940MWO4C Datasheet, PDF (9/10 Pages) HB Electronic Components – LED

a. Pb-free Solder Reflow Soldering
D. Cleaning
(1) Take care using chemical cleaning leds colloid, some chemicals like
Trichloroethylene, Acetone may damage surface of colloid causing fading; Ethyl
alcohol could be used for cleaning and dipping but less than 3 minutes under
normal temperature.
(2) Use Neutral Soldering if possible.
(3) Do not clean by water, the remaining water may lead to rustiness.
-6-