XB-D Datasheet, PDF (12/19 Pages) Cree, Inc – XLamp XB-D LEDs

XLamp^® XB-D LED
Thermal Design
Thermal
white
royal blue, blue
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.
1200
White
1000
1200
Royal Blue, Blue
1000
800
800
600
600
green
400
200
0
0
Rj-a = 10°C/W
Rj-a = 15°C/W
Rj-a = 20°C/W
Rj-a = 25°C/W
20
40
60
80
100
120
Ambient Temperature (ºC)
140
160
amber
400
200
0
0
Rj-a = 10°C/W
Rj-a = 15°C/W
Rj-a = 20°C/W
Rj-a = 25°C/W
20
40
60
80
100
120
140
160
Ambient Temperature (ºC)
1200
Green
1000
800
600
400
Rj-a = 15°C/W
200
Rj-a = 20°C/W
Rj-a = 25°C/W
0
0
20 ^red-o40^{range, re}6^d0
80
100
120
140
160
Ambient Temperature (ºC)
1200
Amber
1000
800
600
400
Rj-a = 10°C/W
Rj-a = 15°C/W
200
Rj-a = 20°C/W
Rj-a = 25°C/W
0
0
20
40
60
80
100
120
140
160
Ambient Temperature (ºC)
1200
1000
800
600
400
200
0
0
Red-Orange, Red
Rj-a = 10°C/W
Rj-a = 15°C/W
Rj-a = 20°C/W
Rj-a = 25°C/W
20
40
60
80
100
120
140
160
Ambient Temperature (ºC)
Copyright © 2011-2016 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree^® and XLamp^® are registered trademarks and the Cree logo is a trademark of
Cree, Inc UL^® and the UR logo are registered trademarks of UL LLC.
12