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| From [log in to unmask] Tue Jun 17 10: |
48:53 1997 |
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| >From willli Wed Jun 11 16: |
37:01 1997 |
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I have just finished a equivalency study between these two materials. I
received some very good feed back through the TechNet. The G-10 being
non-brominated is not the only difference between these materials. other
differences that came to my attention are:
The flexural strength of G-10 1/8 inch is 65000 psi the FR-4 is 63000
The parallel dielectric strength (Condition A) of G-10 is 60 KV the FR-4
is 55 KV
These are just two specifications, however slight, indicate that there is
a difference.
I can provide anyone interested with the physical specification sheets
along with the appropriate military standard. Please notify me off line.
----------
From: [log in to unmask]
Sent: Wednesday, June 11, 1997 3:17 PM
To: [log in to unmask]
Subject: Re: FAB: Material ; G-10
--------------------------------------------------------------------------
--
I have been told by fab suppliers that the flame retardency additives are
the
only thing that differ between FR-4 and G-10. I would like to know if
anyone
else has solid proof. G-10 is very available by fabrication houses and
is
approximately the same price as FR-4.
Frank Hinojos
Watkins-Johnson Co.
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Thank You,
Darrell Bonzo
EDO Corporation/Acoustic Division
Tele. 801-486-7481 Ext. 329
Fax 801-486-1447
E-Mail [log in to unmask]
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