Abstract:
The present invention provides a vertical card connector (12) capable of preventing an undesirable flow of melted solder which destroys proper contacts and of removing a corrosion-causing acid gas. The vertical card connector includes an insulating housing (14) with a plurality of contact terminals (26) and a heat-resisting insulating resin film (28) covering the bottom surface (14b) of the housing. Each contact terminal has a solder tail (26b) extending through film. A slight gap (30a) is created between the heat-resisting film (28) and the bottom surface of the housing. The solder tail of the contact is inserted into a corresponding plated through hole (1a) and soldered there. The film (28) prevents a melted solder from flowing past the solder tail toward a contact beam of the contact at a time of soldering. A gas evolved from the solder escapes through the gap between the circuit board and the bottom of the housing.
Abstract:
The present invention provides a vertical card connector (12) capable of preventing an undesirable flow of melted solder which destroys proper contacts and of removing a corrosion-causing acid gas. The vertical card connector includes an insulating housing (14) with a plurality of contact terminals (26) and a heat-resisting insulating resin film (28) covering the bottom surface (14b) of the housing. Each contact terminal has a solder tail (26b) extending through film. A slight gap (30a) is created between the heat-resisting film (28) and the bottom surface of the housing. The solder tail of the contact is inserted into a corresponding plated through hole (1a) and soldered there. The film (28) prevents a melted solder from flowing past the solder tail toward a contact beam of the contact at a time of soldering. A gas evolved from the solder escapes through the gap between the circuit board and the bottom of the housing.
Abstract:
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 or the like, comprising the phases of: - making a rigid printed circuit (1) having apertures disposed according to the layout of the output terminals of the control device; - application by screen-printing of a soldering paste onto the locations of the printed circuit corresponding to the terminals to be brought into electrical contact; - preheating of the terminals only of the control device; - assembling of the electrical interconnection plate on the control device with the interposition of a further plate (7) for the thermal protection of the control device itself; - melting of the soldering paste according to a thermal cycle comprising a preheating phase, a melting phase and a succeeding slow cooling phase; and associated programming and monitoring device having output terminals for connectors of the plate-type or the like, electrically interconnected and functionally arranged by means of an interface having a rigid plate electrically connected to said terminals by welding, intended especially for use in washing machines, drying machines and the like.
Abstract:
Disclosed are a light emitting diode (LED) module and a lighting assembly. The lighting assembly comprises a light emitting device, a driver integrated circuit device for driving the light emitting device, a heat sink for dissipating heat generated from the light emitting device, and a heat shielding portion for blocking thermal interference between the driver integrated circuit device and the light emitting device. In the LED module, the driver integrated circuit device is disposed on the heat shielding portion. Accordingly, it is possible to block thermal interference between the light emitting device and the driver integrated circuit device and to decrease the size of the lighting assembly.
Abstract:
Mobile ion diffusion causes a shift in the threshold voltage of non¬ volatile storage elements in a memory chip, such as during an assembly process of the memory chip. To reduce or avoid such shifts, a coating can be applied to a printed circuit board substrate or a leader frame to which the memory chip is surface mounted. An acrylic resin coating having a thickness of about 10 μm may be used. A memory chip is attached to the coating using an adhesive film. Stacked chips may be used as well. Another approach provides metal barrier traces over copper traces of the printed circuit board, within a solder mask layer. The metal barrier traces are fabricated in the same pattern as the copper traces but are wider so that they at least partially envelop and surround the copper traces. Corresponding apparatuses and fabrication processes are provided.
Abstract:
A masking film (3) having desired apertures (2) is applied to a metal wiring board (1). With this construction, a conventional insulation substrate which is to be a thick base and a conventional resist layer can be eliminated. Further, when the terminal parts (T) of the metal wiring board (1) are bent, connection terminals which are substituted for connector terminals for the connection to another board are formed integrally to eliminate the connector terminals. Thus, a low cost component mounting board is provided.
Abstract:
The present invention provides a vertical card connector (12) capable of preventing an undesirable flow of melted solder which destroys proper contacts and of removing a corrosion-causing acid gas. The vertical card connector includes an insulating housing (14) with a plurality of contact terminals (26) and a heat-resisting insulating resin film (28) covering the bottom surface (14b) of the housing. Each contact terminal has a solder tail (26b) extending through film. A slight gap (30a) is created between the heat-resisting film (28) and the bottom surface of the housing. The solder tail of the contact is inserted into a corresponding plated through hole (1a) and soldered there. The film (28) prevents a melted solder from flowing past the solder tail toward a contact beam of the contact at a time of soldering. A gas evolved from the solder escapes through the gap between the circuit board and the bottom of the housing.
Abstract:
An electronic component includes: a first substrate; a second substrate that includes a functional element formed on a lower surface of the second substrate, the second substrate being mounted on the first substrate so that the functional element faces an upper surface of the first substrate across an air gap; and an insulating film that is located on the upper surface of the first substrate, overlaps with at least a part of the functional element in plan view, faces the functional element across the air gap, and has a film thickness that is more than half of a distance between a lower surface of the functional element and the upper surface of the first substrate.
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:
Mobile ion diffusion causes a shift in the threshold voltage of non-volatile storage elements in a memory chip, such as during an assembly process of the memory chip. To reduce or avoid such shifts, a coating can be applied to a printed circuit board substrate or a leader frame to which the memory chip is surface mounted. An acrylic resin coating having a thickness of about 10 μm may be used. A memory chip is attached to the coating using an adhesive film. Stacked chips may be used as well. Another approach provides metal barrier traces over copper traces of the printed circuit board, within a solder mask layer. The metal barrier traces are fabricated in the same pattern as the copper traces but are wider so that they at least partially envelop and surround the copper traces. Corresponding apparatuses and fabrication processes are provided.