Understanding the stack-up structure of rigid-flex PCBs helps designers optimize signal routing, mechanical reliability, and space utilization in compact electronic systems. This enhances design efficiency and allows seamless integration between rigid and flexible sections. The diagram on the left illustrates a typical rigid-flex stack-up, showing how rigid areas (built with FR-4, prepreg, and copper layers) transition into the flex area, which features a polyimide core, copper layers, and protective coverlays.
Prototype
No MOQ for prototyping and we have special offer for business clients. Lead time fastest within 24 hours.
Mass Production
Being the long-term strategic supplier of many industry leaders, Asunny is your trustworthy PCB manufacturer. Our monthly capacity is 300,000 m².
Assembly
Our assembly service is available for both small-volume and large-volume production. Our featured service is Flex PCB assembly, with 100k pcs of daily production.
Product description
What is Rigid Flex PCB?
Rigid-Flex PCB combines rigid and flexible circuits into a single board. It uses rigid sections (like FR4) for stability and flexible polyimide layers for bending, enabling 3D layouts that replace multiple boards and connectors. Common in consumer electronics, medical devices, wearables, and automotive systems, it saves space, reduces weight, and boosts reliability in tight, high-stress environments. Rigid-Flex PCB minimizes failure points by eliminating cables and connectors, ideal for advanced electronics requiring durability, compactness, and adaptability.
Our long-term Partners
End Clients, EMS, OEM & ODM companies we are working with.
Asunny’s goal is to enhance our partners’ supply chain by establishing long-term relationship and striving to be the most reliable PCB supplier. In the past three decades, we have proven our ability to achieve this goal.
Product showcase
Featured Rigid Flex PCB manufactured by Asunny
Asunny Circuits offers advanced manufacturing capabilities for rigid-flex PCBs. We can manufacture up to 10 layers of Rigid Flex PCB and offer high level of customization in terms of design and technologies.
TWS earphone Rigid Flex PCB
Layer count: 6 layers
Application: TWS earbud mainboard
Tablet BMS Rigid Flex PCB
Layer count: 6 layers
Application:Battery Management and Interconnect RFPCB in a tablet battery pack
Smartphone Battery Protection Rigid Flex PCB
Layer count: 6 layers
Application: Smartphone battery interconnect and management FPCB
Smart Watch Battery Protection RIgid Flex PCB
Layer count: 6 layers
Application: Smartwatch battery protection and monitoring RFPCB
1st-order TWS RFPCB
Layer count: 6 layers
Application: Bluetooth TWS Earbuds Mainboard
TWS earphone Rigid Flex PCB
Layer count: 6 layers
Application: Main functional control board
Laptop fingerprint reader Rigid Flex PCB
Layer count: 4 layers
Application:Fingerprint sensor interconnect PCB
Smartphone Camera RIgid Flex PCB
Layer count: 8 layers
Application: Camera module interconnect and driver flex board
Rigid Flex PCB Manufacturing Capabilities
| Feature | Capability |
|---|---|
| Layer Count | Rigid Flex PCB: 2-10 layers |
| Major CCL Brand | Doosan, Thinflex, Shengyi, Taiyo, DongYi, any required |
| Min. Track/Spacing | 0.065 mm/0.065 mm |
| Minimum mechanical drill | 0.15mm |
| Minimum laser drill | 0.10mm standard, 0.075mm advanced |
| Finish copper (Flex Part) | 0.5-2oz |
| Finish copper (Rigid Part) | 1-4oz |
| Board Thickness(Rigid Flex PCB) | 0.25mm-0.6mm |
| Flex section thickness | 0.05mm to 2 mm |
| Aspect Ratio of Plated Hole (Max) | 8:1 |
| Hole Diameter Tolerance (PTH) | ±0.05mm |
| Hole Diameter Tolerance (NPTH) | ±0.05mm |
| Copper Thickness of PTH Wall | 10μm min or meet customer requirement |
| Design Line Width/Space of Inner Layer (Min) | 0.05/0.05mm |
| Design Line Width/Space of Outer Layer (Min) | 0.05/0.05mm |
| Solder Mask Bridge Width (Min) | 0.08mm |
| Solder Mask Alignment Tolerance | ±2mil (±0.05mm) |
| Coverlay Bridge Width (Min) | 8mil (0.2mm) |
| Coverlay Alignment Tolerance | ±6mil (±0.15mm) |
| Dimension Tolerance (Hole to Edge) | ±4mil (±0.1mm) |
| Test Capacity | PAD Size min (0.1mm), PAD Pitch min (0.4mm) |
| Stiffener Type | PI, FR4, Aluminium, Stainless Steel |
| Surface Treatment | HASL, ENIG, ENEPIG, Electrolytic Nickel Gold, Soft gold, Hard gold, Immersion silver and OSP, Immersion tin |
Why Choose Us
Why Choose Asunny For Rigid Flex PCB?
