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- Typical Properties
Value Units Test Method / Conditions Dielectric Constant, εr, Process 3.48 ± 0.05 - IPC-TM-650, 2.5.5.5 Surface Resistivity 7 x 10^8 MΩ IPC-TM-650, 2.5.17.1 Dielectric Constant, εr, Design 3.66 - Differential Phase Length Method Volume Resistivity 5 x 10^8 MΩ-cm IPC-TM-650, 2.5.17.1 Dissipation Factor tan d, at 10 GHz 0.0037 - IPC-TM-650, 2.5.5.5 Thermal Coefficient of εr 50 ppm/°C IPC-TM-650, 2.5.5.5 Electrical Strength 755 V/mil IPC-TM-650, 2.5.6.2 Tensile Modulus 1128 kpsi ASTM D638 Tensile Strength 19.7 kpsi ASTM D638 Flexural Strength 27 kpsi IPC-TM-650 2.4.4 Dimensional Stability max. 0.5 mm/m IPC-TM-650, 2.4.39A Coefficient of Thermal Expansion - X Axis 10 ppm/°C IPC-TM-650, 2.1.24 Coefficient of Thermal Expansion - Y Axis 12 ppm/°C IPC-TM-650, 2.1.24 Coefficient of Thermal Expansion Z Axis 31 ppm/°C IPC-TM-650, 2.1.24 Thermal Conductivity 0.66 W/m/°K ASTM C518 Moisture Absorption 0.05 % ASTM D570 Tg min. 280 °C IPC-TM-650 2.4.24.3 Decomposition Temperature (Td) 390 °C ASTM D3850 Density 1.92 g/cm3 ASTM D792 Copper Peel Strength 0.88 N/mm IPC-TM-650 2.4.8