Rigid-Flex PCB Manufacturer

Hybrid Circuit Solutions

ISO 9001|ISO 13485|IATF 16949
Rigid-Flex PCB Manufacturer

What is Rigid-Flex PCB?

Rigid-flex PCBs seamlessly integrate rigid and flexible circuit technologies into a single interconnected assembly. By bonding flexible polyimide layers with fixed FR4 stiffeners, these hybrid circuits eliminate the need for connectors and ribbon cables, significantly improving signal integrity while enabling complex 3D packaging solutions. The result is a lighter, more reliable design that withstands vibration, shock, and harsh environmental conditions.

Polyimide Flex + FR4 rigid construction
Flex-in-core and flex-on-external structures
Eliminates connectors and cable assemblies
Tight impedance tolerance: ±3Ω/±5%
Min twist & warp: 0.75% (symmetrical)
Max aspect ratio 12:1 for through holes

Technical Specifications

MaterialPolyimide Flex + FR4
Panel Size10mm×15mm to 406mm×736mm
Min. Trace/Space3.5mil / 4.0mil
Min. Laser Via4-6mil (Advanced: 6mil)
Min. Mechanical Drill0.15mm (≤1.6mm), 0.2mm (≤2.5mm)
Min. Half-Hole (PTH)0.3mm
Max. Buried Hole0.4mm
Max. Drill Hole6.3mm
Max. Inner Copper3oz
Board Thickness0.2-4.0mm
Max A/R Through Hole12:1
Max A/R Laser Blind0.8:1
Impedance (Single-ended)±3Ω (≤50Ω), ±5% (>50Ω)
Impedance (Differential)±3Ω (≤50Ω), ±5% (>50Ω)
Surface FinishENIG, HASL, OSP, Immersion Silver
Solder Mask ColorGreen, Red, Yellow, Blue, White, Black, Matte variants
Coverlay ColorYellow, Brownish Yellow
Outline Tolerance±0.1mm

Industry Applications

Aerospace & Defense

Mission-critical avionics systems, flight controls, satellite communications, and radar equipment. Our 10+ layer rigid-flex designs meet stringent requirements for high signal integrity, lightweight construction, and mechanical resilience with precise impedance control.

Medical Devices

Advanced imaging equipment, surgical robots, patient monitoring systems, and implantable devices. Rigid-flex technology enables miniaturization while maintaining the reliability essential for life-critical medical applications.

Automotive Electronics

ADAS sensors, infotainment systems, dashboard displays, and camera assemblies. Rigid-flex PCBs withstand automotive vibration, temperature extremes, and provide reliable interconnections in space-constrained enclosures.

Industrial & Robotics

Automation controllers, robotic arms, test equipment, and sensor modules. The mechanical durability of rigid-flex circuits handles continuous movement and harsh industrial environments with exceptional reliability.

Our Manufacturing Process

1

Design Review & Stackup

Our engineers collaborate on optimal layer stackup configuration—whether bookbinder, asymmetrical, flex-in-core, or flex-on-external—tailored to your specific requirements.

2

Material Selection

Application-specific material selection based on thermal, mechanical, and electrical requirements. Polyimide flex layers paired with appropriate FR4 or specialty rigid materials.

3

Laser Drilling

Precision laser drilling creates ultra-small microvias down to 3 mil diameter, enabling high-density interconnects while maintaining signal integrity.

4

Through-Hole Plating

After mechanical drilling, holes are chemically cleaned and copper-deposited through electroless and electrolytic plating processes for reliable via connections.

5

Sequential Lamination

Multiple precisely controlled lamination cycles bond rigid and flex layers using coverlay polyimide film with acrylic or epoxy adhesives.

6

Testing & Verification

Comprehensive electrical testing verifies isolation, continuity, and circuit performance. Every board is inspected to IPC-A-610H Class 3 standards.

Why Choose FlexiPCB?

In-House Manufacturing

Complete fabrication and assembly under one roof eliminates third-party dependencies and ensures quality control at every step.

Advanced Capabilities

Up to 30-layer rigid-flex with 3/3 mil features, heavy copper options, and configurable stack-up configurations for complex designs.

IPC Class 3 Certified

All builds manufactured to IPC-A-610H Class 3 standards, ensuring circuit reliability for aerospace, medical, and automotive applications.

Engineering Support

Dedicated rigid-flex engineers provide comprehensive DFM review, design verification, and optimization recommendations with every project.

Rigid-Flex PCB Showcase

See our rigid-flex PCB products and manufacturing capabilities

Laser Cutting Rigid-Flex PCB

Precision laser cutting for rigid-flex PCB separation

16-Layer Industrial Rigid-Flex

High layer count rigid-flex for industrial control systems

20-Layer Rigid-Flex Board

Ultra-complex 20-layer rigid-flex PCB demonstration

Explore Our Other Services

Discover our complete range of flex PCB manufacturing and assembly services