xlamp xm-l leds

Copyright © 2010 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.

4

Copyright © 2010-2011 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree, the Cree logo and XLamp are registered trade-

marks of Cree, Inc.

4

electrical characteristics (t

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.

Electrical Characteristics (Tj = 25ºC)

0

200

400

600

800

1000

1200

1400

1600

1800

2000

2200

2400

2600

2800

3000

2.00

2.20

2.40

2.60

2.80

3.00

3.20

3.40

3.60

Forward Voltage (V)

Cool White

Thermal Design

0

500

1000

1500

2000

2500

3000

3500

0

20

40

60

80

100

120

140

Ambient Temperature (ºC)

Rj-a = 4

°C/W

Rj-a = 7

°C/W

Rj-a = 10

°C/W

Rj-a = 15

°C/W