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Rigid Flex PCB Manufacturing
We bond rigid FR4/PI layers and flexible PI films into one single multilayer board. The rigid areas carry high-pin-count parts; the flex arms fold in 3-D space—no connectors, no cables, one continuous interconnect.
- Up to 20 layers total
- Max panel size: 800×540 mm
- Minimum line width/line spacing for prototype: 1.5mil/1.5mil
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Our Rigid-Flex PCB Capabilities
Zintilon closes the gap between concept and creation in rigid-flex PCB manufacturing. From first-turn prototypes to high-reliability production runs, our advanced manufacturing network and deep engineering know-how deliver speed and unwavering quality—so your rigid-flex designs fold, fit, and function exactly as you imagined.
Rigid Flex PCB Materials
Pick the stack-up that matches your temperature → frequency → thermal → cost targets.
| Rigid Side (R) | Flex Side (F) | Bond-Ply | Key Features | Typical Apps |
| FR4 Tg 130–150 °C | PI 25 µm + RA copper | Acrylic (1–2 mil) | Low cost, 100 k bends, 260 °C solder | Phone hinge, keyboard tail |
| High-Tg FR4 >170 °C | PI 25 µm + RA copper | Low-flow epoxy | Lead-free 260 °C, anti-delam | Automotive ECU, industrial |
| Rogers RO4350B | LCP 25 µm + RA copper | No-flow, heat-press | Df ≤0.004@10 GHz, stable Dk | 5G mmWave, 77 GHz radar |
| PI laminate Tg≥250 °C | PI 25 µm + RA copper | PI hot-melt | All-PI, matched CTE, 300 °C | Aero engine bay, medical endoscope |
| Al-MCPCB 1–3 mm | PI 12.5 µm + RA copper | Thermally-conductive epoxy 1–5 W/m·K | Vert. thermal 1–5 W/m·K, 2 kV | LED bar, auto power module |
| Cu-MCPCB 0.5–3 mm | PI 12.5 µm + RA copper | Ag-sinter paste | 380 W/m·K, 300 A current | Laser diode, 5G AAU PA |
| Modified low-CTE PI | PI 25 µm + RA copper | Low-flow epoxy | CTE 15–20 ppm, –55~125 °C cycles | Auto BMS, mil high-rel |
Rigid-Flex PCB Capabilities
| Process Parameter | Sample | Batch |
| Layer Count | 20L | 16L |
| Panel Size | 800 mm × 540 mm | 400 mm × 540 mm |
| Finished Board Thickness | 0.25-5.0 mm | 0.25-3.2 mm |
| Minimum Line Width/Spacing | 1.5 mil / 1.5 mil | 2 mil / 2 mil |
| Minimum Hole-to-Line Spacing | 4 mil | 5 mil |
| Copper Thickness | 1/3 oz – 3 oz | 1/3 oz – 2 oz |
| Layer-to-Layer Alignment Accuracy | 0.8 mil | 1 mil |
| Minimum Through-Hole Diameter | 0.075 mm | 0.1 mm |
| Minimum Blind-Hole Diameter | 0.05 mm | 0.05 mm |
| Maximum Aspect Ratio | 16:1 | 12:1 |
| Etching Tolerance | ±10% / ±0.8 mil | ±10% / ±1 mil |
| Minimum Solder Mask Bridge | 2 mil | 3 mil |
| Impedance Control Tolerance | ±5% | ±7% |
| Surface Finishing Process | ENIG, E-Gold, HASL, Ni-Pd-Au, Thick E-Gold, ImSn, ImAg, OSP | ENIG, E-Gold, HA |
Why Choose Our Rigid-Flex PCB Services?
One-on-One Quotation
Simply upload your .gbr file to receive a quotation feedback within 24 hours. Our professional engineers will analyze your design to avoid misunderstandings, actively communicate with you, and provide a reasonable price.
High-Quality Production
We maintain a rigorous and responsible attitude toward materials, processes, surface treatments, A.O.I, and flying probe testing, ensuring consistent high quality from prototype manufacturing to mass production.
Fast Delivery
Equipped with advanced machinery and a professional engineering team to ensure fast delivery. We prioritize orders based on requirements and complexity. Customized delivery solution is also available to tailored to your needs.
Instant Communication
For your benefit, we provide full-cycle technical support for each customer from quotation to delivery. We will respond quickly to any questions until you confirm satisfactory rigid-flex PCBs.
Rigid Flex PCB Standards
Zintilon ensures quality through our Rigid PCB design and manufacturing standards from design to delivery by follow up IPC standards (IPC-2221C, IPC-6012E) to ensure manufacturability and reliability.
Stiffeners & Mechanical Support
Spec
Arc corners R
≥0.5 mm; teardrop width changes
Flex zone & rigid islands
No BGA/QFN in flex zone; high-pin parts on rigid islands
Laser micro-vias
50–100 µm, buried in rigid areas; avoid in bends
Shielding & High-Speed
≥10 GHz: LCP flex + immersion Ag/ENEPIG, traces perpendicular to bend
EMI shield
0.012 mm PI conductive adhesive, skip bend zones
Connectors/keypads
FR4 or PI stiffener 0.2–0.5 mm, add copper ring around screw holes
Dynamic zone
avoid stiffener; if needed, PI 0.1 mm and keep away from crease
Rigid Flex PCB Guidelines
Ensure precise tolerances, select appropriate materials, maintain clear CAD designs, and follow IPC for best results. Zintilon delivers accuracy, quality, and consistency in every PCB prototype.
Application
Min Bend Radius
Layer Limit
Copper Position
Static fold-once
Min Bend Radius 6× board thickness
Layer Limit ≤2 L
Copper Position Any
Dynamic repeated
Min Bend Radius 31× board thickness
Layer Limit ≤2 L
Copper Position Neutral axis
High-cycle
Min Bend Radius ≥50× board thickness
Layer Limit 1 L
Copper Position Neutral axis
Our Rigid Flex PCB Services for Various Industrial Applications
From foldable phone hinges on aluminum cores to copper-cored BMS harnesses in electric vehicles, from PTFE 5G mmWave boards to PI implants in the human body, from high-Tg industrial workhorses to full-temp ceramic birds in aerospace—rigid-flex PCBs carry the load where rigidity is needed, bend where space is tight, route in 3-D, cut weight in half, and never quit.
Rigid Flex PCB FAQs
Project lead time and cost depend on its complexity. Zintilon will spare no effort to provide the most competitive prices and the fastest delivery time.
We understand that clients may need to make some adjustments after receiving the sample. Minor modifications can be done free of charge. However, if the modifications are substantial, we will need to reassess the price and delivery time.
We accept T/T and PayPal payments.
Got any more questions?
Ultimate Guide
to Rigid Flex PCB
to Rigid Flex PCB
Rigid Flex PCB Manufacturing
Various and Robust Rigid Flex PCB Services
Prototype
Prototyping
From Gerber files to circuit boards, our professional engineering team provides you with the highest quality rigid-flex PCB manufacturing services. We meticulously control every detail of the process, including drilling, electroplating, and AOI, ensuring precise control over trace spacing, thickness, and panel dimensions. We are committed to providing you with the most reliable rigid-flex PCBs.
- Complete production line
- Professional engineering support
- 10+ years‘ manufacturing experience
Production
Production
We have our own production lines and a robust manufacturing network. From rigid-flex PCB design, engineering, and manufacturing, we have sufficient capacity to provide you with professional and fast delivery services, whether for small or large batches. We spare no effort in providing consistent mass production services for your products.
- Strong supply chain team
- Competitive pricing
- One-stop service from design to delivery
Let’s Build Something Great, Together
