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Heat sinks keep high-power LEDs cool

Posted: 18 Jan 2008 ?? ?Print Version ?Bookmark and Share

Keywords:heat sinks? conductive heat transfer? LED cooling?

Advanced Thermal Solutions Inc. (ATS) has introduced the Star series of heat sinks designed specifically for cooling higher power, surface-mount power LED packages. The 32 new Star heat sinks provide enhanced conductive heat transfer for effective LED cooling without fans or blowers. Cooling performance in the series reaches more than 60 K at up to 16 watts of power dissipation.

All Star heat sinks are made from aluminum in a cylindrical shape that fits common LED lamp applications. Their cooling fins are arrayed in a round, star-like cross section that optimizes thermal performance through radiative cooling to the local air flow, explained ATS. A flat surface at one end of the heat sink provides a base for direct mounting of LEDs, and integral threads on the base perimeter allow attachment of brackets and other hardware. All standard sizes are available with an inner thread for convenient attachment of LED lens mounts.

The Star heat sinks are available in 25-, 45-, 50- and 75-mm (0.98-, 1.77-, 1.96- and 2.95-inch) lengths with a standard diameter of 45mm (1.77-inch). Each heat sink features a black anodized finish that provides corrosion resistance, electrical insulation, and improved thermal performance. All Star series heat sinks are RoHS compliant.

Pricing starts at less than $8 each in production quantities.

- Gina Roos

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