How To Clean Solder Flux Residue

Trying to remove water.

How to clean solder flux residue. To clean the flux residue I use 99 isopropyl alcohol with an Adafruit ESD-safe PCB cleaning brush Product ID1209 Kimwipes KCC34155EA03 and sometimes a little distilled water. Most no clean pastes require an organic saponifier for effective flux removal but. Apply some CJs and using a soft to medium bristle brush or a clean soft rag scrub the project thoroughly.

There are also several brands of chemical cleaners specifically designed to clean flux goop. Solder flux residue can be removed in two steps. You can submerge the assembled board in a container that is filled with this and agitate it for some 30 sec.

Flush with lots of clean water to rinse away any residue. One way to fix this problem is to lower the temperature when soldering. SMT REWORK FLUX RESIDUE REMOVAL SMD About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy Safety How YouTube works Test new.

Another way to fix this problem is to clean first with an acid cleaner such as Citrajet Low-Foam Liquid Acid CleanerRinse for machine cleaning or Citranox Liquid Acid Cleaner and Detergent for manual. For studying the effect of flux residue on ECM C33 capacitors were dosed with no-clean flux by dipping in the flux solution. In the first step organic solvents are used to remove flux residue.

In order to effectively clean and remove no clean solder pastes and no clean flux residues a polar solvent or a solution of water and saponifier is necessary. 55 2293 Views. 2 Use the toothbrush to gently brush the solder flux on the PCB applying the alcohol or acetone.

Solder paste flux residue after reflowing. While this is acceptable for certain applications it is also necessary to determine the proper temperature and dwell time for the flux to. If there is any chance of flux-contaminated solvent wicking into these areas flush them with fresh solvent.