Mark,
You need to ask your mechanical engineer what is the limiting feature in the
design.

If you have wrap around end launch connectors or a card guide, then it might
be the laminate.  If you have a case going over the assembly, which might
interfere with components, then it might be the over the copper, excluding
solder if you hand solder, including solder otherwise.  If a gull wing
surface mount connector sits on the Soldermask, then perhaps you need to
control the thickness over the Solder mask.

My quick review of 6012 did not find a 'default' definition of overall
thickness.

Over the years, I have often been surprised at what I got, when I didn't
know what I asked for.  I call them 'lessons learned'.

Best Regards,

George Franck
"My opinions are just that."



====================
Hi All,

Here's what was ordered:
0.062" finished board thickness, SMOBC, HASL final finish, IPC-6012 class 2.

Here's the question:
Does finished board thickness include the HASL coating thickness?

Thanks,
Mark Hargreaves

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