A COB LED is an integrated assembly of LED dies on a thermally conductive substrate, such as a metal-core printed circuit board (MCPCB) or ceramic. COB is an acronym for “chip-on-board”. Available in wattages of up to 200+ W, the multi-die LED array creates a light emitting surface (LES) with high flux density and high beam uniformity that is not possible with discrete high-power, mid-power, and CSP LED packages. Packing enough of a punch in the beam and designed for direct heat sink integration, COB LEDs deliver value beyond just being LED packages to simplify lighting system integration. This contrasts with SMD LED packages that have to be mounted on a printed circuit board to create the light engine. The ability to deliver powerful lumen packages and high uniformity illumination lends COB LEDs to a variety of indoor and outdoor applications. Their footprint is frequently found in high power LED systems such as high bay lights, flood lights and street lights. This type of LED packages has established its strongest foothold in directional lighting applications where a uniform beam with the highest punch possible is required. The most common use of directional lighting is for creating focal points and visual interest, which is served by accent lights such as recessed downlights, surface mount spotlights and track-mounted luminaires. COB LEDs are also incorporated in task luminaires to provide focused, localized illumination necessary to the functioning of a space.
at the Open Lighting Product Directory (OLPD)
