Specification Sheet #: IPC-4101C/24 Reinforcement: Woven E-glass Resin System: primary: Epoxy, secondary: multifunctional Epoxy Flame Retardant Mechanism: Bromine (Minimum UL 94 Requirement: V-1) Fillers: N/A ID Reference: UL/ANSI: FR-4, ANSI: FR-4/24 Glass Transition (Tg): 150 °C - 200 °C
FR408 is a high-performance FR-4 epoxy laminate and prepreg system designed for advanced circuitry applications. Its low dielectric constant and low dissipation factor make it an ideal candidate for broadband circuit designs requiring faster signal speeds or improved signal integrity, FR408 also brings the board reliability with its high Tg. FR408 is compatible with most FR-4 processes. This feature allows the use of FR408 without adding complexity to current fabrication techniques.