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Multi-Layer Flexible PCB
Process Parameter
Designed to overcome the layout constraints of rigid PCBs and single-layer flex circuits, Multi-Layer Flexible PCB provides unmatched design freedom and space efficiency for modern miniaturized electronics. Its thin, lightweight construction (typically 0.1–0.5mm total thickness) and ability to conform to 3D shapes enable seamless integration into curved, tight, or moving assemblies, reducing overall device size and weight by up to 50% compared to rigid multi-layer solutions.
Supporting customizable layer configurations, trace geometries, and surface finishes (ENIG, immersion gold, or conductive ink), it adapts to diverse functional requirements—from low-power signal routing to high-speed data transmission. The multi-layer design eliminates bulky connectors and simplifies assembly, lowering production costs and improving system reliability. Widely used in smartphones, foldable displays, industrial robotics, medical diagnostic devices, and IoT sensors, it balances flexibility, performance, and cost-effectiveness for next-generation compact electronics.
| Item | Flexible pcb |
| Max Layer | 8L |
| Inner Layer Min Trace/Space | 3/3mil |
| Out Layer Min Trace/Space | 3.5/4mil |
| Inner Layer Max Copper | 2oz |
| Out Layer Max Copper | 2oz |
| Min Mechanical Drilling | 0.1mm |
| Min Laser Drilling | 0.1mm |
| Aspect Ratio(Mechanical Drilling) | 10:01 |
| Aspect Ratio(Laser Drilling) | / |
| Press Fit Hole Ttolerance | ±0.05mm |
| PTH Tolerance | ±0.075mm |
| NPTH Tolerance | ±0.05mm |
| Countersink Tolerance | ±0.15mm |
| Board Thickness | 0.1-0.5mm |
| Board Thickness Tolerance(＜1.0mm) | ±0.05mm |
| Board Thickness Tolerance(≥1.0mm) | / |
| Impedance Tolerance | Single-Ended：±5Ω(≤50Ω)，±10%(＞50Ω) |
| Differential：±5Ω(≤50Ω)，±10%(＞50Ω) | |
| Min Board Size | 5*10mm |
| Max Board Size | 9*14inch |
| Contour Tolerance | ±0.05mm |
| Min BGA | 7mil |
| Min SMT | 7*10mil |
| Surface Treatment | ENIG,Gold Finger,Immersion Silver,Immersion Tin,HASL(LF),OSP,ENEPIG,Flash Gold;Hard gold plating |
| Solder Mask | Green Solder Mask/Black PI/Yellow PI |
| Min Solder Mask Clearance | 3mil |
| Min Solder Mask Dam | 8mil |
| Legend | White,Black,Red,Yellow |
| Min Legend Width/Height | 4/23mil |
| Strain Fillet Width | 1.5±0.5mm |
| Bow & Twist | / |
Areas of Application
Consumer Electronics
Aerospace
Telecommunications
Military Defense
Automotive Industry
Industrial Control
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One-stop PCB PCBA service
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Static electricity bag+EV pearl cotton
Anti-static bubble bags + carton slot
Carton slot + bubble foam
Anti-static kraft bubble bags
Shipping Way
For small packages, we advise to choose by express (such as DHL, UPS, FedEx, and EMS by door to door service!)is the quickest way.
For heavy packages, the best solution is by seafreight.
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