FPC Manufacturing Services
Topfast specializes in high-quality flexible PCB boards, including flat flexible cables, HDI flexible circuits, and multi-layer flexible PCBs with impedance control and optional stiffeners.
✓ ICT & FCT Testing
✓ UL, CE, FCC, RoHS Certified
✓ Nitrogen Reflow Soldering
✓ High-Standard SMT Assembly
Why Use Flexible PCBs?
Thin & Flexible ➝ Saves space, reduces weight, ideal for wearables/foldable devices
Dynamic & Durable ➝ Millions of bends, vibration-resistant, perfect for moving parts
Simplified Design ➝ Replaces cables, reduces connectors, easier assembly
Heat/Chemical Resistant ➝ Withstands harsh environments (automotive/medical)
Better Signal Integrity ➝ Low loss in high-frequency apps, strong noise immunity
Advanced Flexible PCB Manufacturing Capabilities
High-quality flexible circuits for demanding applications
Layer Capacity
1-10 standard layers
Up to 16 layers for advanced designs
Precision Tolerances
3 mil traces/spacing
0.1mm laser drilling
Thickness Range
0.05mm to 0.5mm standard
Up to 0.8mm advanced
Detailed Specifications
- Max layers: Up to 16
- Line width/spacing (inner): 3/3 mil
- Line width/spacing (outer): 3.5/4 mil
- Copper thickness: 2 oz (inner/outer)
- Mechanical drill: 0.1 mm min
- Laser drill: 0.1 mm min
- Aspect ratio: 10:1
- Board thickness: 0.1-0.5 mm
- Thickness tolerance: ±0.05 mm
- Impedance tolerance: ±5Ω (≤50Ω)
- Board size: 5×10mm to 9×14″
- Minimum BGA: 7 mil
- Component size: 7×10 mil
- Surface finishes: ENIG, HASL, OSP, etc.
- Solder mask colors: Green, black PI, yellow PI
- Legend options: White, black, red, yellow
- Strain radius: 1.5±0.5 mm
- Press-fit tolerance: ±0.05 mm
- PTH tolerance: ±0.075 mm
Have questions? Our engineering team is ready to assist with your flexible PCB needs.
Contact USPCB Assembly Capabilities
High-precision assembly services for all your electronic manufacturing needs
| Assembly Specifications | |
|---|---|
| Stencil Size Range | 29″ × 29″ (736.6mm × 736.6mm) |
| SMT Capabilities |
|
| Wave-Soldering |
|
| Min. BGA Pitch | 0.008″ (0.20mm) |
| Max. BGA Size | 74mm × 74mm |
| BGA Ball Pitch | 1.00mm (Min) to 3.00mm (Max) |
| BGA Ball Diameter | 0.40mm (Min) to 1.00mm (Max) |
| QFP Lead Pitch | 0.38mm (Min) to 2.54mm (Max) |
Core Materials of Flexible PCBs
Precision-engineered material combinations for optimal performance and durability
Substrate Materials
Polyimide (PI)
High-temperature resistance (up to 400°C)
Superior flexibility and bend endurance
Low thermal expansion coefficient
PET (Polyester)
Cost-effective alternative
Moderate temperature resistance (up to 150°C)
Good chemical resistance
Conductive Layer
Rolled Copper Foil
Highly flexible with excellent fatigue resistance
Superior conductivity (5.96×10⁷ S/m)
Available in 9μm to 70μm thicknesses
Coverlay/Insulation
PI Cover Film
Excellent environmental protection
Prevents oxidation and corrosion
Available with or without adhesive
Photoimageable Solder Mask
Precise pattern definition
Improved solderability
Enhanced insulation properties
Stiffener Options
FR4
Provides localized rigidity
Excellent dimensional stability
Compatible with standard PCB processes
Steel Sheet
Maximum durability for connector areas
Enhanced heat dissipation
Extreme mechanical strength
Applications of Flexible PCBs
Medical Equipment
Industrial Machinery
Unterhaltungselektronik
Automotive
Aerospace
Communications
Frequently Asked Questions
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?
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.
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