The REBEL-STAR-ES-8PW50 is a cool white Luxeon Rebel Starboard High Brightness LED designed for illumination applications. It has custom MCPCB structure that further enhances heat dissipation and thus enabling the LED to last according to its life time. LUXEON Rebel ES is tested and binned at 700mA, with current pulse duration of 20ms. All characteristic charts where the thermal pad is kept at constant temperature are measured with current pulse duration of 20ms. Lumen maintenance for solid state lighting devices (LEDs) is typically defined in terms of the percentage of initial light output remaining after a specified period of time.