GFN is the name for standard FR4 prior to IPC-4101: G (Woven Glass) F
(Flame Resistant Epoxy) and N (Natural Resin Color).
GFN is equivalent to IPC-4101/21. Isolas 406 is a higher Tg,
IPC-4101/24,26. If standard FR4 (GFN) is needed, just specify Material
IAW IPC-4101/21.
Jeffrey Bush
Director, Quality Assurance and Technical Support
VERMONT CIRCUITS INCORPORATED
76 Technology Drive - POB 1890
Brattleboro, Vermont 05302
Voice: 802.257.4571.21 Fax: 802.257.0011
http://www.vtcircuits.com
-----Original Message-----
From: Franklin D Asbell [mailto:[log in to unmask]]
Sent: Friday, December 10, 2004 2:20 PM
To: [log in to unmask]
Subject: Re: [TN] GFN 4101
GFN I believe is regular FR4...the initials meaning Glass-Fiber-Natural
(natural being the color...green...go figure)
I believe also GFN would be 4101/21 unless a higher Tg is specified with
it...
Franklin...
----- Original Message -----
From: "Rodney Miller" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, December 10, 2004 12:45 PM
Subject: [TN] GFN 4101
> We don't do lamination, as an assembler, however we do have a request
> for a special PCBA which is using GFN Laminate.
>
> Broad search reveals a tech sheet for Isola 406BC which is from Isola.
>
> Is the GFN a special grade of FR4 or is it a PCB fabrication
certificate
> as to reliability etc?
>
> The Fab drawing refers to IPC 4101, but I don't have one of these
handy.
>
> For all I know, its a spec that has been replaced as an obsolete mil
> spec....
>
> Any news is news,
>
> Thanks
>
> Rodney L. Miller, CID
> VP / Director of Manufacturing
> Tri-onics Inc.
> ph (618) 654-9831
> fx (618) 654-6122
> e [log in to unmask]
>
>
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