So it's a flux problem.
Dewey

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Rex Waygood
Sent: Wednesday, July 24, 2013 12:55 AM
To: [log in to unmask]
Subject: Re: [TN] Humidity Issues

I visited a company who used water soluble fluxes and they had a graph on the wall of humidity and Defects ppm vs time. The humidity control in the company didn't cope with the influx of people at shift change. The defects went up with humidity after a time delay and then as the humidity control started to work  the ppm returned to normal.
Rex


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Blair Hogg
Sent: 23 July 2013 20:48
To: [log in to unmask]
Subject: [TN] Humidity Issues

Hi Technetters,

Been rummaging through the archives looking for info on humidity issues in soldering process, found some interesting info on why keeping boards sealed and if not, baking, is important to preclude delimination problems. Hoever what I was looking for seems to elude me. 

Assuming that boards are stored properly and are below the levels of moisture content that can cuase problems, and that MSDs are also stored per industry standards, what other issues does humidity induce in the sctual soldering process itself? If the humidity gets too high, even though a facility has air conditioning it may only control temperature and not humidity level, will this cause additional problems in the process itself? 

Thanks,

Blair

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