FR4 PCB are the most widely used type of printed circuit boards in the electronics industry today. Known for their excellent mechanical strength, durability, and electrical insulation, FR4 PCB Boards provide a reliable foundation for countless electronic applications, from consumer devices to industrial equipment.
At PCB You we specialize in top-grade FR4 PCBs tailored to meet your specific requirements, ensuring superior performance and long-term reliability.
FR4 refers to a grade of fiberglass-reinforced epoxy laminate material, widely recognized for its exceptional strength and flame resistance. The "FR" stands for "Flame Retardant," and "4" designates the specific performance grade according to NEMA standards.
An FR4 PCB Board uses this material as the core substrate for supporting copper circuits, making it the backbone of most printed circuit boards today. Its excellent balance of mechanical, thermal, and electrical properties makes FR4 the material of choice across a broad range of industries.
- High Mechanical Strength: Provides sturdy support for the copper layers and electronic components.
- Excellent Electrical Insulation: Maintains signal integrity and prevents electrical shorts.
- Good Thermal Resistance: Operates effectively across a wide temperature range.
- Moisture Resistance: Offers reliable performance even in humid conditions.
- Lightweight and Durable: Ensures easy handling and long-lasting functionality.
- Cost-Effective: Delivers high performance at a reasonable price point.
FR4 is a glass-reinforced epoxy laminate known for its outstanding balance of mechanical, electrical, and thermal properties, making it the most commonly used base material for printed circuit boards.
Here are the key properties that define FR4 material:
- High Tensile Strength: FR4 offers strong resistance to mechanical stress and bending.
- Excellent Dimensional Stability: Maintains shape and structure even under varying environmental conditions.
- Durability: Highly resistant to wear, shock, and mechanical vibration.
- High Dielectric Strength: Provides strong electrical insulation even at high voltages.
- Low Dielectric Constant (Dk): Typically ranges from 4.2 to 4.8, ensuring minimal signal loss.
- Low Dissipation Factor (Df): Results in high signal integrity, especially critical for high-frequency applications.
- High Insulation Resistance: Reduces the risk of leakage currents.
- Glass Transition Temperature (Tg): Standard FR4 Circuit Board Material has a Tg of around 130°C to 140°C; Mid Temp Tg FR4 materials can withstand 140°C- 150°C; High-Tg FR4 materials can withstand up to 170°C–180°C.
- Thermal Conductivity: Typically around 0.25 W/m·K, suitable for most general electronics.
- Flame Resistance: Complies with UL94 V-0 standards, meaning it self-extinguishes after ignition.
- Moisture Resistance: FR4 absorbs very little moisture, ensuring reliable operation in humid environments.
- Chemical Resistance: Resistant to many chemicals, solvents, and cleaning agents commonly used during PCB fabrication and maintenance.
- Lightweight: Despite its strength, FR4 Circuit Board is relatively light, aiding in the creation of portable and compact devices.
- Smooth Surface Finish: Ideal for accurate copper lamination and multilayer stacking.
- Versatility: Suitable for single-layer, double-layer, and multilayer PCB designs.
- Customization: Available in a variety of PCB thicknesses (commonly 0.2 mm to 3.2 mm) and copper weights (from 0.5 oz to 6 oz).
- Consistency: Delivers reliable performance for both simple and complex circuits.
- Flame Retardancy: Ensures safety compliance for sensitive applications.
- Compatibility: Works with various soldering and assembly techniques.
At PCB You, we offer a wide range of FR4 PCBs to meet your needs:
- Single-Sided FR4 PCBs
- Double-Sided FR4 PCBs
- Multilayer FR4 PCBs (up to 40+ layers)
- High-TG FR4 PCBs (for high-temperature applications)
- Heavy Copper FR4 PCBs (for high-current designs)
- Rigid-Flex PCBs with FR4 Core
- We offer comprehensive manufacturing services, including:
- Various board thicknesses: 0.2 mm to 6.0 mm
- Copper thickness: 0.5 oz to 6 oz
- Minimum trace width/spacing: 3/3 mil
- Minimum drill size: 0.1 mm
- Surface finishes: HASL, ENIG, OSP, Immersion Silver, Gold Plating
- Solder mask colors: Green, Red, Blue, Black, White, and more
- Rapid prototyping and high-volume production
Contact us today to discuss your project or request a free quote! Let’s build high-quality PCBs that power your innovations.