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Bendable · Flexible · Reliable
Flexible
Flexible
Printed Circuit
Boards
High-quality flexible and rigid-flex PCBs engineered for dynamic applications where space, weight and movement matter.
0.075mmMin Trace
1–10Layers
✦
IPC-6013
Flex/Rigid-Flex Performance
✦
IPC-2223
Sectional Design Standard
✦
ISO 9001
Quality Management
✦
RoHS
Hazardous Substance Free
✦
UL 94
Flammability Rating
✦
ISO 14001
Environmental Management
IPC-6013 STANDARD
Flex PCB Portfolio
Our engineering team delivers precision-machined flexible circuits optimized for static and dynamic high-performance environments.
Min. 0.05mm
01
Single Layer Flex
Optimized for ultimate thinness and high-speed dynamic bending. Perfect for space-constrained mobile and peripheral connectivity.
- Ultra-low profile (75μm thickness)
- Superior dynamic flexibility
- High-volume cost efficiency
Plated Vias
02
Double Layer Flex
Dual conductive layers with PTH (Plated Through Hole) interconnections, providing balanced density and performance.
- Advanced circuit routing density
- Enhanced EMI shielding options
- Robust medical-grade reliability
Up to 10 Layers
03
Multilayer Flex
Sophisticated 3+ layer architecture for impedance control and complex shielding in mission-critical aerospace systems.
- Strict impedance control (±10%)
- Dedicated ground/power planes
- High-density interconnects (HDI)
3D Hybrid
04
Rigid-Flex Mastery
The convergence of rigid FR4 stability and polyimide flexibility. Eliminates connectors for unmatched 3D spatial efficiency.
- Eliminates connector failures
- Reduces total assembly weight
- Industrial/Mil-Spec durability
Capabilities
Technical Specifications
Our flexible PCB manufacturing parameters at a glance
1–10
Flex Layers
Single to multilayer
0.075mm
Min Line/Space
Trace width & spacing
0.1mm
Min Hole Size
Flex laminate drilling
±0.1mm
Bend Radius
Minimum dynamic bend
0.05–0.3mm
Base Thickness
Available flex substrate
1–2oz
Copper Weight
Rolled annealed copper
SUBSTRATE SCIENCE
Materials Comparison
Select the optimal base laminate for your operating environment. From standard consumer electronics to high-frequency 5G microwave applications.
| Technical Property | PI Polyimide Standard | PET Polyester Economy | PEN Polyethylene Industrial | LCP Liquid Crystal Polymer Premium RF |
|---|---|---|---|---|
| Operating Temp. | −65°C to 260°C | −40°C to 105°C | −50°C to 155°C | −200°C to 240°C |
| Dielectric Constant (Dk) | 3.4 – 3.5 | 3.3 | 3.2 | 2.9 – 3.2 |
| Moisture Absorption | 2.5 – 3.0% | 0.4% | 0.3% | <0.04% (Ultra Low) |
| Tensile Strength | 180 MPa | 180 MPa | 220 MPa | 200 MPa |
| Flex Endurance | ||||
| RF / 5G Performance | ||||
| Relative Cost | ||||
| Typical Application | Aerospace, Military, High-end consumer | Disposables, basic sensors | Automotive lighting, industrial control | RF Antennas, 5G Infrastructure |
Performance Level
Unit Cost
* LCP highlighted as the recommended substrate for high-frequency low-loss designs.
OPERATIONAL EXCELLENCE
Manufacturing Workflow
A multi-stage precision engineering process specialized for the unique thermal and mechanical properties of flexible laminates.
PHASE A
01
Substrate Preparation
Laminates are precision-cut and thermally stabilized. Surface energy is verified via plasma treatment to ensure maximum copper adhesion.
Precision ±5μm
Surface Plasma Treated
PHASE B
02
Laser Micro-Drilling
High-speed CO2/UV laser systems create blind and buried micro-vias down to 0.1mm without any mechanical stress to the flex laminate.
Min Hole 0.1mm
Accuracy ±25μm
PHASE C
03
Fine-Line Imaging
UV-collimated photoimaging transfers complex circuit patterns to the copper. Controlled chemical etching achieves ultra-fine trace/gap ratios.
Trace/Gap 0.075mm
Exposure UV-Collimated
PHASE D
04
Protective Lamination
Application of PI coverlay or flexible solder mask via vacuum pressure lamination to ensure permanent insulation during repeated flexing.
Insulation PI Coverlay
Finish ENIG / OSP
Catalog
Flexible PCB Products
Professional flexible PCB manufacturing for diverse application sectors
4-Layer Flexible PCB
This article introduces Topfast’s 4-layer flexible PCBs, highlighting their high-density routing, dynamic bendability, impedance control,…
Single-Sided Flexible PCB
This article introduces Topfast’s professional single-sided flexible PCB products, highlighting their advantages, technical specifications, applications,…
Multilayer Flexible PCB
Multilayer Flexible Printed Circuit Boards (Multilayer FPCs) are high-performance interconnect components composed of alternating layers…
Double-Sided Flexible PCB
Double-Sided Flexible PCBs, known for their lightweight, bendable properties, and dual-layer routing capabilities, have become…
FAQ
What certifications do PCB factories have?
All of our products are IPC rated with ISO 14001; ISO 9001; CE; ROHS certificates, etc. Our products are widely used in communication, medical equipment, industrial control, power supply, consumer electronics and aerospace, automotive industry and other fields.
What types of flexible PCBs do you offer?
Topfast always adheres to the service concept of customer first and quality first, and provides diversified customized services, which can produce single-sided boards, double-sided boards, multilayer boards and so on.
What are the advantages of your flexible boards over other manufacturers?
The company has world-class production equipment (laser drilling machine, VCP through-hole filling line, blind hole AOI testing equipment, ceramic grinding line, vertical vacuum resin blocking machine, etc.), first-class technical team, mature product line, perfect service flow, to provide one-stop PCB services from design, sampling to mass production and assembly.
What is the lead time for PCB boards?
We can deliver double-sided samples in 24 hours at the earliest, but we need to evaluate the delivery time according to the design file and the quantity.
What are the main applications of flexible circuit boards?
The products are widely used in communication (cell phones, computers, etc.), medical equipment (blood analyzers, hearing aids, etc.), industrial control, power supply, consumer electronics and aerospace, automotive industry and other fields.
What materials are used in flexible PCBs?
Flexible PCBs typically use copper as the conductive layer and polyimide as the insulating material. In addition, adhesives and reinforcing ribs are used to bond and support the layers.
What is the typical thickness of a flexible PCB?
The typical thickness range for a 2-layer flexible PCB is 0.11 mm to 0.2 mm.
Can flexible PCBs be customized for specific applications?
Yes, flexible PCBs can be fully customized in terms of size, shape, layer count, and materials to meet the specific requirements of your application.
Can flexible PCBs withstand high temperatures?
Flexible PCBs are designed to withstand a wide range of temperatures, making them suitable for automotive, aerospace, and industrial applications where thermal management is critical.
Knowledge Hub
Latest News
Technical articles and industry insights on flexible PCB manufacturing
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✓ Free Flex Design Review
✓ 1-Hour Quotation
✓ No Hidden Costs
✓ IPC-6013 Certified