FR4 substrate is a type of flame-retardant fiberglass composite material used widely in printed circuit boards (PCBs). It consists of layers of woven fiberglass cloth impregnated with epoxy resin, which is then cured under high temperature and pressure to form a rigid laminate.
Commonly recognized for its electrical insulation properties and mechanical strength, FR4 is ideal for applications requiring reliable performance in electronics. It offers excellent dimensional stability, resistance to moisture and chemicals, and can withstand high temperatures, making it suitable for various environments.
Due to its versatility, FR4 is extensively used in consumer electronics, telecommunications, automotive electronics, aerospace, and industrial equipment. Its ability to provide a stable platform for mounting electronic components while ensuring electrical integrity has solidified its status as the industry standard substrate for PCB manufacturing.
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