Thermally coupling an integrated heat spreader to a heat sink base

摘要

The base of a heat sink may be selectively plated with a solder wetting material and soldered to an integral heat spreader also selectively plated with gold. In another embodiment, the solder may be applied in the form of an insert made up of an electrical heating wire sandwiched between indium foil which acts as solder when heated by the intervening wire.