FR-4 (or FR4) is a NEMA grade designation for glass-reinforced epoxy laminate material. FR-4 is a composite material composed of woven fiberglass cloth with an epoxy resin binder that is flame resistant (self-extinguishing).
FR4 PCB Deep Guide: Real Specs & When to Use (or Avoid) It
FR4 (Flame Retardant 4) is a glass-reinforced epoxy laminate used as the primary substrate material in PCB fabrication. It consists of woven fiberglass fabric and epoxy resin, making it strong, lightweight, and electrically insulating.
Explore FR4 material in our comprehensive guide. Learn about FR4 PCB material properties, uses, and what makes FR4 an essential choice for PCBs.
FR-4 (sometimes written as FR4) is a widely used material for PCB. It’s a composite made by combining woven fiberglass cloth with flame-retardant epoxy resin, giving it both strength and electrical insulation.
FR4 material is a glass laminate made for boards specifically. In PCB design or PCB prototypes, a commonly used substrate material for PCBs is FR-4, which offers good heat, flame, and electrical insulation features.
FR4 is the most popular type of PCB laminate, and its material properties are well-documented. We’ve compiled the important material properties for FR4, including FR4 dielectric constant, thermal conductivity, and more.