Took me 2 years to figure out I was using the wrong flux

I've been soldering boards for a while now and kept getting cold joints no matter what I did. Finally a guy at a repair shop in Austin looked at my work and asked why I was using acid flux on circuit boards. I didn't even know there was a difference between that and rosin flux. Has anyone else made this dumb mistake or am I the only one?

3 comments

3 Comments

amy97429d ago

Are you sure it wasn't just a bad batch of flux? I've used the same kind for years without issues.

emery_white29d ago

Trust me, I checked the batch number and everything. Same manufacturer, same supplier, same everything I always use. This was different though, it went from working fine to complete garbage in about two weeks. I had to redo three joints that looked perfect at first but then turned all crusty and brittle. Never seen that happen before with any flux, bad batch or not.

grant.felix29d ago

Wait, @amy974, have you ever had a bad batch work fine at first then fail later?