Rosin Soldering Flux


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The most commonly used raw material for flux paste – Rosin soldering flux for electronics

The main components of rosin are rosin acid and pimaric acid, which are generally neutral. Liquid rosin has a certain activity and is weakly acidic. It can react with oxides on the metal surface to form compounds such as copper rosin acid, which are suspended on the surface of the solder. And when used, there is no corrosion, and the insulation is strong. Generally speaking, rosin is the most commonly used raw material for soldering flux paste.


High purity rosin flux paste, good helper for repairing and welding

One-touch welding, Let the welding be solid and firm!

How to Use Rosin Flux:

  • Before starting to solder, please make sure that the surface to be soldered is as clean as possible so that the flux is not flooded.
  • Set the soldering iron to a high enough temperature (about 180°C) to thoroughly heat the type of solder used.
  • Add additional flux to wires that need to be tinned or other larger areas of the board to be soldered.
  • Use a soldering iron tip to heat the two surfaces to be connected (usually the component pins and the pads or holes of the circuit board) to the same temperature at the same time.
  • Add the solder to the heated joint, making sure it flows and covers the surface to be joined.
  • When finished, remove excess flux.
  • Please Note: Due to high temperature work, please keep away from children and pay attention to work safety.


Soldering Flux for Electronics Features:

Remove Oxidation

Remove the oxide film on the contact surface, Easy to solder to prevent oxidation. Rosin helps to increase the fluidity of the solder and help the solder to wet the sheet.



Fast tin climbing, good insulation. Non-corrosive to IC and PCB, easy to solder, quick to clean.Rosin has low corrosiveness and neutral and will not corrode circuit components and soldering iron tips.

Remove the oxide film to prevent re-oxidation

Make the solder joints brighter and fuller. Rosin prevents the oxidation of tin, can maintain the metallic luster of the tin, and the solder joints are bright and full.


Reduce the surface tension of the solder

Enhance solder wettability and firm soldering.Before welding, wipe the surface of the object, apply the paste on the copper paste, tin and other metals to be welded, and then use a soldering iron to melt the tin on the welding place.

Special flux for electronic components – good soldering effect – bright and full solder joints

Rosin Soldering Paste, High Purity, Good Helper For Repairing And Welding

  • It is more comprehensive in the oxygenation process and has high antioxidant capacity.
  • After welding, it will not cause damage to the layout, and the insulation resistance value is high.
  • No irritating odor, non-corrosive flux rosin.

Additional information

Weight 0.2 kg