The 4L Controlled Impedance FPC Board delivers exceptional signal integrity and mechanical flexibility for modern, high-density electronic designs. Engineered specifically for complex devices where space is limited but data rates are high, this 4-layer flexible printed circuit manages high-speed signals without data loss or electromagnetic interference. By maintaining uniform electrical characteristics across all layers, it provides developers with a dependable interconnect system for critical system architectures.
Key Features
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Advanced Impedance Control: Precision-etched traces calibrated to 50Ω single-ended and 100Ω differential pairs ($\pm10\%$ tolerance) for optimized signal transmission.
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4-Layer Stackup: Multi-layer polyimide construction utilizing ultra-thin copper foils to maximize routing density while retaining flexibility.
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High-Reliability Materials: Base substrate made of premium polyimide (PI) film with excellent thermal stability and resistance to dynamic flexing.
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Surface Finish Options: Available with Electroless Nickel Immersion Gold (ENIG) for superior solderability and oxidation resistance.
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Fine Line Capability: Minimum trace width and spacing down to 0.075 mm to accommodate high-pin-count components and tight spacing layout requirements.
Applications
This multi-layer Flexible PCB is widely used in industries requiring compact, high-speed data links. Common applications include wearable medical diagnostics, high-definition display connections, automotive infotainment modules, aerospace telemetry, and compact consumer electronics like drones and smartphones.
Why Choose PCBSYNC
PCBSYNC is a professional PCB fabrication, PCBA, and EMS manufacturer delivering precision-built electronics for aerospace, medical, automotive, industrial, and smart energy applications. We handle everything from rapid prototyping to mass production — including rigid, flexible, and rigid-flex PCBs, full turnkey assembly, component sourcing, AOI and X-ray inspection, and OEM/ODM support. Reliable boards. Consistent quality. From prototype to production — PCBSYNC.
Request a Quote
Ready to integrate this high-speed flexible circuit into your next hardware project? Contact the PCBSYNC engineering team today to submit your Gerber files and receive a detailed technical review and production estimate.
