Post date: Apr 24, 2014 9:45:4 PM
Transistor 7/10 V diode drop, 0.7 W, not too much heat should be going through
Measure the current/resistance/voltage through all the components and calculate the current to see if the battery will last
See if most of the power dissipation is through the transistor or the LEDs
Look into whether or not there will be a PCB fatigue problem with different materials on the LEDs and PCB
Thermal expansion mismatch with PCB, LEDs, and heat sink
Sarcon and Fuji Putty, compliant
Small fan above PCB, made by Sunon