Abstract: Very compact, low cost power semiconductor device modules suitable for use in variable speed motor controllers multiple solenoid drivers, and the like are provided by attaching pre-packaged (e.g., type TO-220) semiconductor devices by their heat dissipation surfaces to opposed planar faces of a metal heat conduction plate using an electrically insulating and thermally conductive epoxy. By proper choice of the heat conduction plate thickness and the device-to-device spacing thereon, the leads of the pre-packaged devices can be arranged to have, on the modules, the same lead-to-lead and row-to-row spacing as for common JEDEC DILIC packages so that the modules fit on a conventional package footprint when mounted on a circuit board.

Abstract: Single package, electrically isolated dual, triple, quad, etc., power semiconductor devices are provided without use of ceramic or other isolators between the semiconductor die and the die support. For example, isolated dual power transistors, each having three leads, are encapsulated within the same package outline and lead footprint as a seven lead TO-218 or TO-220 by dividing the die flag into two spaced-apart portions, one for each die, connecting the first three leads to the first transistor and die flag, connecting the last three leads to the second transistor and die flag, and omitting the centrally located fourth lead. The spaced-apart die flags and leads are supported by a molded encapsulation.

Abstract: Very compact, low cost power semiconductor device modules suitable for use in variable speed motor controllers multiple solenoid drivers, and the like are provided by attaching pre-packaged (e.g., type TO-220) semiconductor devices by their heat dissipation surfaces to opposed planar faces of a metal heat conduction plate using an electrically insulating and thermally conductive epoxy. By proper choice of the heat conduction plate thickness and the device-to-device spacing thereon, the leads of the pre-packaged devices can be arranged to have, on the modules, the same lead-to-lead and row-to-row spacing as for common JEDEC DIL-IC packages so that the modules fit on a conventional package footprint when mounted on a circuit board.