PCB Manufacturing Method:
- Photomask generated from the gerber file.
- Circuit pattern will be applied over the copper foil through photosensitive material.
- Etching step remove the copper that is not the part of the circuit.
- Milling is another method to remove the unwanted copper.
- Once etching completed, vias will be made using drilling bits based on via diameter.
- Now a days, vias with small diameter is made using laser.
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