AVR-Chat

On Thu, Sep 09, 2004 at 09:24:19PM +1000, John Samperi wrote:

> >Both of these are "no clean" which basically means any flux residue is
> >cosmetic, but I clean anyway, especially if it is a board for someone
> >else. 
> 
> How do you clean? :- ) Is it water based flux?

The flux does not claim to be water soluble and the solder datasheet
provides a Kester part number for a solvent to use for cleaning should
that be desired.  However, I just use high concentration alcohol which
leaves the board mirror clean.  I then flush with deionized water,
blow off with compressed air, then blow dry with warm air.

Regarding the need for removal, the datasheet claims:

     "The minimal residue left by the "405" core flux is both
     non-conductive and non-corrosive.  The flux residues are
     comparable to a conventional RMA except that the "405" residue is
     clear and nearly colorless.

     "Although the residues from the Kester "405" cored wire do not
     need to be removed, occasions may arise where cleaning is
     required.  In these instances, the cleaning may be performed
     using Kester #5240 Solvent Cleaner."

Straight from the horses mouth, as it were.

-Brian
-- 
Brian Dean
BDMICRO - ATmega128 Based MAVRIC Controllers
http://www.bdmicro.com/