On 09/07/2011 22:49, David wrote: > I bought a number of through hole IR receivers, which I used to test a > simple device. Subsequently I have designed a board and ordered up some > SMD versions of the same thing (http://tinyurl.com/665gafn). > > However, the bag comes with a rather nice sticker explaining how these > are moisture sensitive. In the bag is a humidity sensing patch and a > lot of warnings. > > This is a hobby board and I'll only make one or two, but I'm wondering > how moisture sensitive these things are. In general, are moisture > sensitive parts a pain? Or am I going to be OK once I've soldered them u= p? > > David For a hobby board I wouldn't worry - generally the moisture warnings are=20 for reflow, where the package can crack during reflow if it carries=20 excess moisture. If you check the datasheet it says to reflow within 72hrs of opening the=20 dry pack, and gives information regarding storage conditions and what to=20 do if the devices have absorbed too much moisture. Since I assume you will be hand soldering though, none of this should be=20 relevant to you. If you are planning to use reflow method though, then follow the=20 instructions mentioned above in the datasheet. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .