High Thermal Conductivity Composite Substrate
Original Publication Date: 1986-Apr-01
Included in the Prior Art Database: 2005-Mar-08
A composite substrate is constructed of any of a variety of materials, e.g., ceramic, phenolic, polyamide, or high thermal conductivity composites and cladded together with a perforated copper or aluminum sheet to enhance the thermal efficiency of the substrate and permit a chip junction to operate at a cooler temperature. The composite substrate 1, as seen in the drawing, is positioned with the printed circuitry 2 on the top side. The printed circuitry 2 is attached to heads of pins 3 which go through substrate 1 and coincide with the perforations 4 on copper or aluminum sheet 5 to be cladded to substrate 1. The sheet 5 is attached to substrate 1 with silver epoxy, dry-film epoxy, or any other suitable high conductivity adhesive.