Datasheet

Copyright © 2006-2009 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.
7 CLD-DS05.011
Cree, Inc.
4600 Silicon Drive
Durham, NC 27703
USA Tel: [phone]
www.cree.com/xlamp
Electrical Characteristics (T
J
= 25˚C)
Thermal Design
The maximum forward current is determined by the thermal resistance between the LED junction and ambient. Given
an existing thermal resistance of 8°C/W between the junction and the solder point, 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.
White ≥ 5,000 K, Royal Blue, Blue
White < 5,000 K, Green
Thermal Design
Cool White
0
100
200
300
400
500
600
700
800
900
1000
0.0 1.0 2.0 3.0 4.0 5.0
Forward Voltage (V)
Forward Current (mA)
0
200
400
600
800
1000
1200
0 25 50 75 100 125 150
Ambient Temperature (°C)
Maximum Current (mA)
Rj-a = 10°C/W
Rj-a = 15°C/W
Rj-a = 25°C/W
Rj-a = 35°C/W
Thermal Design
Cool White, Royal Blue & Blue
Cool White
0
200
400
600
800
1000
1200
0 25 50 75 100 125 150
Ambient Temperature (°C)
Maximum Current (mA)
Rj-a = 10°C/W
Rj-a = 15°C/W
Rj-a = 20°C/W
Rj-a = 25°C/W
Neutral White, Warm White & Green
Neutral White, Warm White, Blue, Royal Blue and Green
Relative Intensity vs. Current (Tj = 25ºC)
0
100
200
300
400
500
600
700
800
0 25 50 75 100 125 150
Ambient Temperature (°C)
Maximum Current (mA)
Rj-a = 10°C/W
Rj-a = 15°C/W
Rj-a = 25°C/W
Rj-a = 35°C/W