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60mil F4BM220 High Frequency PCB Double Sided Immersion Gold Circuit

China Bicheng Electronics Technology Co., Ltd certification
China Bicheng Electronics Technology Co., Ltd certification
Kevin, Received and tested the boards - thanks very much. These are perfect, exactly what we needed. rgds Rich

—— Rich Rickett

Ruth, I got the PCB today, and they are just perfect. Please stay a little patience, my next order is coming soon. Kind regards from Hamburg Olaf

—— Olaf Kühnhold

Hi Natalie. It was perfect, I attach some pictures for your reference. And I send you next 2 projects to budget. Thanks a lot again

—— Sebastian Toplisek

Kevin, Thanks, they were perfectly made, and work well. As promised, here are the links for my latest project, using the PCBs you manufactured for me: Regards, Daniel

—— Daniel Ford

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60mil F4BM220 High Frequency PCB Double Sided Immersion Gold Circuit

60mil F4BM220 High Frequency PCB Double Sided Immersion Gold Circuit
60mil F4BM220 High Frequency PCB Double Sided Immersion Gold Circuit

Large Image :  60mil F4BM220 High Frequency PCB Double Sided Immersion Gold Circuit

Product Details:
Place of Origin: CHINA
Brand Name: Bicheng
Certification: UL, ISO9001, IATF16949
Payment & Shipping Terms:
Minimum Order Quantity: 1PCS
Price: USD9.99/PCS-99.99/PCS
Packaging Details: Vacuum bags+Cartons
Delivery Time: 8-9 working days
Payment Terms: T/T
Supply Ability: 5000PCS per month
Detailed Product Description
High Light:

Immersion Gold Circuit RF PCB Board


High Frequency PCB Board 60mil


High Frequency PCB Circuit Board

Introducing our newly shipped RF PCB, specifically designed for high-frequency applications and built using the advanced F4BM220 material. This cutting-edge printed circuit board combines polytetrafluoroethylene resin, polytetrafluoroethylene film, and glass fiber cloth through a meticulous manufacturing process. With its exceptional electrical performance, the F4BM220 RF PCB offers a wider range of dielectric constant, low dielectric loss, increased insulation resistance, and enhanced stability compared to its predecessor, F4B. It serves as an excellent substitute for similar foreign products.


Crafted with forward rotating ED copper foil for cladding, the F4BM220 RF PCB is specifically tailored for applications that do not require PIM (Passive Intermodulation) indicators, ensuring optimal performance for RF systems.


The F4BM220 series laminates employ a precise adjustment of the dielectric constant by modifying the ratio between polytetrafluoroethylene and glass fiber cloth. This technique not only achieves low loss but also enhances the dimensional stability of the material. As the dielectric constant increases, the proportion of glass fiber also increases, resulting in improved dimensional stability, a lower coefficient of thermal expansion, better temperature fluctuation performance, and increased dielectric loss.


Data sheet of PTFE

Name Test condition Unit Value
Density Normal state g/ cm3 2.1~2.35
Moisture Absorption Dip in the distilled water of 20±2℃ for 24 hours % ≤0.02
Operating Temperature High-low temperature chamber -50℃~+260℃
Thermal Conductivity   W/m/k 0.8
CTE (typical) 0~100℃ (εr :2.1~2.3) ppm/℃ 25(x)
CTE (typical) 0~100℃ (εr :2.3~2.9) ppm/℃ 14(x)
CTE (typical) 0~100℃ (εr :2.9~3.5) ppm/℃ 12(x)
Shrinkage Factor 2 hours in boiling water % 0.0002
Surface Resistivity 500V DC Normal state M·Ω ≥1×104
Constant humidity and temperature ≥1×103
Volume Resistivity Normal state MΩ.cm ≥1×106
Constant humidity and temperature ≥1×105
Pin Resistance 500V DC Normal state ≥1×105
Constant humidity and temperature ≥1×103
Surface dielectric strength Normal state d=1mm(Kv/mm) ≥1.2
Constant humidity and temperature ≥1.1
Dielectric Constant 10GHZ εr 2.20,2.55,2.65,3.0,3.5 (±2%)
Dissipation Factor 10GHZ tgδ 2.2 ≤7×10-4
2.55~2.65 ≤1×10-3
3.0~3.5 ≤1.5×10-3


Key Features:

- Dielectric constant of 2.2 with a tight tolerance of 0.04 at 10 GHz/23°C.
- Ultra-low loss tangent of 0.001 at 10 GHz.
- Temperature coefficient of dielectric constant (TCDk) of -142 ppm/°C.
- Moisture absorption rate of 0.08%.
- Coefficient of thermal expansion (CTE) in the X-axis of 25 ppm/°C, Y-axis of 34 ppm/°C, and Z-axis of 240 ppm/°C.


Key Benefits:

- Superior signal integrity due to the low loss tangent.
- Diversified size options and cost savings.
- Excellent resistance to irradiation and low exhaust.
- Ready for commercialization, mass production, and offers high cost performance.


PCB Specifications:

This RF PCB is a 2-layer rigid PCB with the following stackup:

- Copper Layer 1: 35 μm
- F4BM220: 1.524 mm (60 mil)
- Copper Layer 2: 35 μm


PCB Material: Fibre glass coated PTFE
Code: F4BM-1/2 (family series)
Dielectric constant: 2.2, 2.55, 2.65,
  3.0 and 3.5
Layer count: 1 Layer, 2 Layers and multi-layer
Copper weight: 0.5oz (17 µm), 1oz (35µm), 2oz (70µm), 3oz (105µm)
PCB thickness: 0.25mm, 0.5mm, 0.8mm, 1.0mm, 1.5mm, 2.0mm,3.0mm, 4.0mm, 5.0mm, 6.0mm, 8.0mm, 10.0mm, 12.0mm
PCB size: ≤400mm X 500mm
Solder mask: Green, Black, Blue, Yellow, Red etc.
Surface finish: Bare copper, HASL, ENIG, Silver, OSP,etc.


To meet the demands of RF applications, this PCB has a board dimension of 392mm x 256mm (1 piece) with a tolerance of +/- 0.15mm. It supports a minimum trace/space of 7/6 mils and a minimum hole size of 0.3mm. This PCB has a finished board thickness of 1.6mm and a finished copper weight of 2oz (2.8 mils) for the outer layers. The via plating thickness is 20 μm. It features an immersion gold surface finish and does not include top or bottom silkscreen or solder mask. To ensure quality, every PCB undergoes a 100% electrical test before shipment.



This PCB is specifically designed for high-frequency applications, making it ideal for various RF systems, including microwave, radar, and satellite communications. It is well-suited for use in phase shifters, passive components, power dividers, couplers, combiners, feed networks, phased array antennas, and base station antennas.


Experience exceptional electrical performance and reliability with the F4BM220 RF PCB. Its innovative design, low loss, and enhanced stability make it the perfect choice for demanding RF applications in a wide range of industries.


60mil F4BM220 High Frequency PCB Double Sided Immersion Gold Circuit 0

Contact Details
Bicheng Electronics Technology Co., Ltd

Contact Person: Ms. Ivy Deng

Tel: 86-755-27374946

Fax: 86-755-27374848

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