Abstract: An arrangement is provided which enables the rapid and effective termination of electrical junctions for an implantable medical device such as a heart pacemaker, a defibrillator, or a cardioverter. A circuit board supporting electronic circuitry is receivable in a housing for the medical device and is provided with a plurality of female connectors on its outer surface. The female connectors are positioned and shaped to receive and guide mating male components into abutting engagement therewith. The mating male components include feedthrough wires which extend between the interior and the exterior of the housing and conductive pins from a battery used to power the medical device. When the male components and female connectors are in abutting engagement, they are fusion welded as by a laser or electron beam.