2-Layer F4BM220 PCB 35um Copper Thickness Immersion Gold

This 2-layer rigid double-sided PCB is specifically engineered for high-performance microwave, RF, and radar systems, utilizing Wangling F4BM220 laminate. It harnesses the material's superior electrical properties—low dielectric loss, high insulation resistance, and excellent performance stability—to satisfy the stringent requirements of high-frequency signal transmission.

PCB Specification

PCB Stack-up

F4BM220 Material Introduction

Wangling's F4BM220 laminates are made by scientifically formulating and strictly pressing a combination of fiberglass cloth, polytetrafluoroethylene resin, and polytetrafluoroethylene film. Its electrical performance is improved compared to F4B220, mainly due to lower dielectric loss, increased insulation resistance, and improved stability. It can replace similar foreign products.

F4BM220 and F4BME220 have the same dielectric layer but different copper foil combinations: F4BM220 is paired with ED copper foil, suitable for applications without PIM requirements; F4BME220 is paired with reverse-treated foil (RTF) copper foil, offering excellent PIM performance, more precise line control, and lower conductor loss. By adjusting the ratio between polytetrafluoroethylene and fiberglass cloth, F4BM220 and F4BME220 achieve precise control of the dielectric constant, providing low loss and enhanced dimensional stability. A higher dielectric constant corresponds to a higher proportion of fiberglass, resulting in better dimensional stability, lower thermal expansion coefficient, improved temperature drift, and a slight increase in dielectric loss.

Key Material Features

Core Benefits

Precise Dielectric Constant Control: Achieved by adjusting the ratio of polytetrafluoroethylene and fiberglass cloth, balancing low loss and dimensional stability.

Enhanced Stability: Improved insulation resistance and stable performance compared to F4B220, with reliable operation in various environments.

Low Environmental Sensitivity: Moisture absorption ≤0.08%, minimizing performance degradation in humid conditions.

Cost-Effective Alternative: Can replace similar foreign products, offering excellent performance at a competitive cost.

Safe and Reliable: UL-94 V0 flammability rating meets strict safety standards for electronic applications.

Quality Standard & Availability

Quality Standard: Complies with IPC-Class-2, ensuring consistent and reliable performance via strict manufacturing requirements.

Availability: Globally supplied with timely delivery and efficient after-sales support.

Typical Applications

-Microwave, RF, and Radar Systems

-Phase Shifters

-Power Dividers, Couplers, Combiners

-Feed Networks

-Phase-Sensitive Antennas, Phased Array Antennas

-Satellite Communications

-Base Station Antennas

Summary

The 2-layer rigid PCB with Wangling F4BM220 material is a high-performance solution tailored for microwave, RF, and radar applications. By combining the superior electrical performance (low dielectric loss, high insulation resistance) of F4BM220 with immersion gold surface finish and compliance with IPC-Class-2 standards, it effectively ensures stable high-frequency signal transmission and reliable operation. Its global availability and ability to replace similar foreign products make it a cost-effective and trusted choice for satellite communications, base station antennas, and various precision RF systems.