| Customization: | Available |
|---|---|
| Type: | Rigid Circuit Board |
| Dielectric: | PTFE (Polytetrafluoroethylene) + Fiberglass Cloth |
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(PCB's are custom-made products, the picture and parameters shown are just for reference)
Introduction
The F4BME High Frequency PCB series is constructed from a carefully formulated blend of fiberglass cloth, polytetrafluoroethylene (PTFE) resin, and PTFE film. This design enhances electrical performance compared to the F4B series, featuring a wider range of dielectric constants, lower dielectric loss, increased insulation resistance, and improved stability, making it a viable alternative to similar foreign products.
The F4BME and F4BM variants have the same dielectric layer but differ in copper foil combinations: F4BME uses reverse-treated foil (RTF) copper foil, providing excellent Passive Intermodulation (PIM) performance, precise line control, and reduced conductor loss. In contrast, F4BM utilizes ED copper foil for applications without PIM requirements.
By adjusting the ratio of PTFE to fiberglass cloth, both variants achieve precise control of the dielectric constant, ensuring low loss and enhanced dimensional stability. A higher dielectric constant is associated with a greater proportion of fiberglass, leading to improved dimensional stability and reduced thermal expansion.
Features & Benefits
Customizable dielectric constant (DK) options: 2.17 to 3.0
Low loss characteristics
F4BME with RTF copper foil for excellent PIM performance
Cost-effective and diverse size options
Radiation resistance and low outgassing
Commercially available with large-scale production
Laminate Models and Data Sheet
| Product Technical Parameters | Product Model & Data Sheet | |||||||||||
| Product Features | Test Conditions | Unit | F4BM217 | F4BM220 | F4BM233 | F4BM245 | F4BM255 | F4BM265 | F4BM275 | F4BM294 | F4BM300 | |
| Dielectric Constant (Typical) | 10GHz | / | 2.17 | 2.2 | 2.33 | 2.45 | 2.55 | 2.65 | 2.75 | 2.94 | 3.0 | |
| Dielectric Constant Tolerance | / | / | ±0.04 | ±0.04 | ±0.04 | ±0.05 | ±0.05 | ±0.05 | ±0.05 | ±0.06 | ±0.06 | |
| Loss Tangent (Typical) | 10GHz | / | 0.001 | 0.001 | 0.0011 | 0.0012 | 0.0013 | 0.0013 | 0.0015 | 0.0016 | 0.0017 | |
| 20GHz | / | 0.0014 | 0.0014 | 0.0015 | 0.0017 | 0.0018 | 0.0019 | 0.0021 | 0.0023 | 0.0025 | ||
| Dielectric Constant Temperature Coefficient | -55ºC~150ºC | PPM/ºC | -150 | -142 | -130 | -120 | -110 | -100 | -92 | -85 | -80 | |
| Peel Strength | 1 OZ F4BM | N/mm | >1.8 | >1.8 | >1.8 | >1.8 | >1.8 | >1.8 | >1.8 | >1.8 | >1.8 | |
| 1 OZ F4BME | N/mm | >1.6 | >1.6 | >1.6 | >1.6 | >1.6 | >1.6 | >1.6 | >1.6 | >1.6 | ||
| Volume Resistivity | Standard Condition | MΩ.cm | ≥6×10^6 | ≥6×10^6 | ≥6×10^6 | ≥6×10^6 | ≥6×10^6 | ≥6×10^6 | ≥6×10^6 | ≥6×10^6 | ≥6×10^6 | |
| Surface Resistivity | Standard Condition | MΩ | ≥1×10^6 | ≥1×10^6 | ≥1×10^6 | ≥1×10^6 | ≥1×10^6 | ≥1×10^6 | ≥1×10^6 | ≥1×10^6 | ≥1×10^6 | |
| Electrical Strength (Z direction) | 5KW,500V/s | KV/mm | >23 | >23 | >23 | >25 | >25 | >25 | >28 | >30 | >30 | |
| Breakdown Voltage (XY direction) | 5KW,500V/s | KV | >30 | >30 | >32 | >32 | >34 | >34 | >35 | >36 | >36 | |
