Copyright © 2013-2017 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree
®
and XLamp
®
are registered trademarks and the Cree logo is a trademark
of Cree, Inc. Other trademarks, product and company names are the property of their respective owners and do not imply specific product and/or vendor endorsement, sponsorship or association. This
document is provided for informational purposes only and is not a warranty or a specification. For product specifications, please see the data sheets available at www.cree.com.
7
XLamp
®
mT FamiLy & mK FamiLy LED SoLDEring & HanDLing
after soldering
After soldering, allow XLamp MT Family and MK Family LeDs to return to room temperature before subsequent handling. Premature
handling of the device, especially around the lens, could result in damage to the LeD.
Cree recommends verifying the solder process by checking the consistency of the solder bond of several trial PCBs after reflow. After
shearing selected devices from the circuit board the solder should appear completely re-flowed (no solder grains evident). The solder
areas should show minimum evidence of voids on the backside of the package and the PCB.
Cleaning pCbs after soldering
Cree recommends using “no clean” solder paste so that flux cleaning is not necessary after reflow soldering. If PCB cleaning is necessary,
Cree recommends the use of isopropyl alcohol (IPA).
Do not use ultrasonic cleaning.
MoIsTurE sEnsITIvITy
Cree recommends keeping XLamp LeDs in the provided, resealable moisture-barrier packaging (MBP) until immediately prior to soldering.
Unopened MBPs that contain XLamp LeDs do not need special storage for moisture sensitivity.
Once the MBP is opened, XLamp MT Family and MK Family LeDs may be stored as MSL 1 per JeDeC J-STD-033, meaning they have
unlimited floor life in conditions of ≤ 30 ºC/85% relative humidity (RH). Regardless of storage condition, Cree recommends sealing any
unsoldered LeDs in the original MBP.
LoW TEMpEraTurE opEraTIon
The minimum operating temperature of these XLamp LED components is -40 °C. To maximize lifetime, Cree recommends avoiding
applications where the lamps are cycled on and off more than 10,000 cycles at temperatures below 0 °C.
noTEs on soLDErIng XLaMp
®
MT FaMILy anD MK FaMILy LEDs - ConTInuED
