摘要:
A semiconductor device comprising a film substrate and a semiconductor chip bonded to an upper surface of the film substrate is provided. The semiconductor chip has a main surface formed with a plurality of terminal pads. The film substrate has a lower surface formed with a plurality of external terminal portions in a matrix pattern, and an upper surface formed with a plurality of wiring patterns for respectively connecting with the external terminal portions. The wiring patterns formed in the upper surface of the film substrate are respectively connected to the terminal pads formed on the main surface of the semiconductor chip.
摘要:
A method of manufacturing semiconductor devices in which a multi-series lead frame that is constructed so as to assemble semiconductor elements in a state that these elements are arrayed in a plurality of series along the longer sides of the lead frame, is set in a mold, and molding resin is injected into cavities of the mold, to thereby form packages for packing the semiconductor elements in a sealing manner. In the method, a resin tablet is positioned so that resin paths are extended at substantially equal lengths to the cavities on the lead frame set in the mold, and the molding resin is injected into the cavities disposed around the resin tablet by pressing the resin tablet with a plunger.
摘要:
Variable swirl intake apparatus (24) controls a swirl of intake air in cylinder chamber (22) of an engine. Variable swirl intake apparatus (24) has intake port (25) which has entrance portion (25a) formed on cylinder head (23) of the engine and extending from the side surface of cylinder head (23) and swirl chamber (25b) which communicates with entrance portion (25a) and is formed to provide a swirl to a gas flow flowing from entrance portion (25a), intake valve (26), arranged on the lower surface of cylinder head (23), for opening/closing between swirl chamber (25b) and cylinder chamber (22) of the engine, swirl control path (28), one end of which is open to swirl chamber (25a) on the side of entrance portion (25a) with respect to a line connecting the axis along a piston sliding direction at the center of cylinder chamber (22) and the axis of the intake valve, and the other end of which is open to the side surface of cylinder head (23), and a control apparatus (29) for controlling a gas flow into swirl control path (28). According to variable swirl intake apparatus (24), a swirl of a gas taken in the engine can be controlled in accordance with an operating condition of the engine so as to reduce NO.sub.x and a fuel consumption rate.
摘要:
A meter for integrating the operating time of a steam trap including an integrating instrument consisting of a transparent vessel containing an electrolyte between two columns of mercury across which a DC voltage may be applied and a thermocouple including a hot junction and a cold junction connected to said instrument, wherein temperatures sensed by the hot junction causes displacement of the mercury and movement of the electrolyte in order to provide an indication of changes in temperature in a steam trap assembly.