What are the general guidelines for determining when flux should or should not have rosin?
Thanks
Electronic – When do I choose to use a rosin based flux or rosin-free flux
fluxsoldering
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Best Answer
Rosin-free flux is acidic. If you don't remove the residue, it can cause corrosion. These are typically used on non-electrical solder connections.
Rosin flux is not acidic, and the residue will not corrode. Ordinary electronics solder contains rosin flux.