Patent ID: 7932596

Claim:
An apparatus comprising: a first electronics chip a core comprising a layer of a material that has an effective coefficient of thermal expansion (CTE) that matches a CTE of the chip better than substantially pure copper does, the core including a first face and an opposed second face; a heat sink mated along the second face of the core; a wiring layer interposed between the chip and the core, the wiring layer having an insulating layer and a plurality of electrically conductive traces separated from the core by the insulating layer, at least the insulating layer is coupled along the first face; and wherein the wiring layer is substantially thinner than the core, some traces of the plurality of electrically conductive traces attached to the electronics chip and other traces of the plurality of electrically conductive traces to attach to external connectors, the electrically conductive traces extend over the first face to external connectors along the first face.