Hi,
We have solder reflow use with water soluble flux and Tin/lead process. There is special glass component which needs to mask during reflow soldering and wash flux+solder mask post soldering.
The existing solder mask does washes off. But leaves kind of stain which would not be recommended for medical purposes. We can't use peelable as reflow is vaccum type with nitrogen atmosphere. Peelable is too thick.
We tried with Techspray and other local supplier and we are in Melbourne, Australia. But all have some issues.
Can someone suggest good water soluble solder mask for reflow profile which does not leaves any residue?
Thanks
reply »