Descrizione
Topfast Professional 4-Layer Flexible PCB
In today’s highly integrated electronic devices, 4-layer flexible PCBs have become the preferred solution for high-end industrial, medical, automotive, and consumer electronics due to their superior wiring density, dynamic bending capability, and exceptional reliability. With 17 years of experience, Topfast specializes in the design, manufacturing, and assembly of 4-layer flexible PCBs, delivering high-performance and ultra-reliable flexible circuits for demanding applications.
Key Advantages of Topfast’s 4-Layer Flexible PCB
1. High-Density Wiring for Complex Circuits
Topfast’s 4-layer PCB flessibili utilize a precision stack-up design, supporting 4-layer copper trace routing for higher wiring density, making them ideal for complex circuit designs. Whether for high-speed signal transmission, impedance control, or multi-layer shielding, our flexible PCBs deliver flawless performance.
2. Superior Flexibility for Dynamic Bending Environments
Made with high-grade polyimide (PI) material, our 4-layer flexible PCBs offer excellent bending performance, withstanding over 500,000 dynamic flex cycles. They are perfect for wearable devices, foldable smartphones, robotic joints, and other high-frequency bending applications.
3. Tight Impedance Control for Signal Integrity
Topfast’s 4-layer flexible PCBs feature precision impedance-matching designs, with tolerances controlled within ±5%, making them ideal for high-speed digital signals (USB 3.0, HDMI) and high-frequency RF applications (5G, Wi-Fi 6) to ensure stable, interference-free transmission.
4. Multi-Layer Shielding for EMI/EMC Protection
With optimized stack-up configurations (e.g., symmetrical ground + power plane design), our 4-layer flexible PCBs provide outstanding EMI/RFI shielding, suitable for automotive electronics, medical devices, and industrial control systems with strict electromagnetic compatibility requirements.
5. High-Reliability Manufacturing Process
30μm laser drilling for microvia precision
100% AOI/ICT testing to eliminate defects
IPC-6013 certified, meeting the industry’s highest standards
72-hour rapid prototyping to accelerate development
Typical Applications of Topfast’s 4-Layer Flexible PCB
Dispositivi medici: Endoscopes, wearable health monitors, implantable sensors
Elettronica automobilistica: In-vehicle displays, ADAS sensors, LiDAR
Elettronica di consumo: Foldable smartphones, AR/VR glasses, smartwatches
Controllo industriale: Robotic flexible interconnects, HMI panels, motion controllers
Aeronautica & difesa: Avionics communication systems, drone flight control
Why Choose Topfast?
17+ years of industry expertise in high-precision PCB manufacturing
20,000㎡ modern factory with laser drilling, VCP plating, and advanced equipment
Strict quality control with 100% flying probe testing & X-ray inspection
Fast response—72-hour prototyping & small-batch production support
Cost optimization—15%-30% material savings through optimized stack-up design
conclusioni
Topfast’s 4-layer flexible PCBs offer high-density routing, exceptional flexibility, and stringent manufacturing standards, making them the ideal choice for advanced electronics in medical, automotive, consumer, and industrial applications. We provide high-reliability, high-performance flexible circuit solutions tailored to your needs. Contact us today for your custom 4-layer flexible PCB solution!