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1996

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Subject:
From:
"LISA GREENLEAF" <[log in to unmask]>
Date:
16 Apr 1996 11:54:52 -0400
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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
--------------------------------------
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
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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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