Patent ID: 6830097
Filing Date: 2004-12-14
Classification: F28D,F28F,H01L

Abstract:
A heat sink for use with a fan for cooling an electronic component wherein the heat sink transfers heat from a heat rejecting surface of the electronic component to a cooling airflow provided by the fan, the heat sink comprising;a heat conducting base member including a substantially planar heat receiving surface for overlaying the heat rejecting surface of the electronic component to receive heat therefrom; a heat conducting tower extending from a side of said base member opposite from said heat receiving surface to receive heat therefrom, the tower including a pair of spaced, oppositely facing fin mount surfaces, the spacing between the fin mount surfaces defining a width of the tower, the fin mount surfaces being planar with the plane of each surface lying within 25Â° of perpendicular to the heat receiving surface, each of the fin mount surfaces having an area larger than the area of the heat receiving surface; and a pair of serpentine fins to transfer heat from the tower to the airflow, each serpentine fin formed from a folded strip of heat conducting material including a plurality of peaks and valleys connected by sidewalls, the valleys of one of the serpentine fins bonded to one of the fin mount surfaces, the valleys of the other serpentine fin bonded to the other fin mount surface.