Years ago, there was discussion of making a "IPC-A-640" to define requirements for assemblies comprised of more than a circuit board assembly. We don't know what happened after that.
As an alternative consider: Telcordia GR-78 - Generic Requirements for the Physical Design and Manufacture of Telecommunications Products And Equipment [replacing Bellcore TR-NWT-000078 - Generic Physical Design Requirements for Telecommunications Products] http://telecom-info.telcordia.com/site-cgi/ido/newcust.pl?page=idosearch&docnum=GR-78&
Contact Jack Crawford � crawja at ipc.org
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