xlamp xT-E 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.

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trademarks of Cree, Inc.

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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.

Relative Intensity vs. Current (Tj = 85ºC)

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Ambient Temperature (ºC)

Rj-a = 10°C/W

Rj-a = 15°C/W

Rj-a = 20°C/W

Rj-a = 25°C/W