Copyright © 2008-2010 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree, the Cree logo and XLamp are registered trade-

marks of Cree, Inc.

13

XLAMP XP-E LEDS

NOTES

Lumen Maintenance Projections

Based on internal long-term reliability testing, Cree projects royal blue, blue, green and white XLamp XP-E LEDs to

maintain an average of 70% lumen maintenance after 50,000 hours, provided the LED junction temperature is main-

tained at or below 135°C and the LED is operated with a constant current of up to 700 mA.

Cree currently recommends a maximum drive current of 700 mA for XLamp XP-E white in designs seeking the ENERGY

STAR* 35,000 hour lifetime rating (≥ 94.1% luminous flux @ 6000 hours) or 25,000 hour lifetime rating (≥ 91.8% lu-

minous flux @ 6000 hours).

Please read the XLamp Long-Term Lumen Maintenance application note for more details on Cree’s lumen maintenance

testing and forecasting. Please read the XLamp Thermal Management application note for details on how thermal design,

ambient temperature, and drive current affect the LED junction temperature.

* These lifetime ratings are based on the current ENERGY STAR Solid State Lighting Luminaires V1.1 (December 12,

2008) and ENERGY STAR Integral LED Lamps V1.0 (December 3, 2009) lumen maintenance criteria.

Moisture Sensitivity

In testing, Cree has found XLamp XP-C & XP-E LEDs to have unlimited floor life in conditions ≤30ºC / 85% relative hu-

midity (RH). Moisture testing included a 168 hour soak at 85ºC / 85% RH followed by 3 reflow cycles, with visual and

electrical inspections at each stage.

RoHS Compliance

The levels of environmentally sensitive, persistent biologically toxic (PBT), persistent organic pollutants (POP), or other-

wise restricted materials in this product are below the maximum concentration values (also referred to as the threshold

limits) permitted for such substances, or are used in an exempted application, in accordance with EU Directive 2002/95/

EC on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS), as

amended through April 21, 2006.

Vision Advisory Claim

WARNING: Do not look at exposed lamp in operation. Eye injury can result. See LED Eye Safety at http://www.cree.

com/products/pdf/XLamp_EyeSafety.pdf.

Intellectual Property

For remote phosphor applications, a separate license to certain Cree patents is required.