Dual Layer F4B High Frequency PCB board with 1.5mm PTFE (Teflon) thickness, 3 oz of

copper, and immersion gold

(PCB's are custom-made products, the picture and parameters shown are just for reference)

Hello everybody,

Today, we will focus on a specific type of high-frequency circuit board made from F4B series materials.

The F4B series is primarily composed of PTFE (Polytetrafluoroethylene) glass fiber cloth and ceramic-

filled PTFE glass fiber cloth. As a high-frequency material produced by a Chinese brand, it offers a cost-

effective solution without compromising on stability and quality.

Due to its reliable performance and affordability, F4B materials are widely used in applications such as

radar systems, navigation equipment, satellite communications, as well as 4G and 5G telecommunications.

PCB Specifications

The main specifications of this board is double sided board, substrate is F4B, DK at 2.65, 210mm long by

115mm wide, 1.6mm finished thick, finished copper 3oz, no solder mask no silkscreen, and surface finish

is immersion gold.

Let’s see the stack up.

Top layer and bottom layer are 3oz copper finished. F4b dielectric material is in the middle of 2 layers copper,

showing dielectric constant at 2.65

From the photo of this board, the track is thicker than normal boards; surface finish is immersion gold and

no solder mask and silkscreen.

Our PCB Capability (PTFE)

The dielectric constant of F4B material is broad, ranging from 2.2 to 3.0, making it suitable for a variety

of high-frequency applications. The board thickness can vary from 0.17mm to 5.0mm, providing flexibility

for different design requirements.

We offer a full range of services, including prototype development, small batch production, and mass

production to meet your specific project needs.

If you have any questions or require further information, please don't hesitate to contact us.

Thank you for taking the time to read this overview.

Appendix: Data Sheet of PTFE(F4B)

Established in 2003, Bicheng Technologies Limited is a reputable supplier and exporter of high frequency PCBs based in Hong Kong, China. With 20 years of experience, we specialize in serving global markets in various fields such as cellular base station antennas, satellites, high frequency passive components, microstrip and band line circuits, millimeter wave equipment, radar systems, digital radio frequency antennas, and more.

Our high frequency PCBs primarily utilize materials from renowned brands including Rogers Corporation, Taconic, and Wangling, Shengyi and Zhongying etc. These materials offer a wide range of dielectric constants, ranging from 2.2 to 10.2, ensuring optimal performance for diverse applications.

In addition to high frequency PCBs, we also have dedicated divisions for FR-4 circuit boards, flexible circuits, and metal core PCBs. Our capabilities cover prototype development, small production runs, and large-scale mass production. We actively pursue high-value PCB projects such as HDI (high-density interconnects), quick turnarounds, impedance control, heavy copper, and backplane boards. This comprehensive approach allows us to offer a complete range of PCB products, catering to both low-end and high-end requirements.

Our PCBs find applications in various industries, including computer networking, safety and surveillance systems, power supply units, telecommunication devices, automotive electronics, medical apparatus and instruments, national defense, industrial equipment, and more. We are dedicated to delivering high-quality PCB solutions that meet the diverse needs of our customers.