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Subject: fr 4 material spec's Er vs temp

Date: 11/10/00 at 4:48 AM
Posted by: Cees Keyer
E-mail: pe1jmj@amsat.org
Message Posted:


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,

Cees Keyer.
Betronic design bv.
amsterdam Netherlands.

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