FR4_Flame Retardant 4

A standard epoxy-glass PCB material.

Advantages

~ It meets the requirements of Underwriters Laboratories UL94-V0, which exhibits flammability characteristics that are self-extinguishing.

~The cheaper alternatives have higher dielectric losses at high frequencies.

~ It absorb more moisture

~ Provide less strength and stiffness.

~ Assuming a rise/fall time >1 ns, trace lengths up to 10 inches can be supported for data rate of 150 Mbps.

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