Binning and Labeling

Cree XLamp 4550 LEDs combine the brightness of power LED chips with a rugged package

capable of operating in excess of half of a watt. XLamp LEDs lead the solid-state lighting

industry in brightness while providing a reflow solderable design that is optimized for

ease-of-use and thermal management. Lighting applications featuring XLamp LEDs

maximize light output and increase design flexibility, while minimizing environmental

impact.

This application note describes Cree’s procedures for sorting XLamp 4550 LEDs by color (dominant wavelength) and

brightness (luminous or radiant flux) and then lists the order codes encompassing these color and brightness groups

for easy reference.

Nomenclature

XLamp LEDs are tested and sorted into performance bins. A bin is specified by ranges of dominant wavelength and

brightness. Sorted XLamp LEDs are packaged on reels. A reel contains lamps from one bin and is labeled with its bin

code. For more information on packaging see the XLamp 4550 Data Sheet.

XLamp LEDs are sold by order codes in combinations of bins called kits. Kits include a minimum of two dominant

wavelength groups and two brightness groups. Order codes are configured in the following manner:

Family

Color

Spatial Pattern

Viewing Angle

(degrees)

Kit #

Combination of

bins

XL4550

ROY

L – Lambertian

100

0001-9999

BLU

GRN

AMB

RED

XLamp LED order codes specify package family, color, optical configuration (spatial pattern and viewing angle) and

kit number (combination of bins).

Kit number 0001 is always the order code encompassing the broadest range of color and brightness groups.



Subject to change without notice.

www.cree.com/xlamp