Fr-4 (or fr4) is a nema grade designation for glass-reinforced epoxy laminate material. Explore fr4 material in our comprehensive guide. Learn about fr4 pcb material properties, uses, and what makes fr4 an essential choice for pcbs.
Fr4 is a glass-reinforced epoxy laminate, classified as a thermoset composite within the copper-clad laminate (ccl) family. Feb 23, 2021your pcb design begins with an insulating substrate, typically made from a material called fr4, as its core. The designation “fr4” refers to the flame-retardant properties of the.
Feb 11, 2026discover fr4 material's properties, key constituents, and fabrication steps. Learn why fr4 is essential for pcb manufacturing and its benefits in electronic applications.
