Datasheet

22
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®
, 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
®
CXa1816 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 900*
Reverse current mA 0.1
Forward voltage (450 mA, 85 °C) V 36.2
Forward voltage (450 mA, 25 °C) V 42
* Refer to the Operating Limits section.
OPERATING LIMITS
The maximum current rating of the CXA1816 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 16 for the location of the Tc measurement point.
CXA1816
0
100
200
300
400
500
600
700
800
900
1000
0 25 50 75 100 125 150
If (mA)
Case Temperature (°C)