Patent ID: 8669777
Filing Date: 2014-03-11
Classification: G01R,H01L,H05K

Abstract:
1. A printed circuit board (PCB) comprising: a multi-layer structure comprising one or more conductive layers and one or more insulating material layers; a conductive thermal pad affixed to the multi-layer structure and adapted to be electrically and mechanically connected to an exposed pad of a component by an intervening connection joint to establish a thermal path to dissipate thermal energy from the component; an isolated test via that extends through the conductive thermal pad in non-contacting relation thereto, the isolated test via adapted to mechanically and electrically contact said intervening connection joint, the isolated test via further extending through the multi-layer structure in non-contacting relation to each of the one or more conductive layers in the multi-layer structure layer; and in which the conductive thermal pad surrounds the isolated test via and is electrically and mechanically isolated therefrom by an intervening annular air gap which extends into the conductive thermal pad.