Abstract:
Electronic circuit device (100) includes sub-board (108) disposed upright on main board (126). Sub-board (108) is electrically coupled to main board (126) via board terminal (130) disposed at sub-board edge. Semiconductor element (104) is mounted on sub-board (108) facing sub-board (108) in parallel. Temperature sensor (116) is also mounted on sub-board (108). Heat sink (118) is formed so as to surround sub-board (108) and semiconductor element (104). Resin material (122) is injected inside heat sink (118) so as to cover sub-board (108), temperature sensor (116), and semiconductor element (104).
Abstract:
An electronic part-mounted substrate (1) includes a plate made of metal, an insulating material layer (4) which is formed of a ceramic material on a surface of the plate and which has a surface provided with a heat generating IC (5,6) thereon, and a thermal conductive member which is provided on a surface of IC. The heat, which is generated by IC (5,6) , is transmitted via the thermal conductive member (80) to the insulating material layer (4) and the plate, and the heat is dissipated to the outside. The heat generated by the electronic part can be dissipated more efficiently. The substrate is applicable to a liquid-jetting head.
Abstract:
In resin-molded engine control unit, a coil (7), an electrolytic capacitor (8), a microprocessor (9), electronic parts and a connector terminal (1, 2) are mounted on a board (5). Inside a cover (6) fixed on the board (5), a resin-free region (12) is formed. The coil (7), the electrolytic capacitor (8) and the microprocessor (9), which should not be sealed with resin (3), are mounted in the resin-free region (12), while the board (5) and the electronic parts which are not capped by the cover (6) are sealed with a resin (3).
Abstract:
A circuit board assembly (40,50) having a laminate construction of multiple layers (12), such as a LTCC ceramic substrate (10), with conductor lines (30) between adjacent pairs of layers (12). A heat sink (22) is bonded to a first surface (26) of the substrate (10), and a cavity (24) is defined by and between the heat sink (22) and the substrate (10) such that a base wall (28) of the cavity (24) is defined by one of the layers (12) with conductor lines (30) thereof being present on the base wall (28). A surface-mount circuit device (14) is received within the cavity (24), mounted to the base wall (28), and electrically connected to the conductor lines (30) on the base wall (28). The device (14) is received within the cavity (24) such that a surface of the device (14) contacts a surface region of the heat sink (22). The surface of the device (14) is bonded to the surface region of the heat sink (22) to provide a substantially direct thermal path from the device (14) to the heat sink (22).
Abstract:
The present invention relates to a substantially package-like discrete electronic component of the type comprising a power electronic circuit, a body or casing (2), substantially parallelepiped, and electric connecting pins (3) connected inside the body with said circuit and projecting from said body (2) for an electric connection on the electronic printed circuit board (4). The body (2) has a heat dissipating header (5) having at least one surface emerging from the body (2) and laying on a plane (P) whereas the pins (3) project from the body (2) for a first section initially extended parallelly to the plane (P). Advantageously a pair (7, 8) of pins (3) has a substantially U-shaped bending, after the first section parallel to the plane (P) for allowing a more stable bearing of the component (1) during the step of welding to a heat dissipating intermediate die (9).
Abstract:
A power converter assembly includes a heat sinking plate, a circuit board structure having a side that faces and is spaced by a gap from a surface of the heat sinking plate that is nearer to said side, a relatively thin, high heat density, dissipative semiconductor component mounted on said side, an encapsulating material filling the gap, and relatively taller, lower heat density, components mounted on the other side of the circuit board, the gap being characterized by an average thermal-resistance of less than 1 °C - in 2 /Watt.
Abstract:
A heat dissipater (30) of a metallic or metal material is disposed in parallel relationship to a circuit board (12) . The assembly is characterized by the circuit board 12 presenting a hole (32) therethrough and surrounding each of a plurality of LEDs (20, 22 or 24). A heat sink (28) integral with each LED (20, 22 or 24) is disposed in thermal contact with the heat dissipater (30) for conveying heat from the LEDs (20, 22 and 24) to the heat dissipater (30) . In other words, each LED (20, 22 or 24) extends through the hole (32) in the circuit board (12) with the light emitting portion or lens (34) extending from one of the surfaces (14 or 16) of the circuit board (12) and the heat sink (28) extending from the other one of the surfaces (14 or 16) of the circuit board (12). A thermal coupling agent (36 or 38) is disposed between the heat sink (28) and the heat dissipater (30) for providing a full thermal path between the heat sink (28) and the heat dissipater (30). In Figure 3, the first surface (14) of the circuit board (12), with the electrical leads (26) soldered or adhesively attached to the traces (18) thereon, faces the heat dissipater (30). The circuit board (12) is spaced from the heat dissipater (30) and, in Figure 3, the traces (18) face the heat dissipater. A step in the fabrication of the present invention is the disposing of a thermally insulating cap (40) around the heat sink (28) while disposing the LED (24) on the circuit board (12) to protect the LED from damage during soldering.