Are PCBs Made Of Fiberglass?
Are PCBs Made Of Fiberglass? These materials can be impregnated with a variety of resins, but epoxy is the most common. Higher performance PCBs might also use metals or ceramics as a substrate. FR-4 (Fig. 1, at left), which uses only woven fiberglass and epoxy, has become the standard substrate for PCBs. What type of