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Subject: fr 4 material spec's Er vs temp
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Date: 11/10/00 at 4:48 AM
Posted by: Cees Keyer
I need to know what the influence is of the temp. on
the epsilon_r (Er). We are designing a semiconductor
life test equipment which will work on 125 deg C and at
2.5 GHz. So we are interested in the change in Er and
the loss tangent in FR4 glass epoxy PCB.
thanks in advance,
Betronic design bv.
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