Glass-expoy FR4

“FR4 is a high-performance laminate based on epoxy resin reinforced with glass fabric. Due to its combination of high mechanical strength, excellent electrical insulation, and good dimensional stability, FR4 is one of the most widely used materials in electrical engineering and printed circuit board (PCB) manufacturing. The material is resistant to moisture, chemicals, and temperature influences, ensuring reliable performance across a wide range of industrial applications.

Main Properties:

• High mechanical strength and rigidity

• Excellent dielectric properties

• Good dimensional stability

• Resistance to moisture and chemicals

• Temperature resistance up to approximately 130 °C

• Self-extinguishing according to UL 94 V-0

• Easy mechanical machining

Typical Applications:

• Substrates for printed circuit boards (PCB)

• Structural and insulating parts in the electrical industry

• Electrical and electronic components

• Industrial automation and telecommunications

• Automotive electronics and household appliances

Standards:

• IEC 61189 (printed circuit board tests)

• UL 94 V-0 (flammability class)

• IPC-4101 (material for PCBs)

• RoHS compliant

• REACH compliant

Names according to various standards:

• FR4 (commercial name)

• IEC 61249-2-4 (specification for epoxy glass laminate)

• NEMA: G10 (comparable)

• UL 94 V-0 (flammability class)

• Epoxy glass laminate

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