F4BME245 is manufactured through a scientifically formulated process and strict pressing techniques, utilizing fiberglass cloth, polytetrafluoroethylene (PTFE) resin, and PTFE film. Its electrical performance is enhanced compared to F4B, primarily reflected in a wider dielectric constant range, lower dielectric loss, increased insulation resistance, and improved stability, making it a viable alternative to similar international products.

F4BM and F4BME share the same dielectric layer but differ in the copper foil used: F4BM is paired with ED copper foil, suitable for applications without PIM requirements; F4BME is paired with reverse-treated RTF copper foil, offering excellent PIM performance, more precise circuit control, and lower conductor loss.

F4BM and F4BME achieve precise dielectric constant control by adjusting the ratio between PTFE and fiberglass cloth, ensuring low loss while enhancing material dimensional stability. A higher dielectric constant corresponds to a higher fiberglass ratio, resulting in better dimensional stability, lower coefficient of thermal expansion (CTE), improved thermal drift performance, and relatively increased dielectric loss.

Product Features

• DK2.45
• Low loss
• F4BME paired with RTF copper foil for excellent PIM performance
• Diverse size options for cost efficiency
• Radiation resistance, low outgassing
• Commercial availability, high-volume production, cost-effective

Typical Applications

• Microwave, RF, radar systems
• Phase shifters, passive components
• Power dividers, couplers, combiners
• Feed networks, phased array antennas
• Satellite communications, base station antennas

Company Profile

Founded in 2003, Shenzhen Bicheng Electronics Technology Co., Ltd. is a well-established supplier and exporter of high-frequency PCBs based in Shenzhen, China. With 18 years of industry experience, the company serves global sectors including cellular base station antennas, satellite communications, high-frequency passive components, microstrip and stripline circuits, millimeter-wave equipment, radar systems, and digital RF antennas. The company’s high-frequency PCBs are primarily manufactured using three major high-frequency material brands: Rogers Corporation, Taconic, and Wangling, with dielectric constants ranging from 2.2 to 10.2. Headquartered in the economically vibrant city of Shenzhen, Bicheng PCB operates with a philosophy rooted in serving small and medium-sized enterprises, offering a wide variety of circuit boards to meet diverse market demands.

Main Business & PCB Applications

The company upholds the highest manufacturing standards to deliver products known for exceptional quality, performance, and reliability. In addition to high-frequency PCBs, Bicheng has divisions specializing in FR-4 circuit boards, flexible circuits, and metal-core PCBs, supporting everything from prototyping and small runs to mass production. The company actively develops value-added PCB solutions such as HDI, quick-turn production, impedance control, heavy copper, and backplane boards. This strategic focus enables Bicheng to offer an extended and complementary product range, forming an integrated line that spans from low-end to high-end PCBs. These circuit boards are widely used in home appliances, portable and consumer electronics, medical devices, aerospace, and telecommunications.

Main Material Partners