Lumileds CS HE Chip on Board (CoB) LEDs are LEDs that offer very high efficacy, superior quality of light, and ease of design footprints. The LUXEON CoB technology delivers unmatched performance, quality of light, and uncompromising product quality. These Lumileds LEDs are RoHS compliant and are suitable for track lights, spotlights, downlights, high bay, and low bay.