FreeLists / si-list / [SI-LIST] Conductivity for FR4

[Khalid Ansari <khalida@xxxxxxxxxxx>]

Hi all,

I am using a 2D field solver to extract the RLGC parameters for a
stripline differential pair.  When defining FR4 it asks me for the
conductivity of the material.  I looked up the loss tangent for FR4,
which is .02 (around 2.5 Gbps).  Can I use the formula:
Loss tangent = conductivity/(2*pi*f*EoEr) and get the appropriate
conductivity value for the field solver, or do I need to worry about
something else.

Thanks,
Khalid 

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