FR4 PCB
FR-4 is the most popular substrate material for rigid PCBs. At JLCPCB, you can access FR-4 PCB up to 32 layers with controlled impedance. Experience quick turnaround for rigid PCBs in just 24 hours, starting at prices as low as $2.
$6
PCB Coupon
Valid for 30 days
What is FR4 in PCB?
FR-4 refers to a grade of epoxy fiberglass material where the FR stands for "flame retarding". FR-4 is the most common substrate material for rigid PCBs, particularly prototypes. In the PCB, the pre-preg and core will be made of this material. FR-4 materials with higher glass transition temperatures are available for multi-layer boards.
Advantages of FR-4 PCB
Moderate Dielectric Constant: With a dielectric constant of around 4.5 at 1 MHz, FR-4 offers stable electrical performance suitable for various applications.
Good Insulation Performance: The high insulation performance of epoxy resin in FR-4 ensures excellent insulation, preventing short circuits between circuit boards effectively.
High Temperature Resistance: FR-4 exhibits good temperature resistance, capable of withstanding high temperatures up to 150°C or higher, making it suitable for demanding applications.
Cost-Effective Solution: FR-4 is a highly economical PCB substrate material, making it a preferred choice for cost-efficient mass production without compromising quality.
Applications of FR4 PCB
Consumer Electronics: FR4 is integral in smartphones, laptops, wearables, TVs, gaming consoles, and IoT devices, ensuring durability, performance, and reliability in modern electronic circuits.
Automotive Systems: FR4 supports ADAS, power management units, and thermal management in vehicles, offering reliability under harsh conditions and vital thermal performance enhancements.
Industrial Automation and Robotics: FR4 enables reliability under mechanical stress and harsh environments in industrial automation, powering robotic controllers and industrial sensors for seamless operations.
Why JLCPCB's FR4 PCB?
Easy Ordering Process Upload your Gerber file, and you can directly choose FR4 in the Base Material option, then get an instant quote! Easy as online shopping.
Affordable Manufacturing Get 1-8 layer PCBs for just $2! Thanks to the efficient large-scale production, JLCPCB offers unbeatable prices for FR4 PCBs.
Reliable Services Partnering with Industry-leading suppliers, JLCPCB makes in-house production with strict quality control. Fast PCB production in just 24 hours.
Reliable FR4 PCBs, Made Easy with JLCPCB
FAQs
- What does FR4 stand for in FR4 PCB?
FR4 stands for Flame Retardant 4, indicating that the material is a flame-retardant grade of glass-reinforced epoxy laminate used in printed circuit boards.
- What are the limitations of FR4 PCB?
FR4 PCB may suffer from performance limitations at higher frequencies due to dielectric losses, making them less suitable for RF applications and high-speed digital circuits.
- Are there alternatives to FR4 PCB?
Yes, there are alternative materials like Rogers PCBs, ceramic PCBs, and flexible PCBs that offer different characteristics such as better high-frequency performance, thermal conductivity, or flexibility compared to FR4.
- What is the typical operating temperature range for FR4 PCB?
FR4 PCB can typically withstand operating temperatures up to 130-150°C, making them suitable for applications that require heat resistance.