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June 2005

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Subject:
FR-4 Thermal Conductivity Constant??
From:
John Parsons <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, John Parsons <[log in to unmask]>
Date:
Wed, 1 Jun 2005 15:31:14 -0700
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text/plain
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Happy Wednesday to all,



I have a customer asking for the thermal conductivity constant for FR-4.  I
have seen this spec'd on some specialty laminates, Rogers, GIL for instance,
but not on any "FR-4" laminates.  Would this spec likely be available from
the laminate supplier?  If not, why?  Tell me why I see it on the big $$$
high frequency laminates but not the "cheap stuff".



TIA

John Parsons






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