CITY416.ruBlagoveshchensk city Arduino community    
news modules projects ideas technology links
 CITY416.RU / technology / protective layer removal


Protective layer removal


Etched PCB is washed in water and dryed, then the copper protective layer is removed. If laser printer or nitropaints is used for protector, it can be washed with acetone (or 1:1 acetone with water). If vinyl film used, it can be taken out with knife. If photoresistive film used, it can be removed with alkaline solution (NaOH or KOH).



Cleaned boards


Etched PCB without protective layer is oxidising by air, and should be drilled and tinned as soon as possible. If you plan tin the board later, you can drill through protective layer, or cover whole tracks with rosin after cleaning and/or drilling.

 

проектирование, изготовление, монтаж

PCB