Datasheet

22
Copyright © 2012-2015 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.
2
XLamp
®
CXa2520 LED
CHARACTERISTICS
Characteristics Unit Minimum Typical Maximum
Viewing angle (FWHM) degrees 115
ESD withstand voltage (HBM per Mil-Std-883D) V 8000
DC forward current mA 1250*
Reverse current mA 0.1
Forward voltage (@ 550 mA, 85 °C) V 35
Forward voltage (@ 550 mA, 25 °C) V 42
* Refer to the Operating Limits section.
OPERATING LIMITS
The maximum current rating of the CXA2520 is dependent on the case temperature (Tc) when the LED has reached
thermal equilibrium under steady-state operation. The graph shown below assumes that the system design employs
good thermal management (thermal interface material and heat sink) and may vary when poor thermal management is
employed. Please refer to the Mechanical Dimensions section on page 18 for the location of the Tc measurement point.
CXA2520
0
250
500
750
1000
1250
1500
0 25 50 75 100 125 150
If (mA)
Case Temperature (°C)