is applied orthogonal to the path and the current flow to create a force on the conductive liquid along the path.
摘要:
A semiconductor device comprises a body of semiconductor material having a base-emitter structure on a first surface of the body. The base emitter structure includes a plurality of discrete emitter regions interdigitated with a base region having a base contact on the base region. A base contact ring is attached coaxially to the base contact. An improved base terminal structure comprises a conductive base feed-through ring having a base terminal integral with the feed-through ring. The base feed-through ring is spaced from and concentric with the base contact ring. The base terminal structure further includes a resilient contact ring attached to the base contact ring and the base feed-through ring to provide a low impedance interconnection between the base contact ring and the base feed-through ring.
摘要:
A high performance, wafer-shaped semiconductor device of the type including a wafer-shaped semiconductor element, a pair of electrodes located on the surfaces of the element, a pair of cylindrical metal bodies contacting the electrodes, an insulating ring enclosing and centering the metal bodies and the semiconductor element and a plastic jacket surrounding the insulating ring for tightly encasing the semiconductor device. In addition, there is provided a pair of annular sheet metal strips each of which has an inner edge region fastened to one of the cylindrical metal bodies and a corrugated chemically roughened outer edge region which is embedded in the plastic jacket. A powder coating is applied to the chemically roughened outer edge region for the purpose of providing a pressure and oil-tight housing for the semiconductor device.
摘要:
Semiconductor component includes a closed housing having a base and a cover and being formed with a plurality of recesses therewithin, a plurality of semiconductor elements received in the recesses, respectively, and having at least two poles, a plurality of contact strips heat-conductively connected to and electrically insulated from the housing base, one of the poles of each of the semiconductor elements being in contact with a respective one of the contact strips and therethrough being in heat-conductive contact with the housing base, a plurality of supply electrodes, respectively, connected to another of the poles of the respective semiconductor elements, the respective contact strip in contact with a respective pole of one of the semiconductor elements and the respective supply electrode connected to a respective pole of another of the semiconductor elements being electrically connected to one another, a cross-piece disposed in the housing between the recesses wherein the semiconductor elements are received, and means secured to the crosspiece for yieldably biasing the supply electrodes against the semiconductor elements, the contact strips and the contact electrodes extending out of the housing and forming terminals for the respective semiconductor elements.
摘要:
A high-power semiconductor assembly of the disk-cell construction has an insulating housing and exhibits electrical and thermal pressure-contacting of the semiconductor chip. At least two zones of different conduction types are provided within the chip and the same is clamped, in an essentially doubly symmetrical arrangement with respect to the mid-plane of the chip and the central axis perpendicular thereto, with the interposition of pressure plates, heat-conducting paste, and electrodes, particularly cup-shaped electrodes with their open sides disposed away from the main surfaces of the semiconductor chip, and between two terminal electrodes serving as heat sinks.
摘要:
A plurality of semiconductor elements alternating in compressive contact relationship hollow heat dissipation blocks are disposed below a coolant reservoir filled with a condensible coolant in its liquid phase having a liquid surface. The hollow blocks are connected to the reservoir through respective connection tubes to be filled with the liquid coolant. A condenser is disposed above the reservoir. One auxiliary tube is disposed within each connection tube and has an upper open end located below the liquid surface and short of a point where a condensed coolant from the condenser flows into the reservoir and a lower end opening within the associated block.
摘要:
A power module includes a first board including an insulation layer, a first metal layer disposed on a first side of the insulation layer, and a second metal layer disposed on a second side of the insulation layer opposed to the first side of the insulation layer, a semiconductor chip disposed on the first metal layer, a heat dissipation plate connected to the second metal layer in a first direction, a housing connected to the heat dissipation plate to form an integral cooling channel therein, and a connecting body made of a clad metal in which a first material, which is connected to the heat dissipation plate and is disposed to face an inside of the cooling channel, and a second material, which is connected to the housing and is different from the first material, overlap each other in the first direction.