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April 2005

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Subject:
From:
John Parsons <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, John Parsons <[log in to unmask]>
Date:
Fri, 1 Apr 2005 11:12:03 -0800
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I have a customer spec'ing the following  FL-GF020C1/1BIIA



OK, so I know(?) that this is a MIL-S-13949 spec.  I don't have an old copy
so have done the requisite "Google" and Technet Archive search in an attempt
to understand this so I can cross it to IPC-4101.  I could use some help.



1.      FL = Flexible laminate correct?  TL = thin laminate??  What is the
difference in construction for a given dielectric thickness (020)?
2.      "B" after C1/1 still refers to thickness tolerance?  Does it equate
to "B" in 4101?
3.      What is "IIA" after the "B"?
4.      Anyone want to provide the exact 4101 equivalent callout for the
above spec?



Happy Friday!

John Parsons




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