PTFE Fiberglass PCB F4BME220 for Electronics & PCB Board Design
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)
Low loss
Excellent PIM performance (with RTF foil)
Diverse sizes, cost-effective
Radiation resistant, low outgassing
Commercial availability, high volume, high cost-performance
.jpg)
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
Phase Shifters, Passive Components
Power Dividers, Couplers, Combiners
Feed Networks, Phased Array Antennas
Satellite Communication, Base Station Antennas
Available Configurations:
Copper Foil: ED 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
Why Choose Us?
1. Engineering design prevents problems from occurring in pre-production;
2. ISO9001, ISO14001, ISO13485, UL certified manufacturing factory;
3. AOI inspection;
4. Delivery on time higher than 98% on-time-delivery rate;
5. 16000m2 workshop;
6. 30000m2 output capability per month;
7. 8000 types of PCB's per month;
8. Quick CADCAM checking and free PCB quotation;
9. More than 18+ years of PCB experience;
10. Customer complaint rate: <1%
