Etching and descalling of printed circuit board

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  • Circuit board etching

Example flowsheet:


Etching and descalling in printed circiut board.jpg

Literature: Bat for the surface treatment of metals & plastics, 2006



  • Typical parameters of the process
Process Temperature [°C] Residence time Chemicals Details Literature
PCB etching 20-45 Copper: 145-170 g/l, halide: 235-265 g/l, content of chloride: 4-4,5 mol/l pH: 8-9,5


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