Heat Sink

It is critical to have proper heatsink for LEDs to maintain the temperature within the specification. Maximum operation temperature of power LED is 150 Celsius degree, however lower is always better. High operation temperature cause reduced life time, reduced brightness and higher voltage drop.

For single starboard, LGA chip heat sink or similar can be used.

http://ledsupply.com/led-heatsink.php

http://www.luxeonstar.com/Thermal-Management-Products-for-High-Power-LEDs-s/84.htm

http://www.cutter.com.au/products.php?cat=Heatsinks

For multiple starboard, bigger heatsink is required. computer CPU heatsink is readily available and good. Intel CPU heatsink without fan or Socket 478 CPU heatsink is good, since they have flat CPU-side surface

http://www.newegg.com/Product/Product.aspx?Item=N82E16835150033

http://www.google.com/products/catalog?q=MASSCOOL+9T288B1M3G&oe=utf-8&client=firefox-a&cid=14019147909413548960#p

For multiple starboard, a strip of aluminum bar is popular.

http://www.heatsinkusa.com/

To reduce the thermal resistance between LED and heatsink, it is recommend to have thermal material such as thermal adhesive tape or thermal epoxy.

http://www.google.com/products/catalog?q=Arctic+Silver+Alumina+AATA-5G&tbm=shop&cid=8530852200908200294#

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