I have seen wide varieties at previous companies, from too few to too many with boilerplate, old revisions of standards, etc. Can you suggest a middle of the road list? This is for regular PCB fabrication for production.

  • 3
    \$\begingroup\$ One thing to keep in mind is that it's tempting to copy-and-paste fab notes from an existing design -- but those requirements may sometimes be contrary to your own interests. Make sure that you agree with the details, especially when they reference a standard. Otherwise, you may be spec'ing yourself to a more expensive board than you need! \$\endgroup\$
    – Toybuilder
    Apr 6, 2011 at 18:01

4 Answers 4



  • client's name,
  • (project ID),
  • unique PCB ID

PCB metrics:

  • material,
  • CTI (Comparative Tracking Index),
  • thickness,
  • color,
  • number of layers,
  • layer stacking: reference to Gerber filename for each layer,
  • copper thickness,
  • solder mask color,
  • silkscreen color


  • Tooling for PCB edges: V-cut or milling,
  • PCB outline drawing with tolerances. This may be as simple as a rectangle, but this board's outline consists of 52 line segments


  • If there's room for it some shops like to add a quality logo (like UL) and/or a production date to the silkscreen. Tell them which area of the PCB they can use for this.

Here is one I found (free login required), but I don't know if it's good or complete. I don't see UL-94V, for example. Printed Circuit Board Designer's Reference; Basics gives this example chapter.

  • 2
    \$\begingroup\$ +1 for the note about "Thieving". I always get a question from the Fab House about this. \$\endgroup\$ Dec 8, 2010 at 21:10
  • 1
    \$\begingroup\$ The first link is dead. They probably moved it here: pcbdesignschool.com/?p=17 \$\endgroup\$
    – PetPaulsen
    Aug 23, 2011 at 22:43
  • Board Name
  • Company/personal name
  • Copyright year
  • Thickness
  • Board material type
  • Copper weight
  • Panelization instructions
  • Tolerances

To what's already been mentioned, I'd add

  • Surface finish (HASL, gold-plated, or ...)
  • Lead free requirements or lack thereof
  • Serialization requirements
  • Allowed deviations from the design files (i.e., remove silkscreen from areas not covered by solder mask, etc.)
  • color of solder mask
  • Any specifications for controlled impedance (i.e. "tracks drawn as 4.05 mil wide on top layer shall be 50 Ohm controlled impedance +/- 10%")
  • Tolerances for board dimensions, drill registration, drill diameter.
  • Fire safety rating (e.g. 94V-0), if required.

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