Datasheet

1313
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®
, the Cree logo and XLamp
®
are registered
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®
and the UR logo are registered trademarks of UL LLC.
13
xlamp
®
xp-e2 leds
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.
White Royal Blue, Blue
Green Amber
PC Amber Red-Orange, Red
0
200
400
600
800
1000
1200
0 20 40 60 80 100 120 140
Maximum Current (mA)
Ambient Temperature (ºC)
Rj-a = 10°C/W
Rj-a = 15°C/W
Rj-a = 20°C/W
Rj-a = 25°C/W
Thermal Design - royal blue - same as blue
0
200
400
600
800
1000
1200
0 20 40 60 80 100 120 140
Maximum Current (mA)
Ambient Temperature (ºC)
Rj-a = 10°C/W
Rj-a = 15°C/W
Rj-a = 20°C/W
Rj-a = 25°C/W
Thermal Design - amber
0
200
400
600
800
1000
1200
0 20 40 60 80 100 120 140
Maximum Current (mA)
Ambient Temperature (ºC)
Rj-a = 10°C/W
Rj-a = 15°C/W
Rj-a = 20°C/W
Rj-a = 25°C/W
Thermal Design - green
0
200
400
600
800
1000
1200
0 20 40 60 80 100 120 140
Maximum Current (mA)
Ambient Temperature (ºC)
Rj-a = 20°C/W
Rj-a = 25°C/W
Rj-a = 30°C/W
Rj-a = 35°C/W
Thermal Design - red-orange, red
0
200
400
600
800
1000
1200
0 20 40 60 80 100 120 140
Maximum Current (mA)
Ambient Temperature (ºC)
Rj-a = 10°C/W
Rj-a = 15°C/W
Rj-a = 20°C/W
Rj-a = 25°C/W
Thermal Design - PC amber
0
200
400
600
800
1000
1200
0 20 40 60 80 100 120 140
Maximum Current (mA)
Ambient Temperature (ºC)
Rj-a = 10°C/W
Rj-a = 15°C/W
Rj-a = 20°C/W
Rj-a = 25°C/W