SRA Solder 135 Rosin Paste Soldering Flux For Electronics, No Clean Flux Made for Lead and Lead-Free Solder Circuit Boards and Copper Electrical Wire - Safe Clean Residues with No Goopy Mess (2oz Jar)

This flux is essential when you’re soldering and desoldering large amounts of ICs and chips. It really helps ensure solid joints and clean work, especially when you’re dealing with dense boards or rework jobs. That said, for beginners or those just getting into board repair, I’d recommend starting with a no-clean flux in a syringe. It’s easier to apply precisely and doesn’t require as much cleanup, which can make learning a lot less frustrating.

Good size container of flux for a reasonable price. Works well. Likely a lifetime supply for me. Containers are plastic these days - they open easier than the old-school metal ones that were impossible to open. Perhaps they crack in 30 years... probably not an issue.

Every person that solders repairing electronics experiences wire that is old, cheap and very little copper in it. When your trying to solder those kinds of wire youll spend time heating the wire and it will not accept solder! I use a wire brush or sandpaper to clean the wire ends then use a dab ot this rosin paste. The solder then is absorbed into the wire giving you a faster and stronger joint. Professional electricians use rosin paste regularly. It is the only way you'll get cheap solder to work. Also works great when reheating an old sloder joint to attach new wire to it.

I generally just use flux paste when de-soldering, this paste works well and cleans up easily.

I am pleased with this flux. It works well and does not seem to leave a residue.

Great product. Does the job better than I expected.

Easy application, perfect consistency, fast working, and easy to clean. Reasonably priced and shipped fast.

The SRA Solder 135 Rosin Paste Soldering Flux makes soldering my circuit boards a breeze, flowing nicely with no messy residue. The 2oz jar is easy to dip into, but it can dry out if you don’t seal it tight after use.