Datasheet

66
Copyright © 2013-2015 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree
®
, the Cree logo, XLamp
®
and EasyWhite
®
are registered trademarks of Cree,
Inc. UL
®
and the UR logo are registered trademarks of UL LLC.
6
XLamp
®
mK-R2 LED
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
50
100
150
200
250
300
350
400
450
0 20 40 60 80 100 120 140
Maximum Current (mA)
Ambient Temperature (ºC)
Rj-a = 2°C/W
Rj-a = 4°C/W
Rj-a = 6°C/W
Rj-a = 8°C/W