Datasheet

Copyright © 2010-2014 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree
®
, the Cree logo and XLamp
®
are registered
trademarks of Cree, Inc.
5
XLamp
®
mL-B LEDs
TYPICAL SPATIAL DISTRIBUTION
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 Radiation Pattern
0
20
40
60
80
100
-90 -70 -50 -30 -10 10 30 50 70 90
Relative Luminous Intensity (%)
Angle (º)
Thermal Design
0
20
40
60
80
100
120
140
160
180
200
0 25 50 75 100 125 150
Maximum Current (mA)
Ambient Temperature (ºC)
Rj-a = 30°C/W
Rj-a = 40°C/W
Rj-a = 50°C/W
Rj-a = 60°C/W