Composite is cool solution for high-power LEDs
A CPS Corp product story
Edited by the Electronicstalk editorial team Mar 1, 2005
Metal matrix composite is ideal for thermal management of high flux LED products, such as signal lamps, backlighting for signs, low profile luminaires, task lighting and display lighting.
CPS Corp, the worldwide leader in the design and production of metal matrix composites, offers AlSiC (aluminium silicon carbide), a metal matrix composite ideal for thermal management of high flux LED products, such as signal lamps, backlighting for signs, low profile luminaires, task lighting and display lighting.
AlSiC's high thermal conductivity value of 200W/mK provides the thermal management that is critical in the design of high flux LED lamps.
This high thermal conductivity value allows it to achieve maximum brightness in LED lamps at the lowest possible operating temperature.
Unlike copper and aluminium metals that have high thermal expansion values, AlSiC has a low coefficient of thermal expansion (CTE) which minimises thermally induced stress leading to a reduction in the failures of delamination and cracking.
This reduction ultimately improves the reliability of the LED lamp.
With a compatible CTE value, the need for thermal stress compensating interface layers is eliminated.
CPS' net-shape fabrication process both produces the composite material and fabricates the product geometry, including through-hole and threaded hole features.
This cost-effective process allows tight tolerances without the need for expensive machining, and provides high volume assembly yields.
The unique casting process also enables integration of very high thermal conductivity inserts (above 1000W/mK) for high thermal dissipation solutions.
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