Abstract: A semiconductor chip carrier and contact array package having an apertured dielectric bottom layer (11), one or more chip connection layers such as wire bond layers (16, 17) insulated from one another, at least one chip-holding recess (24) in the wire bond layers and a heat conductive copper heat sink insert (26) extending across the aperture of the dielectric layer and forming a base adapted to be in heat-conductive contact with the bottom of an integrated circuit chip (27) to be attached thereon whereby heat flux generated by the chip is quickly and efficiently removed from the chip body. The wire bond layers (16, 17) contains metallization patterns (29) for bonding to the chip and a grid array of contacts or connection pins (20) connected to plated through-holes in the wire bond layer(s) for plugging the carrier to a circuit board or the like.