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FR4-06: Woven Fiberglass, Flame-Retardant

Physical Properties Values Units
Resin / Base Polyester Glass -
Color Tan -
Fungus Resistance Excellent -
Solvent Resistant Very Good -
Specific Gravity 1.80 -
Transparency Poor -
Water Absorption 0.18 %
Mechanical Properties Values Units
Compressive Strength 29 PSI x 10^3
Flexural Strength - Length 21 PSI x 10^3
Flexural Strength - Cross 21 PSI x 10^3
Flexural Modulus - Length 1.4 PSI x 10^6
Flexural Modulus - Cross 1.3  PSI x 10^6
Izod Impact - Length 3.5 Ft. lbs/In. notch
Laminate Bond Strength N/A Lbs
Punching Temperature 75 °F
Rockwell Hardness 93 M Scale
Electrical Properties Values Units
Capacitance Drift Excellent -
Dielectric Constant 1 MHz 4.2 D24/23
Dissipation Factor 1 MHz .017 D24/23
Dielectric Breakdown (Para) 70 KV
Dielectric Strength (Perp) 500 V/MIL
Resistivity Surface 10 Megohms x 10^4
Insulation Resistance (EIA Pattern) 1.0 Megohms x 10^6
Thermal Properties Values Units
Glass Transition 165 °C
Thermal Conductivity 1.5 (5)
Coefficient of Expansion - Length 1.0 In./In./C x 10^-5
Coefficient of Expansion - Cross 1.0 In./In./C x 10^-5
Underwriter Lab Rating Values Units
Flammability 94V-0 -
High Ampere Arc 190 Cycles
High Voltage Tracking 0.0 In./Min
Soldering Limits - 500F 60 Seconds
Soldering Limits - 525F 30 Seconds
Maximum Operating Temperature 130 °C

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