Use hot air reflow soldering can finish double-sided PCB soldering. Double-sided PCB soldering design means components are in double-side of the PCB need to soldering. Double-sided PCB soldering includes double-side soldering tin and single-side soldering tin and another side drying glue, as for single-side soldering tin and another side drying glue, it is easier. First, finish one side’s soldering tin as the same as single-side, then finish another side tape glue drying in low temperature, finish double-side SMT craft, after that carry on the next step plug-in or tin process on craft. Double-side soldering is generally treated as below follows:
♦Start the reflow oven, set up the transfer chain speed controller, finish the A side components reflow soldering with normal soldering craft.
♦Upend the PCB, repeat normal procedure to mount the component, adopt top heating strategy to let the B side reflow soldering, but the upend A side has been reflow soldering, the compounds in thick liquid volatilize, the melting point of tin is higher than the solder paste, which in order to keep the A side components not fall out.
