Abstract: An overmolded electronic module and a method for forming the module. The method entails both overmolding a circuit board and underfilling one or more surface-mount circuit devices physically and electrically connected to the board with solder bump connections. The circuit board is supported on a heatsink that thermally contacts a surface of the device opposite the circuit board. The board is optionally then encased on the heatsink with a retainer that includes means for biasing the circuit device against the heatsink. Finally, the circuit board is overmolded with a polymeric material to form an overmolded body that encases the circuit board and the circuit device with the heatsink. The overmold process is carried out so that a portion of the overmolded body completely underfills the circuit device and encapsulates its solder bump connections.

Abstract: An overmolded electronic assembly (10) and method for forming the assembly (1) that entails enclosing a circuit board (12) having one or more circuit devices (16) mounted to its surface. The assembly (10) includes a heat-conductive member (18) in thermal contact with one or more of the circuit devices (16) mounted to the circuit board (12). An overmolded body (22) encloses the circuit board (12) and the circuit devices (16) with the heat-conductive member (18), such that the overmolded body (22) and heat-conductive member (18) form a moisture-impermeable seal around the circuit board (12) and circuit devices (16). The overmolded body (22) also includes a connector housing (28) integrally-formed in its outer surface. The method for manufacturing the overmolded electronic assembly (10) generally entails supporting the circuit board (12) with the heat-conductive member (18) such that the heat-conductive member (18) thermally contacts the circuit devices (16).

Abstract: A method and assembly for mounting an IC semiconductor device to a substrate using flip chip technology. The assembly generally entails a flip chip having a first surface, an oppositely-disposed second surface, an integrated circuit that includes a vertical device on the first surface, and an electrical contact for the vertical device on the second surface. The flip chip is bonded with first solder connections to a first conductor pattern on a substrate, so that the first solder connections electrically and mechanically connect the flip chip to the substrate. The assembly further includes an electrical contact member that is positioned so that the flip chip is between the contact member and the substrate. The contact member is electrically and mechanically connected to a second conductor pattern on the substrate with second solder connections. A third solder connection electrically and mechanically connects the contact member to the electrical contact on the second surface of the flip chip.

Abstract: An overmolded electronic assembly (10) and method for forming the assembly (1) that entails enclosing a circuit board (12) having one or more circuit devices (16) mounted to its surface. The assembly (10) includes a heat-conductive member (18) in thermal contact with one or more of the circuit devices (16) mounted to the circuit board (12). An overmolded body (22) encloses the circuit board (12) and the circuit devices (16) with the heat-conductive member (18), such that the overmolded body (22) and heat-conductive member (18) form a moisture-impermeable seal around the circuit board (12) and circuit devices (16). The overmolded body (22) also includes a connector housing (28) integrally-formed in its outer surface. The method for manufacturing the overmolded electronic assembly (10) generally entails supporting the circuit board (12) with the heat-conductive member (18) such that the heat-conductive member (18) thermally contacts the circuit devices (16).

Abstract: A multi-chip module that incorporates multiple flip chip (16) mounted on a daughter board (12), which in turn is flip-chip mounted onto a product mother board (10). The daughter board (12) is preferably a silicon substrate having solder bump terminals (14) and at least one conductor pattern on a surface thereof. The surface of the daughter board (12) may also have conductive runners and any passive electronic components required by the module. Mounted to the conductor pattern of the daughter board (12) are the flip chips (16) having solder bump terminals (18) that are registered and soldered to the conductor pattern of the daughter board (12). The solder bump terminals (14) of the daughter board (12) are then registered and soldered to a complementary conductor pattern on the mother board (10), such that the flip chips (16) are disposed between the daughter board (12) and the mother board (10).

Abstract: Thin circuit pathways of an electronic circuit are integral with thick terminal pins. The thin and thick portions are stamped, formed and chemically etched from a single sheet of copper or copper alloys, and mounted on a substrate to eliminate the need of a separate header. Components are soldered to the thin pathways in the conventional manner and a housing is molded to the circuit or a preformed housing is attached to the circuit. In another embodiment, a filtered header which contains thin circuit pathways integral with thick terminal pins is formed in the same manner and includes filtering components.

Abstract: A multi-chip module that incorporates multiple flip chip (16) mounted on a daughter board (12), which in turn is flip-chip mounted onto a product mother board (10). The daughter board (12) is preferably a silicon substrate having solder bump terminals (14) and at least one conductor pattern on a surface thereof. The surface of the daughter board (12) may also have conductive runners and any passive electronic components required by the module. Mounted to the conductor pattern of the daughter board (12) are the flip chips (16) having solder bump terminals (18) that are registered and soldered to the conductor pattern of the daughter board (12). The solder bump terminals (14) of the daughter board (12) are then registered and soldered to a complementary conductor pattern on the mother board (10), such that the flip chips (16) are disposed between the daughter board (12) and the mother board (10).