Eric,
Your assumption is good. As for the replacement, the MIL-S-13949H NOTICE 2 dated on 30 November 1998, which supersede the MIL-P-13949G, has the following on it;
MIL-S-13949H, dated 31 March 1993, is hereby canceled without replacement.
The IPC-4101A with Amendment1 replaces well the old MIL spec. It also has a reference to the MIL spec for a given specification sheet.
Hope will help.
Louis Guérin, C.I.D.+
Conception de Plaquette de Circuit Imprimé | PCB Designer
Lyrtech inc.
Phone/ Tél.: (1) (418) 877-4644 #2242
Toll Free/Sans frais - Canada & USA : (1) (888) 922-4644 #2242
Fax /Téléc.: (1) (418) 877-7710
www.lyrtech.com
Infinite possibilities...TM
-----Message d'origine-----
De : TechNet [mailto:[log in to unmask]] De la part de ekalgren
Envoyé : 26 octobre 2007 15:03
À : [log in to unmask]
Objet : [TN] PCB Material Question
This one should be easy enough for Friday.
I've got a drawing calling out the following material:
GE062 C2/C2 1A per MIL-P-13949
I've worked it out so far to be Type GE 0.0620 thick (they left out a 0),
with 2 oz copper on each side.
I can't figure out the 1A. I think it should be A1 for pits/dents class A,
and class 1 for thickness tolerance.
Does this sound right? Also, has anything replaced Mil-P-13949? Is type GE
material commonly available?
Thanks!
Eric Kalgren
Electrical Engineer
Cobham Defense Electronic Systems
Continental Microwave Division
11 Continental Drive
Exeter, NH 03833 USA
Tel: 603-775-5200
Fax: 603-775-5201
E-mail:[log in to unmask]
Website: <http://www.cobhamdes.com/> http://www.cobhamdes.com
<mailto:[log in to unmask]>
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