This is a part number for Philips Lumileds Luxeon CoB LEDs (chip-on-board light-emitting diodes). These LEDs are capable of producing bright, consistent light across a wide variety of applications, including auto, industrial, medical, homeland security, and home lighting. They feature an array of optics, colors, and densities, providing multiple options for lighting designers. Additionally, the Luxeon CoB LEDs offer consistent performance over time and in varying temperatures.