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46:12 1996 |
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The spec was written by a joint tiger team of DESC representatives along with
industry volunteers representing a cross section of industy (of which I was a
member). DESC is administering the spec, and since I hear that getting a copy
of it from navy pubs has been difficult, I would suggest you give anyone at
DESC a call.... try Ray Kolonchuk or Joe Dhirkop @ 513-296-6278
Let me know if you need any help
Lisa Greenleaf
603-791-3118
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Date: 4/16/96 11:50 AM
To: LISA GREENLEAF
From: Jim Spendow
Where does one get a copy of PRF 31032 and who's spec is it?
Jim Spendow
Fax 616-241-8686
Ph 616-241-8413
______________________________ Reply Separator
_________________________________
Subject: Re: FAB-etchback
Author: [log in to unmask] at SMTPpost1
Date: 4/16/96 9:50 AM
PRF 31032, which is the spec intended to replace MIL P 55110 has the same
requirements in it for etchback, which are .0002 - .003" when specified by the
master drawing. If no etchback is specified, than a negative etchback of
.0005 is allowable.
--------------------------------------
Date: 4/15/96 10:23 AM
To: LISA GREENLEAF
From: Lyle Andersen
Can anyone inform me of the current status of the military requirement re:
etchback? A potential customer's blueprint references 55110D and
specifically calls out for etchback on type 3 boards (multilayer). However,
the board will have a commercial application and, as is common with
blueprint notes, this may be of the "boilerplate" variety. They may be
satisfied with desmear with a little education and persuasion. Thanks to
any who respond.
Lyle Anderson
Electrostar-Utah Division (formerly Lundahl Astro Circuits
Phone 801-753-4700 ext. 3040
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