| Coefficientof Thermal Expansion | XY direction | -55 º~288ºC | ppm/ºC | 25, 34 | 25, 34 | 22, 30 | 20, 25 | 16, 21 | 14, 17 | 14, 16 | 12, 15 | 12, 15 |
| Z direction | -55 º~288ºC | ppm/ºC | 240 | 240 | 205 | 187 | 173 | 142 | 112 | 98 | 95 | |
| Thermal Stress | 260ºC, 10s,3 times | No delamination | No delamination | No delamination | No delamination | No delamination | No delamination | No delamination | No delamination | No delamination | ||
| Water Absorption | 20±2ºC, 24 hours | % | ≤0.08 | ≤0.08 | ≤0.08 | ≤0.08 | ≤0.08 | ≤0.08 | ≤0.08 | ≤0.08 | ≤0.08 | |
| Density | Room Temperature | g/cm3 | 2.17 | 2.18 | 2.20 | 2.22 | 2.25 | 2.25 | 2.28 | 2.29 | 2.29 | |
| Long-Term Operating Temperature | High-Low Temperature Chamber | ºC | -55~+260 | -55~+260 | -55~+260 | -55~+260 | -55~+260 | -55~+260 | -55~+260 | -55~+260 | -55~+260 | |
| Thermal Conductivity | Z direction | W/(M.K) | 0.24 | 0.24 | 0.28 | 0.30 | 0.33 | 0.36 | 0.38 | 0.41 | 0.42 | |
| PIM | Only applicable to F4BME | dBc | ≤-159 | ≤-159 | ≤-159 | ≤-159 | ≤-159 | ≤-159 | ≤-159 | ≤-159 | ≤-159 | |
| Flammability | / | UL-94 | V-0 | V-0 | V-0 | V-0 | V-0 | V-0 | V-0 | V-0 | V-0 | |
| Material Composition | / | / | PTFE, Fiberglass Cloth F4BM paired with ED copper foil, F4BME paired with reverse-treated (RTF) copper foil. |
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Our PCB Capability (F4BME)
| PCB Capability (F4BME) | |||
| PCB Material: | PTFE glass fiber cloth copper clad laminates | ||
| Designation (F4BME ) | F4BME | DK (10GHz) | DF (10 GHz) |
| F4BME217 | 2.17±0.04 | 0.0010 | |
| F4BME220 | 2.20±0.04 | 0.0010 | |
| F4BME233 | 2.33±0.04 | 0.0011 | |
| F4BME245 | 2.45±0.05 | 0.0012 | |
| F4BME255 | 2.55±0.05 | 0.0013 | |
| F4BME265 | 2.65±0.05 | 0.0013 | |
| F4BME275 | 2.75±0.05 | 0.0015 | |
| F4BME294 | 2.94±0.06 | 0.0016 | |
| F4BME300 | 3.00±0.06 | 0.0017 | |
| Layer count: | Single Sided, Double Sided PCB, Multilayer PCB, Hybrid PCB | ||
| Copper weight: | 0.5oz (17 µm), 1oz (35µm), 2oz (70µm) | ||
| Dielectric thickness (or overall thickness) | 0.127mm (dielectric), 0.2mm, 0.25mm, 0.5mm, 0.508mm, 0.762mm, 0.8mm, 1.0mm, 1.5mm, 1.524mm, 1.575mm, 2.0mm, 2.5mm, 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, Immersion silver, Immersion tin, OSP, Pure gold, ENEPIG etc.. | ||
A PCB and Typical Applications
Displayed on the screen is a 2-layer copper high-frequency PCB with a low DK of 2.2, utilizing F4BME material and HASL surface finish on a 3.0mm substrate.
F4BME high-frequency PCB finds applications in microwave, RF, and radar systems, as well as in phase shifters, passive components, power dividers, couplers, combiners, feed networks, phased array antennas, satellite communications, and base station antennas.
Final - F4BME series aluminum-based/copper-based boards
These F4BME series of laminates can provide aluminum-based or copper-based materials, where one side of the dielectric layer is covered with copper foil, and the other side is covered with either aluminum-based material or copper-based , serving as shielding or heat dissipation purposes.
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