Abstract: Heat pipe technology may be utilized to cool circuit card-mounted electronic components. A heat pipe thermal mounting pipe has a very high thermal conductivity and provides a relatively uniform temperature surface for attaching of circuit card-mounted electronic components. It comprises thin evaporator and condenser wicks (for low temperature gradients) as well as a relatively porous sintered metal artery wick (for high heat transfer capability). The heat sink or other heat exchanger may be mounted at the edge of the thermal mounting plate in the vicinity of the condenser wick. The electronic components are mounted in the vicinity of the evaporator wicks.

Abstract: A micro-electronic package which is capable of operating with power densities extending at least to 10 kilowatts per square centimeter comprises a sealed enclosure coupled to an external heat sink and electronic devices and circuitry within the enclosure. Electrical leads extend from the electronic devices and circuitry to the outside of the enclosure to couple the devices and circuitry into a larger electrical function. A dielectric powder is adhered as a complete and conformal coating substantially to all interior surfaces of the enclosure and to all exposed surfaces of the electronic devices and circuitry, and functions as a heat pipe wick. A dielectric working fluid within the enclosure, therefore, can intimately contact all the interior and exposed surfaces to minimize the occurrence of local hot spots on the electronic devices and circuitry and to maximize heat transfer therefrom to the external heat sink.

Abstract: A micro-electronic package which is capable of operating with power densities extending at least to 10 kilowatts per square centimeter comprises a sealed enclosure coupled to an external heat sink and electronic devices and circuitry within the enclosure. Electrical leads extend from the electronic devices and circuitry to the outside of the enclosure to couple the devices and circuitry into a larger electrical function. A dielectric powder is adhered as a complete and conformal coating substantially to all interior surfaces of the enclosure and to all exposed surfaces of the electronic devices and circuitry, and functions as a heat pipe wick. A dielectric working fluid within the enclosure, therefore, can intimately contact all the interior and exposed surfaces to minimize the occurrence of local hot spots on the electronic devices and circuitry and to maximize heat transfer therefrom to the external heat sink.