
YD-FG205 FR4 fiberglass Sheets
FR4 Fiberglass Sheets: Flame retardant, heat resistant, moisture stable, excellent electrical performance, high mechanical strength, widely used in the field of electronic insulation.
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Product Introduction
FR4 epoxy glass fiber laminate is a type of laminate formed by immersing glass fiber cloth in epoxy resin and then forming it through heat and pressure. It is suitable for use in isothermal and medium temperature conditions, offering certain mechanical and electrical performance for mechanical, electrical, and electronic insulation components. The material is made by impregnating glass fiber cloth with brominated epoxy resin, then heated and pressed. It exhibits high mechanical and dielectric properties, flame resistance, good heat and moisture resistance, and is easily machinable.
Product Dimension
| Specification Overview | |
|---|---|
| Name | YD-FG205 FR4 epoxy glass fiber laminated sheet |
| Base Material | Epoxy Resin + Glass Fiber |
| Color | aquamarine |
| Thickness | 0.3mm – 150mm ( More than 300mm can be produced according to product requirements) |
| Size | Standard sizes are 1020x1220mm, 1220x2020mm,1220x2440mm; for special sizes, we can produce and cut according to customer's requirements. |
| Density | 2.0–2.1g/cm³ |
| Product Technical Specifications | ||||
|---|---|---|---|---|
| Specification Name | Unit | Specification Value | ||
| Density | g/cm³ | 2.0-2.1 | ||
| Water Absorption | % | ≤ 0.5 | ||
| Flexural Strength Perpendicular to Laminations | MPa | ≥ 340 | ||
| Compressive Strength Perpendicular to Laminations | MPa | ≥ 350 | ||
| Impact Strength Parallel to Laminations (Charpy method with notch) | KJ/m² | ≥ 37 | ||
| Shear Strength Parallel to Laminations | MPa | ≥ 34 | ||
| Tensile Strength | MPa | ≥ 300 | ||
| Dielectric Strength Perpendicular to Laminations at 90°C ± 2°C in oil | 1mm | KV/mm | ≥ 14 .2 | |
| 2mm | ≥ 11 .8 | |||
| 3mm | ≥ 10 .2 | |||
| Breakdown Voltage Parallel to Laminations at 90°C ± 2°C in oil | kV | ≥ 40 | ||
| Dielectric Dissipation Factor (at 50 Hz) | – | ≤ 0 .04 | ||
| Insulation Resistance Normal | Normality | Ω | ≥ 5 .0 × 1012 | |
| After 24 hours immersion in water | ≥ 5 .0 × 1010 | |||
| Flammability (UL-94) | Rating | V- 0 | ||
Product Features
- Excellent Electrical Insulation(Dielectric Strength: >= 15 kV/mm): Provides reliable dielectric performance for electrical and electronic insulation applications.
- High Mechanical Strength(345-450mpa): Reinforced with woven fiberglass cloth for excellent strength, rigidity and impact resistance.
- Multiple Material Grades(G10, FR4 and G11): Available in G10, FR4, G11 and other epoxy fiberglass laminate grades for different operating conditions.
- Reliable Heat Resistance (Class B/F): Maintains stable mechanical and electrical properties under elevated operating temperatures.
- Low Moisture Absorption(0.1%-0.3%): Offers dependable insulation performance in humid and moisture-prone environments.
- Flame-Retardant FR4 Available(UL94-V0): FR4 grade provides flame-retardant performance for applications requiring enhanced fire safety.
- Precision CNC Machining(Tolerance: Up to +/- 0.10 mm): Supports cutting, drilling, milling and customized fabrication according to drawings or samples.
- Custom Sizes and Thicknesses(0.2-100mm): Sheets, strips and finished components can be supplied in customized dimensions for different projects.
Product Display




Purchasing Steps

Delivery Time
- The general delivery cycle is: 15-20 working days.
If you have special requirements for the product, you can inform me through online chat, email, WhatsApp, or any other method, and we will contact you within the same day to address your concerns.


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