Patent ID: 6920688

Claim:
A method for a semiconductor assembly having a semiconductor die having exterior leads extending therefrom comprising: forming a package using a material, said package having opposing major surfaces, a peripheral edge having a register portion therein and a portion of said exterior leads connected to said semiconductor die projecting therefrom; forming a pair of heat spreaders, said pair of heat spreaders having at least two posts extending therefrom for contacting at least a portion of a substrate, each heat spreader of said pair of heat spreaders configured to cover a portion of one of said opposing major surfaces, said pair of heat spreaders providing essentially a sole structural support for at least one of said exterior leads, said pair of heat spreaders each comprising a register portion on at least one peripheral edge thereof for accurate mounting to said opposing major surfaces; attaching said pair of heat spreaders to said opposing major surfaces of said package formed by said material by aligning each of said register portion of said pair of heat spreaders with said register portion of said package to form a recess extending into said opposing major surfaces and each of said pair of heat spreaders; and positioning said pair of heat spreaders so as to provide an opening between distal end portions thereof when forming a final package having portions of said pair of heat spreaders extending therefrom.