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What is FR4?
FR4 is the name of a type of epoxy glazing material. fr stands for flame retardant. 4 refers to the factors that differentiate it from other materials. FR4 means two things.
The material.
As a construction material, it refers to epoxy laminates reinforced with glass fibers. Used to make FR4 printed circuit boards.
Evaluation.
China fr4 pcb assembly is also a unit of evaluation. Epoxy laminates are classified. This classification shows the basic quality of the epoxy resin board.
This classification helps to determine the quality of different types of materials and designs of slabs.
What is FR4 PCB Assembly?
A circuit board with FR4 is called an FR4 PCB (fr4 printed circuit board). China fr4 pcb board is a type of printed circuit board that mainly uses FR4 boards. Originally, FR4 was used as an insulating layer for the PCB. Next FR4 manufacturer adds a layer of copper to both sides of the FR4 board. This makes it a CCL (copper clad laminate). Thanks to FR4, CCL acts as an insulating material. FR4 gives PCBs their strength. In addition, they perfectly absorb moisture and resist fire. This is why these boards are very popular in the market. There is a high demand for FR4 for PCB assembly. FR4 printed circuit boards are compact and easy to design. FR4 boards are popular because they are cheap and can be used in many electrical devices, GreensTone is an professional China fr4 pcb board manufacturer which you can trust.
Certifications and Quality Standards
A reputable FR4 manufacturer should comply with industry certifications such as ISO 9001, IPC guidelines, UL certification, and RoHS compliance to ensure reliability and safety.
Manufacturing Capabilities
The manufacturer should offer single-layer, double-layer, and multilayer FR4 printed circuit board production, along with advanced fabrication processes like precision drilling, routing, and surface finishes such as HASL and ENIG.
Engineering Support and Customization
A professional FR4 circuit board manufacturer should provide PCB layout assistance, prototyping services, and Design for Manufacturability (DFM) analysis to reduce errors and improve efficiency.
Material Quality and Reliability
High-quality FR4 PCB assembly requires premium FR4 laminates with stable dielectric properties, excellent thermal resistance, and moisture protection for long-lasting performance.
Production Capacity and Turnaround Time
The manufacturer should be able to handle both small-batch prototyping and large-scale production with fast lead times and a reliable supply chain.
GreenPCBA meets all these criteria, delivering high-quality FR4 circuit board manufacturing, fast turnaround, and expert engineering support. Contact us for a customized FR4 PCB solution.
China FR4 PCB Assembly is widely used in many complex devices due to its cost-effectiveness and ease of availability. FR4 circuit board manufacturing is a specialized process that requires expertise and precision. As a trusted FR4 manufacturer and contract electronics manufacturing factory, we use cutting-edge technology to produce high-quality FR4 PCBs that meet the needs of various industries. Our China FR4 PCBs are well-suited for applications that require endurance and durability.
For instance:
Screw terminal strips
Transformers
Relays of electric systems
Electric switches
Washers
Standoffs
Arc shields
FR4 material offers outstanding electrical insulation and heat resistance, ensuring stable operation even in harsh environments. Whether for consumer electronics, industrial control systems, or communication devices, FR4 printed circuit boards provide reliable signal transmission and electrical performance.
The fiberglass-reinforced structure of FR4 material gives it high mechanical strength, making it resistant to deformation or breakage during assembly and usage. Whether for single-layer, double-layer, or multilayer PCBs, FR4 provides strong structural support, ideal for high-density and precision electronics.
FR4 PCBs maintain their performance under high-temperature soldering and complex environmental conditions, resisting moisture and warping. This makes them an excellent choice for industrial electronics, automotive applications, and medical devices.
Compared to other high-end PCB materials like ceramic or metal-based PCBs, FR4 material offers a lower cost while still delivering excellent performance. As a professional FR4 circuit board manufacturer, GreenPCBA utilizes advanced manufacturing processes to ensure high-quality PCB production while reducing costs.
Due to its balanced cost, stability, and durability, FR4 PCBs are widely used in consumer electronics, automotive electronics, medical devices, industrial automation, and communication equipment.
Thickness | The thickness of an FR4 sheet varies depending on your device design. normally, you will require an FR4 PCB with a thickness of 0.5mm to 6.4mm. 0.8mm,1.2mm,1.6mm,2.0mm is common to use. |
Impedance Matching | The impedance matching is important in high-frequency PCB. It helps to maintain the function of the board of directors. It also determines the capacitance of the layers in multi-layered boards. |
Space & Flexibility | When you design your board with FR4 material, you will find most of the engineers prefer thinner sheets as they take less space and are more flexible. |
Weight of the FR4 | The thickness of the board determines its weight. For products with lighter weight request, it’s better to choose FR4 boards with thinner thickness. |
Thermal Conductivity | The value of the thermal coefficient of the dielectric constant is determine the temperature management of the FR4. However, FR4 is heat resistant so that it can be widely used. |
