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FR-4 performance characteristics?

Release date:2015-04-13 14:56:10

Basic features

Vertical layer bending strength A: Normal: E-1/150, 150±5°C≥340Mpa
Parallel layered impact strength (simple beam method): ≥230KJ/m
Insulation resistance after immersion in water (D-24/23): ≥5.0×108Ω
Electrical strength in vertical direction (in 90±2°C transformer oil, thickness 1mm):≥14.2MV/m
Parallel layer breakdown voltage (at 90±2°C in transformer oil): ≥40KV
Relative permittivity (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
Process characteristics

(1) Melting point of FR-4 process plate (203°C)
(2) High chemical resistance
(3) Low loss factor (Df 0.0025)
(4) Stable and low dielectric constant (Dk 2.35)
(5) Thermoplastic materials
Features

FR-4 epoxy fiberglass cloth substrate is a type of substrate using epoxy resin as the binder and electronic grade glass fiber cloth as the reinforcing material. Its adhesive sheet and core thin copper clad laminate are important substrates for making multilayer printed circuit boards.

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