Patent ID: 6591897
Filing Date: 2003-07-15
Classification: F28F,H01L,Y10S

Abstract:
A heat sink for electronic devices, said heat sink comprising:a spreader plate having a top surface and having a bottom surface, a portion thereof defined for affixing an electronic device to be cooled thereto; a plurality of columnar pins spaced apart one from the other in a non-uniform manner and affixed to said top surface of said spreader plate substantially perpendicular thereto with each of said pins having a height; and a highly porous heat conducting reticulated foam block substantially filling a space defined by said spaced apart columnar pins; wherein said height of each of said pins is determined by a configuration of said pins, a thermal conductivity of said pins, and a convective heat transfer coefficient of said foam block such that said height of each of said pins is directly related to the type of foam block filling said space between said pins.