Typically the no clean fluxes for rework are semi solid paste.  They are
either cleanable or no clean but not both.  Good quality solder joints are
certainly possible.  The quantity of residue is based on the quantity
deposited, and the temp encountered during soldering.  Most residue is hard
and intert but again is based on the quantity and temp encountered during
soldering.  Call if you wish.
Denis Meloche
Heraeus Cermalloy
610-825-6050


At 10:31 AM 8/1/97 MDT, you wrote:
>     Hello,
>
>     My company would like to move to No Clean flux for rework of PCBA's.
>
>     The main criteria we are looking for is the following:
>
>     1.  High Quality Solder Joint
>     2.  Easy to work with
>     3.  Low residue
>     4.  Capability to be water washed
>     5.  Capability to be not cleaned
>     6.  The residue be contained at the location of the solder joint.
>     7.  The residue be formulated in such a way that it will not collect
>     dust and debris.
>
>     Any information about such fluxes are appreciated.
>
>     Thanks,
>
>     Yuan
>     (303)417-5655
>
>