isola fr408 is mid loss, epoxy laminate and prepreg, isola fr408 is a high-performance FR-4 epoxy laminate and prepreg system designed for advanced circuitry applications. The PCB material TG of FR4 is usually 130 and 180 or higher. For example, the practical frequency of isola 370hr can reach 10G. The application of isola 370hr is mostly in high-frequency communication, microwave, high-speed digital circuits and other fields. But the loss of isola 370hr is too large, and it is still similar to ordinary FR4. The biggest advantage is that the temperature stability will be better. The loss of isola fr408 is only one tenth of isola 370hr. This is another product besides isola 370hr. isola fr408 low dielectric constant (Dk) and low dissipation factor (Df) make it an ideal candidate for broadband circuit designs requiring faster signal speeds or improved signal integrity. isola fr408 is compatible with most FR-4 processes. This feature allows the use of isola fr408 without adding complexity to current fabrication techniques.