Is FR4 a resin?
FR4 is typically a fiberglass-reinforced epoxy resin composite rather than a single resin. FR4 is a common insulating material widely used in the manufacturing of electronic circuit boards (PCBs).
Specifically, FR4 is a composite material composed of fiberglass cloth and an epoxy resin matrix. Fiberglass provides strength and rigidity, while epoxy provides insulating properties and fills the voids between the fiberglass. The composite remains stable at high temperatures and has good insulating properties, making it suitable for insulation and support applications in electronic equipment.
Therefore, FR4 is a composite material that combines fiberglass and epoxy resin and is commonly used in the manufacture of PCBs and other applications that require high strength and insulation properties.