IPC 6012 is what I would write. Be sure to include what class board you're requiring,
as well as possibly paying a bit more for additional testing (if they're not performing
those added tests already)

Franklin D Asbell
Network Circuits, Inc.
Irving, Texas

Paul Bannister wrote:

> I am trying to update and standardize the notes that appear on our printed
> circuit board fabrication (drill drawing) drawing.  The current drawing has
> over 20 notes detailing things like hole registration electroplating
> thickness, wrap and twist ECT.  I would like to reference one specification
> that covers all aspects of the board fabrication and eliminate all the
> specific notes.
>
> Is there and industry standard on what needs to be specifically called out
> on the fabrication drawing and what is the best specification to reference
> (IPC-A-600?) for fabricating 4 layer commercial grade surface mount PCB's.
>
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