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Wangling F4BM233 DK2.33 Df0.0011 (0.1-12.0mm) PTFE Glass Fabric Copper Clad Laminate
Brief Introduction
Wangling F4BM series are PTFE glass fabric copper-clad laminates made from PTFE resin, PTFE film, and woven glass fabric. They offer improved electrical performance over standard F4B, including a wider dielectric constant range, lower loss, higher insulation resistance, and better stability, making them a suitable substitute for similar international products. F4BM233 uses standard ED copper foil and is ideal for applications without PIM requirements.
Technical Features & Benefits
Selectable Dielectric Constant (Dk) from 2.17 to 3.0; customizable Dk available.
Low dissipation factor (low loss).
Good dimensional stability and enhanced size control.
Radiation resistance and low outgassing.
Commercial, high-volume, cost-effective production.
UL 94 V-0 flammability rating.
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Typical Properties: F4BM233
| Properties |
Test Conditions |
Unit |
F4BM233 |
| Electrical Properties | | | |
| Dielectric Constant (Typical) | 10 GHz | - | 2.33 |
| Dielectric Constant Tolerance | / | - | ±0.04 |
| Dissipation Factor (Typical) | 10 GHz | - | 0.0011 |
| 20 GHz | - | 0.0015 |
| Temperature Coefficient of Dk | -55°C to 150°C | ppm/°C | -130 |
| Peel Strength | 1 oz. F4BM | N/mm | >1.8 |
| Volume Resistivity | Normal Condition | MΩ·cm | ≥6×10⁶ |
| Surface Resistance | Normal Condition | MΩ | ≥1×10⁶ |
| Dielectric Strength (Z-direction) | 5 kW, 500 V/s | kV/mm | >23 |
| Breakdown Voltage (XY-direction) | 5 kW, 500 V/s | kV | >32 |
| Thermal & Mechanical Properties | | | |
| CTE | XY-direction, -55°C to 288°C | ppm/°C | 22~30 |
| Z-direction, -55°C to 288°C | ppm/°C | 205 |
| Thermal Stress | 260°C, 10s, 3 cycles | - | No Delamination |
| Water Absorption | 20±2°C, 24 hours | % | ≤0.08 |
| Density | Room Temperature | g/cm³ | 2.20 |
| Long-term Operating Temperature | High/Low Temp Chamber | °C | -55 to +260 |
| Thermal Conductivity | Z-direction | W/(m·K) | 0.28 |
| Flammability Rating | / | UL-94 | V-0 |
| Material Composition | / | / | PTFE, Glass Fiber Cloth; F4BM uses ED 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 Options for F4BM: ED Copper Foil. Available thicknesses: 0.5 oz (0.018mm), 1 oz (0.035mm), 1.5 oz (0.05mm), 2 oz (0.07mm).
Standard Panel Sizes Available:
460 × 610 mm
500 × 600 mm
850 × 1200 mm
914 × 1220 mm
1000 × 1200 mm
Available Thicknesses & Tolerances (Conventional):
Thickness (mm): 0.1 (core), 0.127 (core), 0.2, 0.25, 0.5, 0.508, 0.762, 0.8, 1.0, 1.5, 1.524, 1.575, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0, 8.0, 10.0, 12.0.
Corresponding tolerances range from ±0.01mm to ±0.20mm.
Note: For Dk ≤ 2.65, minimum core thickness is 0.1mm. For Dk 2.7–3.0, minimum core thickness is 0.2mm.
F4BM Series with Metal Core (Aluminum/Copper Base):
Models: F4BM*-AL (Aluminum base), F4BM*-CU (Copper base).
Serves for shielding or heat dissipation.
Example: F4BM233-AL represents F4BM233 with an aluminum base.
Standard sizes available: 460×610 mm, 460×305 mm. Other sizes upon request.
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