MOTM

The organic solder has water-washable flux.  It is used for soldering 
most of the parts onto a PC board, which is then immediately washed in 
warm water to remove virtually all of the flux residue, leaving the 
board very clean.  Any parts that cannot be water-washed are soldered on 
after that with normal no-clean solder.  It is very important to wash 
off all of the organic flux, because it is corrosive if left.  The 
no-clean solder leaves some flux residue, but that is not as corrosive 
as the organic flux.

Richard Brewster
http://www.pugix.com

Ben Stuyts wrote:
> What is the reason that you use two different kinds of solder  
> (organic and no-clean)? I could not find that in the archives.
>
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