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August 2003

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Subject:
From:
"d. terstegge" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 25 Aug 2003 17:23:33 +0200
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Hi Blair,

I forgot to mention that in this case we are the customer (we assemble
the boards), and our pcb-supplier is confronting us with this newer
standard. Our customer (quite knowledgeable people, I'd say) consider
this unacceptable practice, and they reject the products that have the
exposed fibers.

Daan

>>> [log in to unmask] 08/25/03 04:49pm >>>
Daan,

If I remember correctly from my days in Aerospace it is perfectly
acceptable for a company to migrate to a new standard when an old
standard is superseded. It is entirely the option of the organization
to
determine which version of the standard to use - the one called for in
the contract or the latest version or superseded standard.

However, if you are going to do this, I would recommend that you let
your customers know this when they place an order with the old
standard
called out.

Blair Hogg
QA Manager
GAI-Tronics Corp.


>>> [log in to unmask] 08/25/03 10:21AM >>>
Hi Technet,

Mil-P-55110D is not active anymore, and has been replaced by
MIL-PRF-31032.
If the production-drawing states "PCB shall be produced according to
to
MIL-P-55110D" does it mean that the board manufacturer has the freedom
to use the replacement specification ?
The specific issue is that Mil-P-55110 D does not allow exposed
fibers,
whereas Mil-PRF-31032 does allow this (with some restrictions of
course), but I assume there are more diffferences between these two
specs.

Best regards,

Daan Terstegge
Unclassified mail

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