Apparatus and method for transferring heat from an electrical module

1. An apparatus for transferring heat from an electrical module; the apparatus comprising:

(a) a thermally conductive base member; said base member having a plurality of edges establishing a polygonal perimeter and having a first side for presentation toward said electrical module;

(b) a heat transferring structure integrally formed with said base member; said heat transferring structure extending from a second side of said base member opposite from said first side; said heat transferring structure occupying less than all of said second side and establishing a margin substantially about said perimeter; and

(c) an insulative layer affixed with said first side; said insulative layer substantially covering said first sides;

said electrical module including a plurality of component parts affixed to a first face of a substrate; selected component parts of said plurality of component parts extending further from said first face than other component parts of said plurality of component parts than said selected component parts; said first side of said base member being contoured to accommodate at least one of said selected component parts; said contour reducing average distance between said plurality of component parts and said first side when the apparatus is affixed with said module than would occur if said first side were not contoured; at least one component part of said plurality of component parts comprising an individual heat transferring component; said individual heat transferring component being oriented facing the apparatus when the apparatus is affixed with said module; said substrate including a plurality of substrate layers; at least two substrate layers of said plurality of substrate layers having a thermal path leading to an edge locus for transferring inter-layer heat; said individual heat transferring component being thermally coupled with said edge locus.

2. A heat sink apparatus for use with an electrical device having a plurality of component parts affixed to a first face of a generally planar substrate;

selected component parts of said plurality of component parts extending further from said first face than other component parts of said plurality of component parts than said selected component parts; the apparatus comprising: a thermally conductive base member having a plurality of edges establishing a polygonal perimeter; said base member having a first side for presentation toward said electrical device when said base member is assembled with said electrical device; said base member having a second side with an integrally formed heat transferring structure extending an extension distance away from said first side; said first side of said base member being contoured to accommodate at least one of said selected component parts; said contour reducing average distance between said plurality of component parts and said first side when the apparatus is affixed with said module to less than would occur if said first side were not contoured; said heat transferring structure establishing a margin substantially about said perimeter; said extension distance being less in said margin than in a region substantially adjacent to said margin; and an insulative layer affixed with said first side; said insulative layer substantially covering said first side; said substrate including a plurality of substrate layers; at least two substrate layers of said plurality of substrate layers having a thermal path leading to an edge locus for transferring inter-layer heat; at least one component part of said plurality of component parts being thermally coupled with said edge locus.