Datasheet

Copyright © 2010, 2011 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree, the Cree logo and XLamp are registered trade-
marks of Cree, Inc.
5
XLAMP ML-E LEDS
THERMAL DESIGN
The maximum forward current is determined by the thermal resistance between the LED junction and ambient. It is
crucial for the end product to be designed in a manner that minimizes the thermal resistance from the solder point to
ambient in order to optimize lamp life and optical characteristics.
TYPICAL SPATIAL DISTRIBUTION
0
100
200
300
400
500
600
0 25 50 75 100 125 150
Maximum Current (mA)
Ambient Temperature (ºC)
Rj-a = 20°C/W
Rj-a = 30°C/W
Rj-a = 40°C/W
Rj-a = 50°C/W
0
20
40
60
80
100
120
-100 -80 -60 -40 -20 0 20 40 60 80 100
Relative Luminous Intensity (%)
Angle (º)