Inherent PCB electrical resistnace

Discussion in 'General Electronics Chat' started by Baron, Oct 27, 2010.

  1. Baron

    Thread Starter Active Member

    Jun 15, 2009
    Hi all,
    I'm currently developing a circuit which has to measure very low currents.
    The error budget doesn't allow leakage current greater than 100pA.
    Where can I find some details about the FR4 inherent electrical resistance and the effect of humidity solder mask and conformal coating on it?
    It's an essential input to take into consideration for calculation of the distance between the sensitive etches, type of connectors and materials to use.