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Wangling F4BME220 DK2.20 Df0.001 PIM ≤-159dBc (0.1-12.0mm) Copper Clad Laminate
Brief Introduction
F4BME220 is a PTFE fiberglass copper-clad laminate from Taizhou Wangling Insulation Material Factory. Composed of fiberglass cloth, PTFE resin, and film, it offers improved electrical performance over standard F4B, including a wider DK range, lower loss, higher insulation resistance, and greater stability. It serves as a domestic alternative to similar imported products. F4BME220 utilizes reverse RTF copper foil, providing excellent PIM performance, precise circuit control, and lower conductor loss, distinguishing it from the ED copper foil used in F4BM.
Technical Features & Benefits
- DK: 2.17～3.0 optional, DK 2.20 (Customizable) – Wide range of dielectric constants available to match design requirements.
- Low loss – Dissipation factor of 0.001 at 10 GHz ensures minimal signal attenuation.
- Excellent PIM performance (with RTF foil) – PIM ≤ -159 dBc for superior intermodulation distortion control.
- Diverse sizes, cost-effective – Multiple panel sizes available with high cost-performance ratio.
- Radiation resistant, low outgassing – Suitable for aerospace and high-reliability applications.
- Commercial availability, high volume, high cost-performance – Readily available for mass production with excellent value.
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Typical Properties: F4BME 220
| Property |
Test Condition |
Unit |
Value |
| Dielectric Constant (Typ.) | 10GHz | – | 2.20 |
| Dielectric Constant Tolerance | – | – | ±0.04 |
| Dissipation Factor (Typ.) | 10GHz | – | 0.001 |
| 20GHz | – | 0.0014 |
| Dielectric Constant Temp. Coeff. | -55℃～150℃ | ppm/℃ | -142 |
| Peel Strength | 1 OZ F4BME | N/mm | >1.6 |
| Volume Resistivity | Normal | MΩ·cm | ≥6×10⁶ |
| Surface Resistance | Normal | MΩ | ≥1×10⁶ |
| Electric Strength (Z) | 5KV, 500V/s | KV/mm | >23 |
| Breakdown Voltage (XY) | 5KW, 500V/s | KV | >30 |
| CTE (XY) | -55℃～288℃ | ppm/℃ | 25~34 |
| CTE (Z) | -55℃～288℃ | ppm/℃ | 240 |
| Thermal Stress | 260℃, 10s, 3 times | – | No delamination |
| Water Absorption | 20±2℃, 24h | % | ≤0.08 |
| Density | Room Temp. | g/cm³ | 2.18 |
| Long-term Operating Temp. | - | ℃ | -55～+260 |
| Thermal Conductivity (Z) | Z-direction | W/(m·K) | 0.24 |
| PIM Value | For F4BME only | dBc | ≤-159 |
| Flammability | – | UL-94 | V-0 |
| Material Composition | – | – | PTFE, Fiberglass Cloth, Reverse RTF Copper Foil |
Application Areas
- Microwave, RF, Radar – High-frequency systems requiring stable performance.
- Phase Shifters, Passive Components – Precision RF control elements.
- Power Dividers, Couplers, Combiners – Signal distribution networks.
- Feed Networks, Phased Array Antennas – Advanced antenna systems.
- Satellite Communication, Base Station Antennas – Low PIM requirements.
Available Configurations
- Copper Foil: RTF copper, various weights available.
- Standard Sizes: 460×610 mm, 500×600 mm, 914×1220 mm, etc.
- Thickness Options: 0.1 mm to 12.0 mm with specified tolerances.
- Metal Substrate Options: Available with aluminum or copper backing.
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