ISO 9001 certified

ISO 9001 Certified

ISO 14001 certified

ISO 14001 Certified

RoHS certified

RoHS Compliant

Thick Copper Flexible PCBs

Thick Copper Flexible PCBs from SFX PCB are high-performance flex and rigid-flex circuit boards engineered for demanding current-carrying applications. Built on polyimide substrates with advanced copper configurations, they deliver superior thermal management, durability across millions of flex cycles, and precision layer stacking for aerospace, medical, automotive, and industrial applications.

Flex PCB
Single Layer Flex PCB
Rigid Flex PCB
Multilayer Rigid Flex PCB

Our Range of Products
Flex PCB

Flex PCB

  • Up to 8 layers in low-volume production
  • Laser drilling down to 4mil precision
  • 5 surface coatings: ENIG, OSP, HASL & more
Single Layer Flex PCB

Single Layer Flex PCB

  • 500 million flex cycles without failure
  • Fine line width as low as 2.5mil/2.5mil
  • 1–30 layers supported in low-volume runs
Rigid Flex PCB

Rigid Flex PCB

  • Up to 20 layers with 4mil laser drilling
  • ISO 9001 & ISO 14001 certified quality
  • Bendable, foldable 3D spatial flexibility
Multilayer Rigid Flex PCB

Multilayer Rigid Flex PCB

  • IPC Class II quality control on every board
  • Stack-up & quote delivered within 8 hours
  • ENIG, OSP & lead-free HAL surface finishes

Frequently Asked Questions

What is a thick copper flexible PCB?

A thick copper flexible PCB is a flex circuit board manufactured with heavier-than-standard copper traces — typically 2 oz or more — on a polyimide substrate. This construction enables higher current-carrying capacity, better thermal dissipation, and improved durability, making it ideal for power electronics, automotive systems, and industrial control applications.

What copper weights are available for flexible PCBs?

What base materials are used in thick copper flexible PCBs?

How many layers can a thick copper flexible PCB have?

What industries use thick copper flexible PCBs?

What surface finish options are available for flexible PCBs?

What quality standards do SFX PCB's flexible PCBs comply with?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

Aerospace & Defense

Aerospace & Defense

Used in radars, night vision systems, guidance electronics, and plasma displays requiring high-reliability flex interconnects.

Medical Devices

Medical Devices

Deployed in defibrillators, hearing aids, ultrasound devices, and pulse generators demanding precision and compact layouts.

Automotive Electronics

Automotive Electronics

Integrated into dashboards, ABS systems, transport control units, and relay modules requiring durable, flexible circuits.

Industrial Automation

Industrial Automation

Utilized in industrial control devices, sensors, automation equipment, and complex-shaped electronic enclosures.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

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Custom Flexible PCB for Compact Electronic Devices

Custom flexible PCBs engineered for compact electronic devices, including single-layer, multi-layer, and rigid-flex configurations on polyimide substrates. Designed for applications in medical, aerospace, automotive, consumer electronics, and industrial sectors, these boards deliver superior flexibility, miniaturization, and reliability with up to 500 million flex cycles and fine line widths down to 2.5mil.

Why Aerospace, Medical & Industrial Engineers Choose SFX PCB

15+ Years of PCB Manufacturing Expertise

Over 15 years of specialized PCB and PCBA manufacturing experience, delivering high-reliability flex and rigid-flex boards to global industries.

Multi-Standard Certified Facilities

ISO 9001, ISO 14001, ISO 13485, and IPC-A-610 Class 2/3 certified production ensures every board meets stringent quality and safety benchmarks.

End-to-End Manufacturing & Fast Turnaround

From free DFM analysis and prototyping to mass production, SFX PCB delivers 100% electrically tested boards with quotes in as little as 8 hours.

Get a Custom Quote for Thick Copper Flexible PCBs

Submit your design files and requirements. Our engineers will respond with a stack-up review and competitive pricing within 8 hours.

Contact Us Today

For immediate assistance, feel free to give us a direct call at (+1) 5103455000 You can also send us a quick email at info@sfxpcb.com