Good afternoon,

We are considering revising the way we mark our assembled boards.
Typically we want finished board assembly revision, assembly date code,
assembly part number, and if built by a CM an manufacturer's code.
Historically we have the basic part number in silkscreen on the
component side along with the word Rev with space for a revision letter.
We currently scratch the assembly dash number and revision into the
surface of the board.

Now with CMs doing some of the assembly they have other methods of
marking.  In my former lives Engineering has been reluctant to give up
any board space for board identification.  I'm interested in defining a
label area size and labeling method, e.g., polyester label, polyimide
label or epoxy ink stamp.

What sort of space do you leave for this kind of marking? 

What sort of marking methods do you use?

Thanks in advance,

Phil Nutting

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