Patent ID: 7195145

Claim:
A method for assembling an electrical circuit apparatus comprising a substrate having a top side, a ground layer, at least one thermal aperture, and at least one solder aperture, a heat sink, and an adhesive layer having at least one aperture, the method comprising the steps of: aligning the at least one substrate solder aperture with the at least one adhesive layer aperture; mechanically coupling the heat sink to the ground layer of the substrate using the adhesive layer such that none of the at least one substrate thermal aperture overlaps the at least one adhesive layer aperture; filling at least a portion of the at least one substrate solder aperture and at least a portion of the at least one substrate thermal aperture with solder; and performing a process for solder wetting, wherein the aligning of the at least one substrate solder aperture with the at least one adhesive layer aperture causes the solder to flow from the at least one substrate solder aperture to a predetermined area between the heat sink and the ground layer of the substrate.