Scalable ceramic heat-sink efficiently cools up to 100W/cm²

Scalable ceramic heat-sink efficiently cools up to 100W/cm²

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The compact CeramCool Box from CeramTec is made for homogeneous and efficient cooling of packing densities up to 100W/cm². For example, with an edge length of just 16x40x40mm it has a total cooling capacity of 1600W at 90ºC, which corresponds to a thermal capacity of 1200W.
By eeNews Europe


This translates into a 60K temperature delta to the coolant. The maximum temperature of an LED is just 90°C with a coolant flow rate of 180l/h and an ambient and cooling water temperature of 30°C. This ceramic heatsink offers unlimited scalability in every direction, with the electric conductors placed directly on it and permanently connected to it without thermal barriers and without the risk of delamination. A chip could be directly bonded on the heat-sink too. Four symmetrically arranged spiral condensers with innovative flow paths ensure balanced cooling on the complete surface. The ceramic walls are merely 1mm thick.

This enables the coolant to get closer to the heat source than any other concept with a comparably long system lifetime. The CeramCool Box uses Alunit, an aluminium nitride ceramic material with a thermal conductivity over 170W/mK. In combination with direct metallization for chip on heat-sink mounting, e.g. Ag/Pt, excellent heat transfer from the heat source to the coolant is guaranteed. The number of cooling water connections has been limited to just one inlet and outlet to simplify manageability. The ceramic high-performance heat-sink lets the user choose the coolant and allows for application in aggressive environments.

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