Steve,
The last character is labeled "special consideration" and usually denotes
color.  I've never heard of GEE.
GE is G-10 (M13949/3), GF is FR-4 (M13949/4).  Most of the time, I've heard
the two terms used interchangeably, although the materials folks out there
probably know the REAL difference.  All I know is that IPC-4101 lists GE
with a minimum Tg of  100C and GF with a minimum of 110C.
Mike

Michael E. Boldt
Electronic Packaging Engineer
Moog Inc., Motion Systems Division

-----Original Message-----
From:   Stephen R. Gregory [SMTP:[log in to unmask]]
Sent:   Wednesday, September 20, 2000 1:01 PM
To:     [log in to unmask]
Subject:        [TN] Mil laminate designations...

Hi all!!

What does the last "E" in the Mil designation type "GEE" laminate stand for?
I though it was the color...for instance "GEN" would be a G-10 natural
color,
right?

Also, is there any real difference in "GE" vs. "GF" laminate material?

Thanks!

-Steve Gregory-

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