RE: [SI-LIST] : Dieletric Constant Polyimide

Andrew Ingraham (Andrew.Ingraham@digital.com)
Fri, 12 Jun 1998 11:22:51 -0400

> Does anyone no the dielectric constant for Polyimide?

According to a reference I have, straight Polyimide resin (MIL spec
designation GC) has a dielectric constant of 3.5.

Board materials using Polyimide range from 3.0 to 4.7, depending on the
reinforcing material and ratio between the two.

Regards,
Andy Ingraham

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