Material Dielectric Constant FR4 (Mil-P-13949 = GF) 4.2-4.9 Woven Glass/Epoxy FR5 (Mil-P-13949 = GH) 4.2-4.9 Woven Glass/Epoxy FR5 (Mil-P-13949 = GP) 2.2-2.4 Non-woven Glass/Teflon FR5 (Mil-P-13949 = GR) 2.2-2.4 Non-woven Glass/Teflon FR5 (Mil-P-13949 = GT) 2.6-2.8 Woven Glass/Teflon FR5 (Mil-P-13949 = GX) 2.4-2.6 Woven Glass/Teflon GPY (Mil-P-13949 = GI) 4.0-4.7 Woven Glass/Polyimide GPY (Mil-P-13949 = GY) 2.1-2.45 Woven Glass/Teflon GPY (Mil-P-13949 = AE) 3.8-4.5 Woven Aramid/Epoxy GPY (Mil-P-13949 = AI) 3.6-4.4 Woven Aramid/Polyimide GPY (Mil-P-13949 = QI) 3.0-3.8 Woven Quartz/Polyimide GPY (Mil-P-13949 = GM) 4.0-4.7 Woven Glass/BT GPY (Mil-P-13949 = CF) 4.2-4.9 Non-woven Polyester/Epoxy GPY (Mil-P-13949 = GC) 4.0-4.7 Woven Glass/Cyanate Ester GPY (Mil-P-13949 = GC) 2.2 Teflon GPY (Mil-P-13949 = GC) 3.5 Polyimide The following are available from ROGERS Corporation Microwave Material Division 100 S. Roosevelt Avenue Chandler, AZ 85226-3415 602-961-1382 http://www.rogers-corp.com RT/duroid 6006 6.15 +/- 0.150 RT/duroid 6010LM 10.2 +/- 0.250 RT/duroid 6002 2.94 +/- 0/040 RT/duroid 5880 2.20 +/- 0.02 RT/duroid 5870 2.33 +/- 0.02 RO3003 3.0 +/- 0.04 RO3006 6.15 +/- 0.15 RO3010 10.2 +/- 0.30 RO4003 3.38 +/- 0.05 RO4350 3.48 +/- 0.05 TMM3 3.27 +/- 0.016 TMM4 4.50 +/- 0.045 TMM6 6.00 +/- 0.080 TMM10 9.20 +/- 0.230 TMM10i 9.80 +/- 0.245 The following are availabe from Microwave Materials Division 1100 Governor Lea Road Bear, Delaware 19701 302-834-2100 (phone) 302-834-2574 (fax) http://www.arlonmed.com Mil-S-13949 Woven Fiberglass Reinforced PTFE-Unidirectional DiClad522 GT 2.40-2.60 +/- 0.05 DiClad527 GX 2.40-2.60 +/-0.0022 DiClad870 GY 2.33 +/-0.02 DiClad880 GY 2.17, 2.20 +/-0.02 Woven Fiberglass Reinforced PTFE-Corssplied CuClad250GT GT 2.40-2.60 +/-0.05 CuClad250GX GX 2.40-2.60 +/-0.04 CuClad233LX GY 2.33 +/-0.02 CuClad217LX GY 2.17, 2.20 +/-0.02 Commercial Grade AR320 3.20 +/-0.05 AD300 3.00 +/- 0.05 Non-Woven Fiberglass Reinforced PTFE IsoClad933 2.33 +/- 0.04 IsoClad917 2.17, 2.20 +/-0.04 Ceramin Filled PTFE AR1000 10.0 Nominal AR600 6.0 Nominal AR450 4.5 Nominal AR350 3.5 Nominal CLTE 2.94 Nominal Thermoplastic Bond Film CuClad6250 2.32 +/- 0.10 CuClad6700 2.35 +/- 0.10 The following data was obtained from http://www.taconic-add.com/tlc2.htm Taconic Headquarters Advanced Dielectric Division 136 Coonbrook Road Petersburgh, NY USA 518-658-3202 (phone) 518-658-3988 (fax) Mil-P-13494 Test Method TLC-35 3.20 @10GHz TLC-95 2.95 @10GHz TLT-9 2.50 @10GHz TLX-9 2.50 @10GHz TLY-5A 2.17 @10GHz CER-10 10 @10GHz RF-35 3.50 @1.9GHz