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Rigid-Flex PCB

Rigid-Flex PCB

Used in Dynamic, Space-Constrained ApplicationsRigid-Flex Stackups | Bendable Designs | High Reliability | RoHS & UL Certified

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Rigid-Flex PCB

Integrated rigid sections with flexible tails for compact layouts

Vibration-resistant and reduces the need for connectors

Simplifies assembly and improves long-term reliability

Enables 3D configurations for space-constrained applications

Used in aerospace, medical implants and premium wearables

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Process Capabilities

FeatureTechnical specification
Number of layers4 – 60 layers 
Bending performanceBased on the specific design, the bend performance can range from a basic 90 bend to fit to a full dynamic flex with 360 range of motion in the flex tail that will withstand continuous cycles throughout the product life
Bend featuresBend radius controls the flexibility of the flex portion of the board. The thinner the material the lower the bend radius and the more flexible the flex section
MaterialsRA copper, HTE copper, FR-4, polyimide, adhesive
Copper weights (finished)0.5 OZ – 6 OZ
PCB thickness0.40 mm – 6.0 mm
PCB thickness in flex section0.05mm x 0.8mm
Max. dimensions620 mm x 720 mm
Min. track and gap0.075 mm / 0.075 mm
Min. mechanical drill0.15 mm
Surface finishes availableHASL (SnPb), LF HASL (SnNiCu), OSP, ENIG, Immersion Tin, Immersion Silver, Electrolytic gold, Gold fingers
Why Choose SprintPCB for Rigid-Flex PCBs?
SprintPCB specializes in the manufacturing of rigid-flex PCBs that integrate flexible and rigid board sections into a single, compact solution. Our advanced lamination, drilling, and imaging technologies ensure precise layer alignment, mechanical durability, and signal integrity—making them ideal for complex 3D assemblies, dynamic bending, and space-constrained applications.
From Prototype to Production – We Support You All the Way

  • Engineering Support

  • Prototyping Services

  • Fast Turnaround

  • Seamless Transition to Mass Production

PCB Manufacturing Equipment
SprintPCB operate with most advance equipment in the industry to provide efficient production and high quality products with value added to our partners

Ready to Start Your Rigid-Flex PCB Project?

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FAQ about Rigid-Flex PCBs

What is the production process for a rigid-flex PCB like?
The production process for a rigid-flex PCB is similar to that of a standard PCB, but with additional steps to create the flexible and rigid layers. The flexible layer is typically made from a polyimide material, while the rigid layer is made from a traditional PCB material, such as FR4. The two layers are then combined and laminated together to create the final product.
What industries commonly use rigid-flex PCBs?
Rigid-flex PCBs are widely used in the aerospace, medical and telecommunications industries, among others.
What are the benefits of using a rigid-flex PCB?
Rigid-flex PCBs offer improved durability, reduced space requirements, and better electrical performance compared to standard PCBs. They are also better suited for harsh environmental conditions, such as extreme temperatures, shock and vibration.
How does a rigid-flex PCB differ from a standard PCB?
A standard PCB is typically made of a single layer of material and can only bend or flex to a limited degree. A rigid-flex PCB, on the other hand, has multiple layers and can bend and flex more easily, making it ideal for applications that require a lot of movement or compact design.
What is a rigid-flex PCB?
A rigid-flex PCB is a type of printed circuit board that combines the benefits of rigid and flexible PCBs into one product. It consists of a rigid inner layer and a flexible outer layer, which allows for better versatility and flexibility in design and usage.
Do rigid-flex PCBs have special quality requirements?

Yes. They need strict bend tests, good material control, and careful inspection to avoid cracks or layer separation during use.

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