MCE4WT-A2-0000-000HF8 Cree Inc, MCE4WT-A2-0000-000HF8 Datasheet - Page 9
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MCE4WT-A2-0000-000HF8
Manufacturer Part Number
MCE4WT-A2-0000-000HF8
Description
XLamp MC-E Series LED - Warm/Neutral White
Manufacturer
Cree Inc
Series
Xlamp® MC-Er
Datasheets
1.XREWHT-L1-0000-004E7.pdf
(2 pages)
2.MCE4WT-A2-0000-000K01.pdf
(13 pages)
3.MCE4WT-A2-0000-000K01.pdf
(15 pages)
Specifications of MCE4WT-A2-0000-000HF8
Color
White, Warm
Current - Test
4 x 350mA
Luminous Flux @ Current - Test
280lm
Current - Max
4 x 700mA
Lumens @ Current - Max
490lm
Lumens/watt @ Current - Test
63lm/W
Voltage - Forward (vf) Typ
3.2V
Wavelength
2900K
Lens Style/size
Round, 6.4mm
Viewing Angle
110°
Mounting Type
Surface Mount
Package / Case
0.3" L x 0.28" W x 0.18" H (7.5mm x 7mm x 4.48mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
NOTES
Lumen Maintenance Projections
Based on internal long-term reliability testing, Cree projects white XLamp MC-E LEDs to maintain an average of 70%
lumen maintenance after 50,000 hours, provided the LED junction temperature is maintained at or below 135°C and
each LED is operated with a constant current of up to 700 mA.
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.
Moisture Sensitivity
XLamp MC-E LEDs are shipped in sealed, moisture-barri-
er bags (MBB) designed for long shelf life. If XLamp MC-E
LEDs are exposed to moist environments after opening the
MBB packaging but before soldering, damage to the LED
may occur during the soldering operation. The following de-
rating table defines the maximum exposure time (in days)
for an XLamp MC-E LED in the listed humidity and temperature conditions. LEDs with exposure time longer than the time
specified below must be baked according to the baking conditions listed below.
Baking Conditions
It is not necessary to bake all XLamp MC-E LEDs. Only the LEDs that meet all of the following criteria must be baked:
LEDs that have been removed from the original MBB packaging
LEDs that have been exposed to a humid environment longer than listed in the Moisture Sensitivity section above
LEDs that have not been soldered
LEDs should be baked at 80ºC for 24 hours. LEDs may be baked on the original reels. Remove LEDs from MBB packaging
before baking. Do not bake parts at temperatures higher than 80ºC. This baking operation resets the exposure time as
defined in the Moisture Sensitivity section above.
Storage Conditions
XLamp MC-E LEDs that have been removed from original MBB packaging but not soldered yet should be stored in a room
or cabinet that will maintain an atmosphere of 25 ±5ºC and no greater than 10% RH. For LEDs stored in these condi-
tions, storage time does not add to exposure time as defined in the above Moisture Sensitivity section.
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.
Temperature
30ºC
25ºC
20ºC
30%
12
17
9
Maximum Percent Relative Humidity
40%
5
7
9
50%
4
5
7
60%
3
4
6
XLAMP MC-E LEDS
70%
1
2
2
80%
1
1
2
90%
1
1
1
9