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Old 7th November 2007, 01:11 AM   #1
hajame is offline hajame  Hong Kong
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Default PCB material

Does anyone know whether the dielectric constant of phenol paper PCB is lower than that of fiber glass PCB? How is it compared to FR4(4.2-4.6)?
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Old 7th November 2007, 01:52 AM   #2
BWRX is offline BWRX  United States
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Maybe this web page of material dielectric constants will help give you an idea.


While I can't say for sure, it seems like the dielectric constant of phenol paper would be about the same as FR4 but may vary more over temperature.
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