Your callout is fine, but you can't expect 2L pricing.
Material costs for such a thick bd are going to be similar
to a 6 layer bd. and lamination costs will be included.

Thank you,
Eddie Rocha
South Bay Circuits


Hi,
This is a question to all the fab people.
My project requires a PCB that will have a finished
thickness of 4.7 mm.  I
haven't found anyone who has a standard thickness very
close, but know that
it's possible to build much thicker boards.  What is the
best way to call
out such a construction?

The other significant details are:

- 2 layers, 1/2 oz. cu
- No plated through holes
- Gold flash finish, no soldermask
- Material will be in two versions, one FR4 and one in a
hi-freq.substrate
- Boards will have an additional "cover" substrate layer
laminated over the
top, but this is not included in the 4.7 mm thickness

I hope that was clear enough.

Thank you very much for any light you can shed on this.
Richard

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