CeramTec's CeramCool® is the ideal heat-sink for high-power LEDs. This is just one area where CeramCool demonstrates its ability to handle even the highest peaks in performance.

Heat-sensitive semi-conductor components are often mounted onto substrates. These substrates need to provide electrical insulation while at the same time ensuring adequate thermal conductivity. The result is often a kind of “sandwich” with multiple layers made from different materials. Each layer poses an additional obstacle to thermal conductivity. CeramCool® transforms the substrate into a heat-sink itself. This makes things much simpler.

CeramCool® can be coated directly with thick or thin film processes such as conventional ceramic substrates. This makes the surface of the heat-sink useable as a circuit carrier while providing reliable electrical insulation.

A high-power LED housing generally has a metallic surface in addition to the electrical connections through which heat dissipates. This surface can now be directly and reliably soldered onto the heat-sink with metallization pads that are bonded directly to the CeramCool® heat-sink. There is no need to settle for compromises such as clamping or gluing the high-power LED.

Until now, many different materials have been used for the overall construction, which simultaneously translates into numerous production steps. CeramCool® makes it possible to simplfiy this process by loading the heat-sink, which is printed with circuits, in much the same way as a circuit board and restoring it to a functioning overall construction in a reflow process. The process can be even further simplified by bonding the chip directly onto the specially designed CeramCool® metallic surface. Chip on heat-sink! Compact and simple.

CeramCool® can be enhanced with proven techniques such as thin and thick-layer technology. No new production methods or technologies are required. This allows you to implement qualified processes and materials proven through decades of use in high-tech applications in the area of power electronics or in the aviation and automotive industry. When mounted properly, ceramics are exceptionally stable and mechanically robust.

CeramCool® is made from proven ceramic materials such as Rubalit 708®, Rubalit 710® or Alunit®. These materials have a thermal expansion coefficient that is adapted to semi-conductor materials, they possess excellent electrical characteristics and are at the same time corrosion-resistant. The simplified construction (without glues, insulation layers, etc.) combined with a direct and permanent bond between the high-power LED and CeramCool® create ideal operating conditions for the entire assembly. Put simply: What isn’t there won’t wear out and materials that expand in proportion to each other won’t separate. The result is excellent long-term stability, secure thermal management and exceptional reliability. Component life increases. www.ceramtec.com