PCB Fabrication

Flexible Circuit Board

Are you an OEM manufacturing wearables or other flexible devices? You would require an equally flexible circuit boards that accommodate all the components you need. Twisted Traces stands at the forefront of flex PCB manufacturing, delivering innovative flexible circuit board solutions that meet the demanding requirements of modern electronics. We produce single-layer and multilayer flexible PCBs with precision and consistency. Our USA-based production facility enables us to deliver the highest quality standards, quick turnaround times, and more. Let us help you streamline your next project with reliable, cost-effective, flexible PCB production.

Types of Flexible PCBs We Manufacture

At Twisted Traces, we understand that every project has unique requirements. That’s why we offer a full range of flexible circuit board solutions, from simple designs to complex, multilayer builds. Our expertise in flex PCB manufacturing ensures high-quality performance, whether you need a lightweight single-layer circuit or a robust multilayer system.

Single-Layer Flexible PCB: A single-layer flexible PCB is the most cost-effective option, ideal for straightforward designs with minimal complexity. These boards use one conductive layer and are commonly used in applications where flexibility, lightweight construction, and affordability are key.
Double-Sided Flexible PCB: Our double-sided flexible circuits expand design possibilities by incorporating conductive layers on both sides of the substrate, connected through plated through-holes. This configuration enables more complex routing schemes while maintaining excellent flexibility and reliability.
Multilayer Flexible PCB: When designs demand higher circuit density and advanced functionality, multilayer flexible PCBs are the solution. With multiple conductive layers interconnected through vias, they provide greater performance and reliability for aerospace, medical, and industrial applications. Our sophisticated designs stack multiple conductive layers separated by insulating materials, enabling complex impedance-controlled routing, integrated shielding, and high-density interconnections.
Rigid-Flex PCB: For projects that require the strength of a rigid board with the adaptability of a flexible circuit, rigid-flex PCBs combine the best of both worlds. These are well-suited for compact, high-performance electronics where space and reliability are critical. Our multilayer capabilities support rigid-flex combinations, allowing designers to integrate flexible sections with rigid board areas in a single assembly.

Our Flexible PCB Manufacturing Capabilities

At Twisted Traces, we have advanced flexible PCB production facilities equipped with cutting-edge technology and staffed by experienced professionals. Our manufacturing capabilities span the complete fabrication process, from raw material preparation through final testing and quality assurance.

Capability	Details
Layers	Single-layer, double-layer, and multilayer flexible PCBs (1–12 layers standard, higher on request)
Materials	High-performance polyimide substrates; FR-4 for rigid-flex combinations
Board Thickness	As low as 0.008” (0.2 mm) for single-layer flex; scalable for multilayer designs
Copper Thickness	0.5 oz – 2 oz (standard); custom options available for high-power applications
Trace Width / Clearance	As fine as 4/4 mil depending on copper weight and design requirements
Surface Finishes	ENIG (Gold), Immersion Silver, OSP, Lead-free HASL
Solder Mask & Coverlay	Green, black, white, and amber polyimide coverlay; customized options for flexibility and protection
Minimum Hole Size	Down to 6 mil (finished) with tight tolerance control
Board Size Range	Flexible circuits up to 24” in length (custom sizes available)
Compliance	RoHS-compliant, lead-free flexible PCB manufacturing

Advantages of Choosing Flexible Circuit Boards

Switching to a flexible circuit board offers a range of benefits that traditional rigid PCBs simply can’t match. At Twisted Traces, we help our clients unlock these advantages with precision-engineered flex PCB manufacturing and assembly, depending on their requirements.

Design flexibility: Flexible PCBs can bend, twist, and fold, making them ideal for compact and irregularly-shaped electronic devices. These boards conform to the shape of the device.
Lightweight & space-saving: These PCBs reduce overall product weight and footprint without compromising functionality.
Durability & reliability: With fewer connectors and solder joints, flexible PCBs minimize failure points and withstand vibration, shock, and thermal stress.
Improved performance: Excellent signal integrity, controlled impedance, and optimized heat dissipation enhance long-term reliability.
Cost efficiency in assembly: Simplified interconnections reduce assembly time, labor, and overall production costs.
Versatile applications: From single-layer to multilayer flexible PCB designs, these boards support a wide range of industries, including aerospace, medical, automotive, and consumer electronics.

Industries We Serve

At Twisted Traces, our expertise in flex PCB manufacturing allows us to support diverse applications with precision, reliability, and fast turnaround times.

Medical devices: In medical devices, compact, reliable, flexible PCBs are used for diagnostic equipment, wearable health monitors, and implantable devices.
Aerospace & defense: In this industry, lightweight, high-performance circuits are designed to withstand extreme temperatures, vibration, and mission-critical conditions.
Automotive: The Automotive industry requires single and multilayer flexible PCBs for advanced driver-assistance systems (ADAS), infotainment, lighting, and sensor technology.
Consumer electronics: Here, they are used as slim, durable circuits for smartphones, tablets, wearables, and smart home devices.
Industrial equipment: Rugged flexible PCBs are used in robotics, control systems, and heavy-duty industrial automation.
Telecommunications: In this sector, flex boards are used in high-speed signal integrity for antennas, routers, and advanced communication devices.

Frequently Asked Questions (FAQs)

Can flexible PCBs handle high-speed or RF applications?
Yes. Our flexible PCB manufacturing process supports controlled impedance and low-loss materials, making them suitable for high-speed signal transmission and RF designs. We work closely with clients to fine-tune stackups and trace geometry for optimal performance.

How do you ensure reliability in flexible PCB production for harsh environments?
We use high-temperature polyimide substrates, advanced adhesives, and protective coverlays. Combined with rigorous testing, this ensures flex PCBs can endure vibration, thermal cycling, and demanding aerospace or automotive conditions.

Do you support prototyping and scaling to full production?
Absolutely. We offer quick-turn flexible PCB prototypes for testing and validation, followed by seamless scaling into small, medium, or large production runs.

Can you integrate rigid-flex designs if my project requires both rigidity and flexibility?
Yes. In addition to standard flexible circuit boards, we manufacture rigid-flex PCBs for projects that need mechanical strength in some areas while maintaining flexibility in others. This is ideal for compact, high-density applications.