PCB manufacture

PCB manufacture

1. Photo-etch method

   • 1. draw the circuit on to a mask
   • 2. The mask is then placed on the board, which has a thin coating of copper, and the circuit diagram transferred onto the board using an etch-resist.
     • alternatively, a photosensitive board is covered by the mask and then exposed to light.
   • 3. The circuit is then etched onto the board using ferric chloride in an etching tank.
   • 4. Next, a small PCB drill is used to drill out the centre of the pads
   • 5. the components are pushed through the board and soldered in place.