L-shaped heat spreader of thermally conductive material encapsulated in metal for connection between electronic package and heat sink

摘要

An electronic package (10) designed to be mounted in a space vehicle includes active electronic components that produce heat energy during operation and has a shear plate (12) attached to a heat sink (13) or heat pipe (14). A heat spreader (11) includes an L-shaped plate, preferably of thermal pyrolitic graphite encapsulated in aluminum, which has a long arm (20) attached to the shear plate (12) by a heat conductive adhesive and a short arm (21) attached to the heat sink (13) for transferring heat energy from the package (10) to the heat sink (13). The heat sink (13) and the package (10) produce a dynamic load and the heat sink (13) and the package (10) are designed to carry the dynamic load with the heat spreader (11) providing only thermal enhancement.