Q: Which layers are required for PCB manufacturing?

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eehadi

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Hi.
I have a multi-layer pcb file in allegro and I want to give gerber file to manufacturer to produce pcb.
Which layers' gerber file must be generated? (minimum layers for a complete pcb with drilling, silk screens, defined layer thickness, ...)
Which information are not in pcb file and I must tell manufacturer (e.g. plating, ...)?
 

Required
- copper artwork for each layer, e.g. top, I2, I3, bottom
- top & bottom solder mask
- top silk screen, optionally bottom silk screen
- board outline
- plated drills, preferably with embedded tool table
- optionally unplated drills

not included in gerber and drill data: board thickness, copper weight, surface finish
 
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