Abstract:
An underfill film for an electronic device includes a thermally conductive sheet. The electronic device may include a printed circuit board, an electrical component, an underfill, and the thermally conductive sheet. The underfill is situated between the circuit board and the component. The thermally conductive sheet is situated within the underfill, and together with the underfill, constitutes the underfill film. The device may include solder bumps affixing the component to the circuit board, the underfill film having holes within which the solder bumps are aligned. There may be solder bumps on the underside of the circuit board promoting heat dissipation. There may be heat sinks on the circuit board to which the thermally conductive sheet is affixed promoting heat dissipation. The thermally conductive sheet may be affixed to a chassis promoting heat dissipation. The thermally conductive sheet thus promotes heat dissipation from the component to at least the circuit board.
Abstract:
A circuit arrangement includes a power module combined with a printed circuit board. The power module and the printed circuit board are disposed between a heat sink and a pressing device and are contact-connected to one another by pressure contact elements. The power module has at least one module board element and a housing formed with shafts for the pressure contact elements. The shafts open out from the housing base facing printed circuit board at opening orifices. The base is formed with orifice sealing ribs around the opening orifices. Moreover, the base of the housing may have a peripheral edge sealing rib along its outer edge. Furthermore, a sealing area element can be provided between the printed circuit board and the base of the housing.
Abstract:
A circuit arrangement includes a power module combined with a printed circuit board. The power module and the printed circuit board are disposed between a heat sink and a pressing device and are contact-connected to one another by pressure contact elements. The power module has at least one module board element and a housing formed with shafts for the pressure contact elements. The shafts open out from the housing base facing printed circuit board at opening orifices. The base is formed with orifice sealing ribs around the opening orifices. Moreover, the base of the housing may have a peripheral edge sealing rib along its outer edge. Furthermore, a sealing area element can be provided between the printed circuit board and the base of the housing.
Abstract:
An illumination device comprising a connection carrier (1), at least one light-emitting diode (10), an electrically insulating layer (3) and a fixing device (4) is specified. The connection carrier (1) has a first main area (1a) and a second main area (1b) remote from the first main area. The light-emitting diode (10) is fixed on the first main area (1a) of the connection carrier (1). The electrically insulating layer (3) is fitted to the second main area (1b) of the connection carrier (1) and projects laterally beyond the second main area (1b) of the connection carrier (1). The fixing device (4) is suitable for fixing the illumination device to a mounting area (2a) of a carrier (2), wherein the electrically insulating layer (3) is arranged between the second main area (1b) of the connection carrier (1) and the mounting area (2a) of the carrier (2). Furthermore, the fixing device (4) presses the connection carrier (1) against the mounting area (2a). The pressure exerted in this way is used to effect a fixing of the insulating layer (3) between the second main area (1b) of the connection carrier (1) and the mounting area (2a). The fixing device (4) is connected to an optical element (8), which optically influences the light generated by the light-emitting diode (10) during operation.
Abstract:
Information regarding electrical components and their use is provided with a foldable information sheet having instructions thereon. The sheet has apertures which fit over the electrical components and information is printed on the sheet in proximity to the electrical component or components to which it applies. A portion of the information sheet may be adhered to a planar surface on which the components are mounted and non-adhered portions of the information sheet may be folded over the components.
Abstract:
In a rubber contact switch in which ends of lead lines of an LED extend to the rear surface of a printed board through holes of a rubber contact sheet to be soldered on the printed board, a recessed portion is formed in the peripheral portions of the holes on the rear surface of the rubber contact sheet, and heat generated by soldering of the lead lines is prevented from being directly transmitted to the rubber contact sheet.
Abstract:
A method for the construction and application of a plate interface for the electrical interconnection in control and monitoring devices with terminal outlets of the plate type, using the steps of:making a rigid printed circuit having apertures disposed according to the layout of the output terminals of the control device;applying by screen-printing a soldering paste onto the locations of the printed circuit corresponding to the terminals to be brought into electrical contact;preheating only the terminals of the control device;assembling the electrical interconnection plate on the control device with the interposition of a further plate for the thermal protection of the control device itself; andmelting of the soldering paste according to a thermal cycle comprising an associated programming and monitoring device having output terminals for connectors of the plate-type, electrically interconnected and functionally arranged by means of an interface having a rigid plate electrically connected to the terminals by welding, intended especially for use in washing machines, drying machines and the like.
Abstract:
A molded circuit board formed by molding a resin substrate to one side of a circuit film made by forming a desired circuit pattern to an insulating film in a manner to form an integral body. In the circuit film, there are provided soldering pad regions for mounting surface-mounting parts in a surface of the circuit film opposite the other surface in contact with resin substrate and through-holes at locations of the circuit film where insert-mounting parts are mounted. In the resin substrate, holes for receiving insert-mounting parts are formed in the molding process at the locations corresponding to the through-holes of the circuit film.
Abstract:
An RF interconnect is incorporated in RF module packages (50) for direct attachment onto a multi-layer PWB (100) using compressible center conductor (fuzz button) interconnects. The module has circuitry operating at microwave frequencies. The module package includes a metal housing (52) including a metal bottom wall structure (54). The module includes a plurality of RF interconnects, which provide RF interconnection between the package (50) and the PWB (100). Each interconnect includes a feedthrough center pin (72) protruding through an opening formed in the metal bottom wall, with isolation provided by a dielectric feedthrough insulator (74). The center pin is surrounded with a ring of shield pins (76) attached to the external surface of the bottom wall of the module housing. The pins are insertable in holes (116a, 116b) formed in the PWB (100), and make contact with fuzz button interconnects (130, 132) disposed in the holes (116a, 116b). Circuitry (148, 150) connects the fuzz button interconnects (130, 132) to appropriate levels (120, 122, 124) of the PWB signal conduction.
Abstract:
An electrical connector (10) comprises an insulating enclosure (12) for the accommodation of contacts (13) and a punched solder board (25) held on one side of the enclosure (19) for the purpose of soldered connection to a printed circuit board (11). The solder board (25) fastened by means of recesses (28 to 30) to integral insulating pegs (33 to 35) projecting from the side of the enclosure (19). Further the solder board (25) is provided in the region of each recess (28 to 30) with a tongue (48 to 50) between whose free end and the opposite edge region (41 to 43) of the recess (28 to 30) the insulating peg (33 to 35) can be clamped.