Essential details
MOQ:1
Lead time:15-30days
Shipping:Express Delivery, Ocean freight, Air freight, Land freight
Product Introduction
FR4 Fiberglass Epoxy Resin Sheet
FR-4 is made from woven fiberglass cloth and epoxy resin. The fiberglass gives it strength, while the resin provides insulation and heat resistance. This combination makes FR-4 strong, light, and ideal for printed circuit boards. The name FR-4 means Flame Retardant Grade 4. It’s a standard set by the NEMA to ensure safety and quality.
Key Features of FR4 Fiberglass Epoxy Resin Sheet：
- Mechanical Strength
FR-4 epoxy sheet offers high strength and rigidity, maintaining excellent dimensional stability under stress. It reliably supports electronic components without bending or cracking, making it suitable for single-layer and multilayer PCBs. - Electrical Insulation
FR-4 provides stable electrical insulation with a consistent dielectric constant and low dissipation factor, helping reduce signal loss and interference for safe and efficient power transmission. - Thermal & Environmental Resistance
With a glass transition temperature (Tg) of 130°C–180°C, FR-4 withstands high soldering temperatures. It also features low moisture absorption and strong flame resistance, ensuring stable performance in humid and high-temperature environments. - Long-Term Reliability
FR-4 delivers consistent mechanical and electrical performance over time. Its durability and stability make it the most widely used epoxy laminate material in the electronics industry.
Product Parameters：
| Product Name | FR4 Fiberglass Epoxy Resin Sheet |
|---|---|
| Place of Origin | Zhenjiang, China |
| Brand Name | TY-Elec |
| Certificate | RoHS ISO SGS |
| Material | Epoxy Resin |
| Maximum Voltage | 20~100KV |
| Thermal Rating | F155 |
| Flame Retardant Grade | UL94 V-0 |
| Color | Yellow/Green/Black/White |
| OEM/ODM | Accept |
| Thickness | 0.5-150mm |
| Size | 1020x2040mm/1220x2020mm/1020x1220mm or Customized |
| Applications | for Transformer/Batteries/Lithium Batteries |
| Packing | Cartons |
Applications of FR4 Fiberglass Epoxy Resin Sheet：
- PCB Substrate for Electronics Manufacturing
FR-4 is the standard base material for printed circuit boards (PCBs). Supplied as copper-clad laminate, it supports single-layer, double-layer, and multilayer PCB structures. Its stable dielectric properties and mechanical strength ensure reliable signal transmission and long-term performance in electronic devices. - Electrical Insulation & Mechanical Support
With excellent electrical insulation, heat resistance, and rigidity, FR-4 is widely used for insulation plates, spacers, standoffs, terminal boards, and transformer insulation components. It provides strong structural support while maintaining safety in electrical systems. - Industrial, Automotive & Power Applications
FR-4 is commonly applied in consumer electronics, automotive electronics, industrial equipment, power distribution systems, and aerospace components. Its flame resistance and durability make it a trusted material for demanding electrical and mechanical environments.
