• The Gerber files required for fabricating the PCB
  

• PCB fabrication notes (If any)
  

• The Bill of Materials (*.xlsx spreadsheet or tab-delimited *.txt file.  See notes below.)
  

• The pick-and-place data file(s) for the PCB (If any)
  

• PCB assembly notes (If any)
  

• Whether the boards are RoHS-compliant (lead-free) or tin/lead
  

• The number of finished PCB assemblies desired
  

• The desired delivery date
  

• Your contact information, including a telephone number and e-mail address
  

• A customer part number for each part (Not required, but very common.  This is the number your company uses to refer to the part in your CAD libraries and/or inventory.)
  

• A part description for each part (Component type, value, tolerance, package, etc.)
  

• A Manufacturer Name for each part (Please don't omit this or label it "Generic")
  

• A Manufacturer's Part Number for each part (Please don't omit this or label it "Generic")
  

• A reference designator for each part (The reference designators must match the legend printed on the PCB)
  

• The quantity required for each part number
  

• Distributor names and catalog numbers for each part (If available)