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September 2003

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Subject:
Re: FR-4
From:
"Jason W. Gregory" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 10 Sep 2003 11:10:21 -0500
Content-Type:
text/plain
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text/plain (80 lines) 
Jim

Right you are...."resistant". Maybe I'm retardant.

Jason Gregory



                      Jim Geer
                      <Jgeer@PRIME-MEASU        To:       [log in to unmask]
                      REMENT.COM>               cc:
                      Sent by: TechNet          Subject:  Re: [TN] FR-4
                      <[log in to unmask]>


                      09/10/2003 11:08
                      AM
                      Please respond to
                      "TechNet E-Mail
                      Forum."; Please
                      respond to Jim
                      Geer






Flame Resistant, 4th level (i.e., FR-5 is more flame resistant).

>>> [log in to unmask] 09/10/03 08:37AM >>>
Can anyone tell me what the FR-4 acronym stands for?
I know what the material is per IPC 4101, but what does the FR and the
number 4 stand for?

Thanks techies.

Ezequiel

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