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Mechanical properties
Vertical bending strength A: Normal: E-1/150, 150±5℃≥340Mpa
Parallel laminar impact strength (simply supported beam method): ≥ 230KJ/m
Insulation resistance after water immersion (D-24/23): ≥ 5.0×108Ω
Vertical layer to electrical strength (in 90 ± 2 ℃ transformer oil, plate thickness of 1mm): ≥ 14.2MV / m
Parallel layer breakdown voltage (in 90 ± 2 ℃ transformer oil): ≥ 40KV
Relative dielectric constant (50Hz): ≤5.5
Relative permittivity (1MHz): ≤5.5
Dielectric loss factor (50Hz): ≤0.04
Dielectric loss factor (1MHz): ≤0.04
Water absorption (D-24/23, plate thickness 1.6mm): ≤19mg
Density: 1.70-1.90g/cm³
Flammability: FV0
Heat treatment
Melting point of FR-4 process press board (203℃)
High chemical resistance
Low loss coefficient (Df 0.0025)
Stable and low dielectric constant (Dk 2.35)
Thermoplastic material