| |
Wangling F4BM255 DK2.55 Df0.0013 (0.1-12.0mm) ED 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 suitable substitutes for similar international products. F4BM255 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; Dk 2.55 with customizable options available
Low dissipation factor (Df 0.0013 @ 10GHz, 0.0018 @ 20GHz)
Good dimensional stability and enhanced size control
Radiation resistance and low outgassing
Commercial, high-volume, cost-effective production
UL 94 V-0 flammability rating
Long-term operating temperature: -55°C to +260°C
Very low moisture absorption (≤0.08%)
Typical Properties: F4BM255
| Properties |
Test Conditions |
Unit |
F4BM255 |
| Electrical Properties | | | |
| Dielectric Constant (Typical) | 10 GHz | – | 2.55 |
| Dielectric Constant Tolerance | – | – | ±0.05 |
| Dissipation Factor (Typical) | 10 GHz | – | 0.0013 |
| 20 GHz | – | 0.0018 |
| Temperature Coefficient of Dk | -55°C to 150°C | ppm/°C | -110 |
| 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 | >25 |
| Breakdown Voltage (XY-direction) | 5 kW, 500 V/s | kV | >34 |
| Thermal & Mechanical Properties | | | |
| CTE | XY-direction, -55°C to 288°C | ppm/°C | 16~21 |
| Z-direction, -55°C to 288°C | ppm/°C | 173 |
| Thermal Stress | 260°C, 10s, 3 cycles | – | No Delamination |
| Water Absorption | 20±2°C, 24 hours | % | ≤0.08 |
| Density | Room Temperature | g/cm³ | 2.25 |
| Long-term Operating Temperature | – | °C | -55 to +260 |
| Thermal Conductivity | Z-direction | W/(m·K) | 0.33 |
| 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.
F4BM Series with Metal Core (Aluminum/Copper Base):
Models: F4BM*-AL (Aluminum base), F4BM*-CU (Copper base)
Serves for shielding or heat dissipation
Example: F4BM255-AL represents F4BM255 with aluminum base; F4BM255-CU represents F4BM255 with copper base
Standard sizes available: 460×610 mm, 460×305 mm; other sizes upon request
|
|
.jpg)
