Hello,
What IPC Standard shows core and prepreg sizes? I have IPC-6011, IPC-6012A,
and IPC-2221 which do not have this information.
( at a IPC workshop I was shown some slash sheet that had the sizes and told
it was in IPC-6011 but I don't see it there, I also got the impression I was
an idiot for not having all the IPC standards --I don't work for a large
company that buys everything and my company won't buy me $400 design
guides!! It wasn't easy to get the standards I have and frustrating when I
buy the wrong ones.)
I have been told I should be telling on the Fab Layer the Layer Stackup
Info. I have only been specifying two thicknesses 0.080 +/- 0.006" or 0.062
+/- 0.006". The problem is I don't know the core and prepreg sizes. The
second problem is I don't know the PCB manufacturers stocked core and
prepreg sizes.
Finding out what cores and prepreg sizes are stocked at the PCB
manufacturers will be time consuming and a pain in the $#&. I have had
trouble with 0.080 +/- 0.006 PCBs coming in as 0.062 or 0.092 which is out
of my specification.
Sincerely,
Jeff Adolphs
Lake Shore Cryotronics, Inc.
Westerville, Ohio, USA
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* To post a message: mailto:[EMAIL PROTECTED]
*
* To leave this list visit:
* http://www.techservinc.com/protelusers/leave.html
* - or email -
* mailto:[EMAIL PROTECTED]?body=leave%20proteledaforum
*
* Contact the list manager:
* mailto:[EMAIL PROTECTED]
*
* Browse or Search previous postings:
* http://www.mail-archive.com/proteledaforum@techservinc.com
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
