What is fr4?

FR4 is a type of flame-retardant glass-reinforced epoxy resin material commonly used in the manufacturing of printed circuit boards (PCBs). It is known for its high strength, durability, and excellent electrical insulating properties. FR4 is also flame resistant, making it a safe choice for electronic applications.

FR4 material is made by combining layers of woven glass fabric with epoxy resin, which are then cured under high heat and pressure to form a solid composite material. The resulting laminate is rigid, heat resistant, and has good dimensional stability, making it ideal for use in a wide range of electronic devices and systems.

FR4 is typically used in rigid PCBs for applications such as computers, smartphones, medical devices, industrial equipment, and automotive electronics. It is also commonly used in high-frequency PCBs due to its low dielectric constant and loss tangent properties.

Overall, FR4 is a versatile and reliable material that is widely used in the electronics industry for its excellent mechanical and electrical properties. It is a cost-effective option for producing high-quality PCBs that meet the industry's strict performance standards.