Hello Dave,
The same has Mel stated, my MIL-P-13949 is out of reach at the moment, sorry.
However, IPC 4101 on page 19, has a list of SPEC. SHEETS, and a cross reference
( to some extent) therefore MIL-P-13949/4 is referenced on these sheets,
 
IPC 4101/21; /24; /25; /26, that is four separate spec sheets.
 
Again sorry I can't be more specific at the moment.
A quick guess is this may include a lot or most FR-4's in existence.  The range of Tg's,
110 C to 220 C does not exclude many laminates.  Caveat emptor, choose wisely and good luck.
Sincerely,
Paul Holloway; [log in to unmask] 
-----Original Message-----
From: Dave Dixon [mailto:[log in to unmask]]
Sent: Monday, August 25, 2003 3:20 PM
To: [log in to unmask]
Subject: [TN] Mil Spec help

Hi Technetters,
     I am looking for information on board
material conforming to MIL-P-13949/4 Type GFN.
I searched for this spec. at assist.daps.dla.mil
without success.
     Any clues would be appreciated on where to find
this spec.  Thanks in advance.
Dave

Dave Dixon
Engineering Technician
Aero-Mach Labs Inc.

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