Abstract: A method for cooling electrical components on a substrate during a rework process. A block of a porous, thermally conductive material, saturated with a liquid, is positioned on an electrical component to be cooled. During the rework processing of an adjacent electrical component, the liquid in the porous, thermally conductive block vaporizes, thereby maintaining the temperature of the electrical component below its reflow temperature. A second thermally conductive block, in thermal contact with the porous, thermally conductive block, and the substrate on which the electronic component to be cooled is attached, is positioned between the electronic component to be cooled and the electronic component undergoing rework. A supply of liquid is provided to the porous, thermally conductive block to maintain the temperature of the electronic component to be cooled at a predetermined level for a specified period of time.

Abstract: A method and apparatus for cooling electrical components on a substrate during a rework process. A block of a porous, thermally conductive material, saturated with a liquid, is positioned on an electrical component to be cooled. During the rework processing of an adjacent electrical component, the liquid in the porous, thermally conductive block vaporizes, thereby maintaining the temperature of the electrical component below its reflow temperature. A second thermally conductive block, in thermal contact with the porous, thermally conductive block, and the substrate on which the electronic component to be cooled is attached, is positioned between the electronic component to be cooled and the electronic component undergoing rework. A supply of liquid is provided to the porous, thermally conductive block to maintain the temperature of the electronic component to be cooled at a predetermined level for a specified period of time.