摘要:
A power semiconductor device includes a conductive insertion member as an external terminal projecting from a surface of the power semiconductor device facing a printed wiring board. The printed wiring board includes a conductive fitting member mounted on a pad part of the printed wiring board. The fitting member receives the insertion member therein when the power semiconductor device is connected to the printed wiring board. The insertion member has a recessed portion formed on a side surface of the insertion member. The fitting member has a projecting portion with elasticity formed on an inner side surface of the fitting member. The elasticity causes the projecting portion of the fitting member to contact the recessed portion of the insertion member under pressure when the insertion member is inserted into the fitting member.
摘要:
A semiconductor device including: a semiconductor element; a lead frame connected to the semiconductor element; a metal base plate mounted on the lead frame via a first insulation layer; and a second insulation layer disposed on the opposite side of the metal base plate face on which the first insulation layer is disposed; wherein the first insulation layer is an insulation layer whose heat-dissipation performance is higher than that of the second insulation layer, and the second insulation layer is an insulation layer whose insulation performance is the same as that of the first insulation layer or higher than that of the first insulation layer.
摘要:
A semiconductor device includes a metal substrate including a metal base plate, an insulating sheet located on the metal base plate, and a wiring pattern located on the insulating sheet, and a semiconductor element located on the metal substrate. The semiconductor element is sealed with a molding resin. The molding resin extends to side surfaces of the metal substrate. On the side surfaces of the metal substrate, the insulating sheet and the wiring pattern are not exposed from the molding resin, whereas the metal base plate includes a projecting portion exposed from the molding resin.
摘要:
A power semiconductor module includes: a circuit board having a metal base plate, a high thermal conductive insulating layer, and a wiring pattern; power semiconductor elements electrically connected to the wiring pattern; tubular external terminal connection bodies provided to the wiring pattern for external terminals; and a transfer mold resin body encapsulated to expose through-holes in the metal base plate and used to fixedly attach cooling fins to the face of the metal base plate on the other side with attachment members, the face of the metal base plate on the other side, and top portions of the tubular external terminal connection bodies, to form insertion holes for the attachment members communicating with the through-holes and having a larger diameter than the through-holes, and to cover the one side and side faces of the metal base plate and the power semiconductor elements.
摘要:
A power semiconductor module includes: a circuit board having a metal base plate, a high thermal conductive insulating layer, and a wiring pattern; power semiconductor elements electrically connected to the wiring pattern; tubular external terminal connection bodies provided to the wiring pattern for external terminals; and a transfer mold resin body encapsulated to expose through-holes in the metal base plate and used to fixedly attach cooling fins to the face of the metal base plate on the other side with attachment members, the face of the metal base plate on the other side, and top portions of the tubular external terminal connection bodies, to form insertion holes for the attachment members communicating with the through-holes and having a larger diameter than the through-holes, and to cover the one side and side faces of the metal base plate and the power semiconductor elements.
摘要:
A power semiconductor device includes a power semiconductor module having cylindrical conductors which are joined to a wiring pattern so as to be substantially perpendicular to the wiring pattern and whose openings are exposed at a surface of transfer molding resin, and an insert case having a ceiling portion and peripheral walls, the ceiling portion being provided with external terminals that are fitted into, and passed through, the ceiling portion, the external terminals having outer-surface-side connecting portions at the outer surface side of the ceiling portion and inner-surface-side connecting portions at the inner surface side of the ceiling portion. The power semiconductor module is set within the insert case such that the inner-surface-side connecting portions of the external terminals are inserted into the cylindrical conductors.
摘要:
In the power semiconductor module, a wiring metal plate electrically connects between power semiconductor elements joined to the circuit pattern, and between the power semiconductor elements and the circuit pattern. Cylindrical main terminals are joined, substantially perpendicularly, to the wiring metal plate and the circuit pattern, respectively. A cylindrical control terminal is joined, substantially perpendicularly, to one of the power semiconductor elements.
摘要:
An air conditioner and a method for controlling an air conditioner are provided for controlling the direction in which conditioned air is discharged during powerful operation. The air conditioner is provided with a control unit. The control unit is connected, among other things, to a compressor, a four-way switching valve, a pressure-reducing device, a remote control, a fan motor, a flap motor, a temperature sensor, and an infrared sensor. The control unit controls the compressor, the four-way switching valve, the pressure-reducing device, the fan motor, and the flap motor. When a command for powerful operation is entered from the remote control, the control unit temporarily increases the rotational speed of the cross-flow fan, the operating frequency of the compressor, and the like, enhances the air conditioning capacity, and controls the direction of the horizontal flap according to the direction in which people are present in the room.
摘要:
A method of manufacturing highly reliable and highly dense printed wiring board which is not warped even by the application of pressure and heat in manufacturing the multi-layer printed wiring board. The highly precise and highly dense multi-layer printed wiring board is realized by using an uncured resin sheet reinforced with fiber as an interlayer insulating layer, forming non-through holes in the uncured resin sheet using a laser beam, filling the non-through holes with a conductive paste, half-curing the conductive paste to form a wiring material, and sticking the wiring material onto the wiring substrate by application of pressure and heat, without causing a deviation in position even in applying pressure and heat.
摘要:
A recyclable toner container having a hollow cylindrical body, a toner outlet at one end of the container, and a removable cap fitted in the toner outlet. The cap have a plurality of circumferential protuberances on an outer periphery thereof and contacting the inner periphery of the toner outlet. The diameters of the plurality of protuberances are sequentially increased from a downstream side toward an upstream side in a direction in which the cap is inserted into the toner outlet.