FR4 epoxy glass cloth laminate (EPGC202) is a widely used insulating material in the electronics, electrical, power equipment, and industrial manufacturing fields. It combines excellent electrical insulation properties, reliable mechanical strength, and easy processing performance, and is commonly used in the production of PCB substrates, electrical insulation structural components, and precision industrial parts.
To help you complete your selection and procurement work more efficiently, this article will provide a systematic and detailed introduction to FR4 EPGC202 from three dimensions: technical specifications, typical applications, and price range.
FR4 is a composite insulating board material, using glass fiber cloth as the reinforcing material and epoxy resin as the matrix, formed through a high-temperature and high-pressure lamination process.
FR4 EPGC202 is a common grade under the EN/IEC standard system. Its overall performance is balanced, and it is suitable for most electrical and industrial applications.
Excellent electrical insulation properties
Stable mechanical strength and dimensional stability
Outstanding processing adaptability
High cost-effectiveness and mature application technology
If you are looking for the technical specifications of FR4 epoxy glass cloth laminate EPGC202, the following are the key performance indicators of this material (usually corresponding to light green or yellow sheets):
♦ Base Material: Made of electrical-grade alkali-free glass cloth, impregnated with epoxy resin.
♦ Color: Standard colors are light green and yellow. Some manufacturers offer black sheets (please confirm with the manufacturer’s production range).
♦ Operating Temperature: Class B insulation, with a standard operating temperature of up to 130℃ and a short-term operating temperature up to 150℃.
♦ Flame Retardancy: Meets UL94 V-0 rating (vertical burning test standard, with self-extinguishing characteristics).
♦ Physical and Mechanical Properties
Density: 1.95 – 2.10 g/cm³
Flexural Strength: ≥ 400 MPa
Water Absorption: Extremely low (usually ≤0.15%), excellent dimensional stability.
♦ Electrical Properties
Breakdown Voltage: In a 90℃ transformer oil environment, the parallel lamination breakdown voltage is typically ≥ 35kV.
Insulation Resistance: Extremely high value, it can still maintain good insulation performance even after being immersed in water.
FR4 is one of the most commonly used PCB substrate materials. The EPGC202 model is suitable for single-sided, double-sided, and multilayer circuit boards. It provides stable electrical performance and robust structural support for circuit boards.
FR4 EPGC202 laminates have a wide range of applications as insulation components, mainly including:
Transformer insulation boards
Motor insulation gaskets
Internal insulation components for switch cabinets and power distribution equipment
In scenarios with specific requirements for insulation, mechanical strength, and processing precision, FR4 EPGC202 is often used as structural support components, fixing plates, and isolation components.
FR4 EPGC202 can be applied to communication equipment and new energy inverter systems, undertaking the dual functions of insulation and structural support.
The price of FR4 EPGC202 is mainly influenced by the following factors:
Sheet thickness
Dimensions and size specifications
Purchase quantity
Whether precision machining or customized processing is required
| Thickness | Reference Price (RMB / m²) |
| 0.5 – 1.0 mm | ¥40 – ¥100 |
| 2.0 – 3.0 mm | ¥80 – ¥180 |
| 4.0 – 6.0 mm | ¥150 – ¥260 |
| ≥ 8.0 mm | Quoted separately according to specifications |
Notes:
Factory-direct supply and bulk purchases usually offer more competitive pricing.
Special sizes, tight tolerance requirements, or CNC-machined parts require separate price calculations.
When purchasing FR4 epoxy glass cloth laminate EPGC202, we recommend focusing on the following points:
Request a Test Report: Request the supplier to provide a test report conforming to IEC 60893 standards to confirm that key indicators such as electrical strength and water absorption meet the standards.
Observe the Appearance: High-quality boards should have a smooth, flat surface, free of bubbles and delamination, and it should have a uniform color.
Test Machinability: EPGC202 should have good machinability. It should not easily chip during drilling and should not produce burrs during milling.
Due to frequent price fluctuations in raw materials such as epoxy resin and electronic-grade glass cloth, the market price of FR4 epoxy glass cloth laminate EPGC202 is highly volatile. The prices mentioned above are for historical reference only. If you are planning a purchase or preparing to initiate a project, we recommend obtaining the latest quotation.
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