Hole in pad thermal management

摘要

A device and method of heat sinking a surface mount device (SMD) component. The method includes: forming through holes in a printed circuit board (PCB), electroless plating a first copper layer in the holes, standard plating a second copper layer in the holes and surrounding surfaces of the PCB, masking and pulse plating a third copper layer in the holes, filling the holes with non-conductive material and sanding flush with the second copper layer, electroless plating a fourth copper layer on the PCB over the area of the holes, plating a fifth copper layer (or pad) on the PCB over the area of the holes, and attaching a surface mount device to the fifth copper layer.