We have Rigid Flex PCB experience in various industries and applications including consumer electronics, telecommunications, automotive, and medical etc.
30 years of Experience
With our 30 years of industry experience, we have broad project experience with 300+ end clients.
Cutting-Edge Technology
We can manufacture HDI PCB up to 3rd-order and prototype to any layer. We can also offer PCB with SiP design.
Full-feature Manufacturer
We produce full-range of PCB and offer in-house assembly services. You can get all your projects produced and assembled one-stop.
24/7 Customer Support
We have service teams in both China and Europe. You will be able to reach out to us anytime through email, phone or Whatsapp.
How it works
PCB Order Process
With our streamlined process, we give any quotation within 24 hours and large batch production in 15 days
1. Submit your RFQ online or through email
Upload or send us your project details including Gerber files, BOM, and other files
2. Quotation and EQs in 24 hours
We will send your our offer and EQs in 24 hours
3. Review and Payment
Review our offer and provide your feedback. After everything is confirmed, you can pay for your order using online payment or direct wire transfer.
4. Quality Check and Delivery
Production will start within 24 hours after payment. Your PCBs and PCBA will go through 100% quality check including AOI, Flying Probe test, E-fixture, Visual Inspection and others. We offer tracked shipping and express shipping (1-3 days air freight).
Explore our wide range of products and services
Our featured products include advanced PCB, Flex PCB, Rigid-Flex PCB and HDI PCB etc. We also provide components procurement service and assembly service.
Multilayer PCB
Manufacturing Price Starts From
$
0.1
Piece Price
- Prototype Lead time 3~7 days
- Manufacturing Lead time 15~20 days
- Layer Count 1~20
- Assembly in-house
- Controlled Impedance PCB
- High-speed materials
*Currently, we accept PayPal, Card Payment and Wire Transfer payment methods.
Flex and Rigid-Flex PCB
Manufacturing Price Starts From
$
0.3
Piece Price
- Prototype Lead time 3~5 days days
- Manufacturing Lead time 15~20 days
- Layer Count 1~10
- Assembly in-house
- Max Dimension 2000mm*550mm
- Sttifeners: PI, FR4, Steel, Tape
*Currently, we accept PayPal, Card Payment and Wire Transfer payment methods.
Advanced/HDI PCB
Manufacturing Price Starts From
$
0.1
Piece Price
- Prototype Lead time: 7~10 days
- Manufacturing Lead time: 15~20 days
- HDI Capability: up to 3+N+3
- Layer Count 1~20
- Assembly in-house
- Via: Blind, Buried, Through-hole
*Currently, we accept PayPal, Card Payment and Wire Transfer payment methods.
Need support?
CONTACT YOUR DEDICATED MANAGER FOR SUPPORT
Rebecca Lu
International sales manager
Based in Oxford, Rebecca has 2 years of experience in Amazon UK and 3 years of PCB industrial experience. She is fluent in both English and Mandarin.
Xi Yang
Senior Sales Manager
Xi has been working in Asunny since 2002. She has rich project experience and deep understanding of the industry. Reach out for Mandarin service.
Lynn Zhu
Sales Assistant
Lynn has 2 years of industry experience. She studied and worked in Korea for the past 8 years. She is fluent in Korean and Mandarin.
Chao Jun Pu
Engineering Lead
Chao Jun has been in the industry for over 8 years and he worked in a few listed companies. He has rich product and project experience.
Common Questions
Most Popular Questions.
If you have any other questions, please contact us for support
Yes we can. We have many years of manufacturing RFPCB with advanced technologies. Please send us your requirements for evaluation and we can sign a NDA agreement before reviewing the files.
Yes, Rigid Flex PCB can be fully customised in terms of size, length, shape, layer count, and materials to meet any specific requirements.
Given the complexity of Rigid Flex, the standard lead time is 7-10 days. We will need your production files to evaluate the fastest lead time. Please notice that express service fee will be charged based on your demanded quantity and provided board design.
We can refund your prototyping fee if you proceed to mass production with us. Please get in touch with us to learn more about what we offer to our long-term business partners.
We hold all the essential quality management certificates such as ISO9001. Please check out our certifications at about us section. All our PCBs are tested under IPC-TM-650 standards. If there are any issues with your orders, you can always get in touch with you assigned account manager for a product exchange or express repair.
Lets get your PCB project started!
We are the full-feature PCB & FPCB manufacturer and Assembly services provider
Need Help?
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Headquarter Address：Gangxing Road 128, Jiujiang City, Jiang Xi province, China
Sales Centre: Nanshan CTF centre Room 2603, Shenzhen; 81 St.Clement's Angel Court, Oxford
Sales Centre: Nanshan CTF centre Room 2603, Shenzhen; 81 St.Clement's Angel Court, Oxford
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