F4BM255 Wangling F4B DK2.55 PTFE Glass Cloth ED Copper Foil Copper Clad Laminate

F4BM255 Wangling F4B DK2.55 PTFE Glass Cloth ED Copper Foil Copper Clad Laminate

Product Brief

Wangling F4BM255 is a high-performance PTFE glass cloth copper clad laminate independently developed and manufactured by Taizhou Wangling Insulation Material Factory. It is formulated and pressed through sophisticated processes with high-quality glass fiber cloth, polytetrafluoroethylene (PTFE) resin and PTFE film as the core raw materials. This Wangling laminate optimizes the proportion of PTFE and glass fiber cloth to achieve a targeted dielectric constant of 2.55, striking a perfect balance between low dielectric loss and excellent dimensional stability.

Equipped with ED copper foil, F4B DK2.55 laminate features outstanding electrical insulation, high peel strength, and stable thermal performance, and is not required to meet PIM index requirements in application scenarios. It has been upgraded on the basis of traditional F4B grade laminates, with a larger dielectric constant range, lower medium loss, higher insulation resistance and more reliable overall performance, which can fully replace imported similar products and provide cost-effective solutions for microwave, radio frequency and other high-frequency electronic component manufacturing.

Core Features

1)Fixed typical dielectric constant of 2.55 (10GHz) with a tight tolerance of±0.05, ensuring stable electrical performance

2)Ultra-low loss factor, 0.0013 at 10GHz and 0.0018 at 20GHz, suitable for high-frequency signal transmission

3)High peel strength (>1.8N/mm for 1OZ copper foil), firm combination of copper foil and substrate, anti-peeling

4)Excellent thermal stability, long-term service temperature range of -55℃~ +260℃, no delamination under thermal stress test (260℃, 10s, 3 times)

5)Low water absorption (≤0.08%), anti-radiation and low outgassing, adaptable to harsh working environments

6)UL94 V-0 flame retardant grade, meeting industrial safety and environmental protection standards

7)Diversified customizable sizes and thicknesses, reducing material waste and production costs for customers

Typical Application Fields

• Microwave, RF and radar communication equipment
• Phase shifters and various passive electronic components
• Power dividers, couplers and combiners
• Feeding networks and phased array antennas
• Satellite communication and base station antenna systems

Technical Parameters of F4BM255

Customization & Specification Parameters

1. Copper Foil Specification (Exclusive ED Copper Foil for F4BM255)

2. Plate Size Specification

Regular Size (mm)

460×610、500×600、850×1200、914×1220、1000×1200

Customizable Irregular Size (mm)

300×250、350×380、500×500、840×840、1000×1500

Note: When the plate thickness is≥4.0mm or≤0.2mm, the maximum size cannot exceed 500×610mm.

3. Thickness & Tolerance Specification

The following are conventional thicknesses (including copper total thickness/medium thickness, customizable), and the tolerance is matched according to the thickness: