Use of this assembly requires careful attention to mounting and cooling to ensure that the junction temperature of the LEDs is kept well below the maximum rating as specified in the LED documentation published by Philips Lumileds.
While our Pre-Cut, Thermal Adhesive Tape for 20mm Tri-Star Bases
is suitable for mounting this assembly to a finned heat sink, for optimal cooling we recommend that the assembly be fastened to the heat sink using Arctic Silver™ Thermal Adhesive
. The bottom of the LED assembly is electrically neutral, so it is not necessary to electrically isolate the LED base from the cooling surface.
You need to confirm that the assembly is being adequately cooled by testing the temperature of each LED as described in the Measuring LED Junction Temperature section of the CoolBase Datasheet