Permitivities of Common Materials

Material Relative Permitivitty Loss Tangent
Alumina 99.5% Pure 9.8 0.0001
FR4 Fiberglass 4.2-4.9 0.01-0.016
GaAs 12.9 0.002
GML-1000 0.030 inch laminate 3.2 +/- 0.05 .002-.005
GML-1000 0.060 inch laminate 3.05 +/- 0.05 .002-.005
PTFE 2.1 0.0003
Quartz 3.78 0.0001
RO4350B 3.48 +/- 0.05 .0031-.0037
RT/duroid 5870 2.33 +/- 0.02 0.0005 - 0.0012
RT/duroid 5880 2.20 +/- 0.02 0.0004 - 0.0009
Silicon Si 11.8
Silicon Dioxide SiO2 4.5
Silicon Nitride Si3N4 7.5


Disclaimer: While I have tried to ensure that the material property data contained here is accurate, I cannot guarantee its accuracy. In no event shall the provider of this information be held liable in the event of a mistake in the reported values.

Wcalc Logo

Information
 About Wcalc
 Reporting bugs
 Current projects
 Obtaining Wcalc
 Technical Notes
 Wcalc F.A.Q.
 Wcalc Home
 Wcalc Sourceforge Project

Models
 Air Core Solenoid Inductor
 Parallel Rectangular Bars Inductance
 Coaxial Transmission Line
 Coplanar Waveguide
 Coupled Microstrip
 Coupled Stripline
 Integrated Circuit Microstrip
 Microstrip
 Series/Parallel RC Network
 Series/Parallel RL Network
 Stripline

Frontends
 CGI-Wcalc (Web Interface)
 GTK-Wcalc (GUI Interface)
 MEX-Wcalc (Matlab Interface)
 Octave-Wcalc (Octave Interface)
 SCI-Wcalc (Scilab Interface)
 STDIO-Wcalc (Simple stdio Interface)

Misc. Info.
 Permeabilities
 Permitivities
 Resistivities
 Unit Conversion Factors
 Wire Sizes

  SourceForge.net Logo  
Copyright © 2001, 2002, 2004, 2005, 2006 Dan McMahill ALL RIGHTS RESERVED.
  Support This Project