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Electrical Property

Parylene Electrical Properties Parylene N Parylene C Parylene D Parylene F Parylene HT Epoxides Silicones Urethanes Acrylic
（VT4) (AF4) ER SR UR AR
Dielectric Strength
 7000 5600 5500 5300 5400 2200 2000 3500 3500
DC volts/mil short time，1mil filmsa
Volume Resistivity 1.4×1017 8.8×1016 1.2×1017 1.1*1017 2.0×1017 1.0*1016 1.0*1015 1.0*1013 1.0*1015
ohm-cm 23°C 50%RHb
Surface Resistivity 1.0*1013 1.0*1014 1.0*1016 4.7*1017 5.0*1015 1.0*1013 1.0*1013 1.0*1014 1.0*1014
ohms 23°C 50%RHb
Dielectric Constantc 60Hz 2.65  3.15  2.84  2.20  2.21  3.3-4.6 3.1-4.2 4.1 _
1KHz 2.65  3.10  2.82  2.25  2.20  _ _ _ _
1MHz 2.65  2.95  2.80  2.42  2.17  3.1-4.2 3.1-4.0 3.8-4.4 2.7-3.2
Dissipation Factorc 60Hz 0.0002 0.02 0.004 _ ＜0.0002 0.008-0.011 0.011-0.02 0.038-0.039 0.04-0.06
1KHz 0.0002 0.019 0.003 0.0013 0.002 _ _ _ _
1MHz 0.0002 0.013 0.002 0.008 0.001 0.004-0.006 0.003-0.006 0.068-0.074 0.02-0.03
1GHz _ ＜0.007 _ _ _ _ _ _ _

aASTMD 149
bASTMD 257,1 in2 mercury electrodes
cASTMD 150,1 in2 mercury electrodes
（1）Properties measured on Parylene films,0.001 in thick
（2）Properties and methods as reported in Modern Plastics Enclyclopedia,issue for 1968,Vol.45/No.1A,McGraw Hill,New York，1967