Flexible Circuit Boards

Flexible Circuit Boards

Automotive Dashboard Flexible Circuit Board

Automotive Dashboard Flexible Circuit Board

Name: Car dashboard soft board

Layers: 2 layers

Plate Thickness: 0.12mm

Material: double-sided non-adhesive electrolytic material

Copper Thickness: 1/2 OZ

Finish: Immersion Gold 1 microinch

Minimum line width/line spacing: 0.08mm/0.075mm

FR4 reinforcement thickness: 0.2mm

Four-layer impedance fpc circuit board

Four-layer impedance fpc circuit board

Name: Four-layer impedance fpc circuit board

Application: Machine Equipment

Type: Four-layer FPC circuit board

Minimum drilling: 0.2mm

Minimum line width/line spacing: 0.1mm/0.1mm

Finished thickness: 0.25+/-0.05mm

Reinforcement: L40.25mmFR4 reinforcement

Flexible Circuit Boards

Five-layer vehicle fpc circuit board

Five-layer vehicle fpc circuit board

Application: machine equipment

Type: Four-layer FPC soft board

Minimum drilling: 0.2mm

Minimum line width/line spacing: 0.1mm/0.1mm

Finished thickness: 0.3+/-0.05mm

Reinforcement: 0.4mmFR4 reinforcement on the front and back

Process requirements: differential impedance of 90 ohms +/- 10% ohms

Double-sided smart wearable fpc circuit board

Double-sided smart wearable fpc circuit board

Name: Double-sided smart wearable fpc circuit board

Basic Parameters: Application: Smart Watch

Type: Double-sided FPC circuit board

Line width/line spacing: 0.73mm/0.54mm

Tolerance: +/-0.03mm

Thickness: 0.13mm

Surface treatment: Immersion gold 1u

Flexible Circuit Boards

Six-layer Flexible Circuit Board

Name: Six-layer PC impedance board

Application: Machine Equipment

Type: Six-layer FPC circuit board

Minimum drilling: 0.2mm

Minimum line width/line spacing: 0.1mm/0.1mm

Finished thickness: 0.25+/-0.03mm

Reinforcement: 0.25mm steel sheet reinforcement on both sides

Surface treatment: Immersion gold (sand blasting, nickel thickness 120 miles; gold thickness 2 miles)

Double-sided FPC flexible circuit board

Double-sided FPC flexible circuit board

Name: Double-sided FPC Flexible circuit board

Basic Parameters: Application: Medical Equipment

Type: Double-sided FPC soft board

Size: 70.5*117.2mm

Minimum drilling: 0.15mm

Plate thickness: 0.1mm

Reinforcement: 0.5mm FR4 reinforcement on the back of the pad

Surface treatment: Shen Jin 1 mile

Flexible Circuit Boards, or Flex PCBs, are a revolutionary advancement in printed circuit boards. Unlike rigid PCBs, Flex PCBs offer exceptional flexibility, allowing them to bend, twist, and conform to the shape of the device or system they are integrated into.


This flexibility opens up a new realm of possibilities for electronic designs, especially in applications involving space constraints, complex geometries, or dynamic movements.


Flex PCBs find applications in various industries, including consumer electronics, medical devices, automotive systems, wearable technology, aerospace, and more. Their ability to conform to complex shapes and withstand dynamic movements makes them suitable for applications that require flexibility, durability, and reliability.

The fabrication capabilities for flexible printed circuit boards (FPCs) can vary among manufacturers. However, here are some common capabilities associated with FPC fabrication:



  1. Layer count: FPCs can be manufactured with single-sided, double-sided, or multilayer configurations, depending on the complexity of the circuit design and the requirements of the application. Multilayer FPCs can provide increased functionality and density.
  2. Substrate materials: FPCs are typically made using flexible materials such as polyimide (PI) or polyester (PET). The choice of substrate material depends on the desired mechanical properties, thermal resistance, and specific application requirements.
  3. Copper weight and thickness: FPCs can be fabricated with different copper weights and thicknesses to accommodate various current-carrying capacities and design considerations. Common copper thicknesses for FPCs include 0.5 oz, 1 oz, and 2 oz.
  4. Circuit trace width and spacing: FPC manufacturers can produce circuit traces with precise widths and spacing to meet specific design requirements. The capabilities for trace width and spacing depend on the manufacturing processes and equipment used by the manufacturer.
  5. Surface finishes: FPCs can be finished with different surface treatments to protect the copper traces and enhance solderability. Common surface finishes include Electroless Nickel Immersion Gold (ENIG), Immersion Silver, HASL (Hot Air Solder Leveling), and OSP (Organic Solderability Preservatives).
  6. Solder mask and legend printing: FPCs can have solder mask coatings applied to protect the copper traces and prevent solder bridges during assembly. Legend printing is the process of adding component designators and other identifying marks to the board for assembly and troubleshooting purposes.
  7. Panelization and routing: FPC manufacturers can panelize multiple FPCs on a single panel for efficient production. They can also provide routing services to separate the individual FPCs from the panel while ensuring clean and accurate cuts.
  8. Quality control and testing: Reputable FPC manufacturers have robust quality control processes in place to ensure that each board meets the specified requirements. They may conduct various tests, such as electrical continuity testing, impedance testing, and dimensional checks, to verify the integrity and performance of the FPCs.

Advantages of Flexible Circuit Boards :

  1. Space Efficiency: Flex PCBs excel in space-constrained applications where traditional rigid PCBs may not fit or be too bulky. This also makes Flex PCBs ideal for compact electronic devices or systems with irregular shapes.
  2. Weight Reduction: Flex PCBs are lightweight compared to rigid PCBs, contributing to overall weight reduction in electronic devices. This advantage is especially crucial in aerospace, automotive, and also in portable electronics industries, where weight savings are essential for improved performance and portability.
  3. High Reliability: Flex PCBs are designed to withstand repetitive bending and flexing without compromising functionality. They are made with specialized materials that offer excellent flexibility, resilience, and durability. 
  4. Enhanced Design Flexibility: Flex PCBs offer unparalleled design flexibility, allowing intricate and three-dimensional circuit layouts. They can be shaped to match the product’s contours, enabling efficient use of available space. 
  5. Increased Signal Integrity: Flex PCBs offer excellent electrical performance and signal integrity. They can be designed with controlled impedance, minimizing signal loss, crosstalk, and electromagnetic interference (EMI). The absence of connectors and cables also reduces the risk of signal degradation.



PCB Drilling machine


PCB pattern plating line


PCB solder mask expose machine


PCB pattern expose machine


Strip film etching line


Solder mask screen silk print machine


Solder mask scrubbing line


PCB Flying Probe Test (FPT)


Fully automatic exposure machine

Why choose us?
24-hour customer service

we provide 24-hour service and support, you will receive a reply to your question within 2 hours and a quotation within 24 hours.

timely delivery

Own PCB factory of 50,000 square meters, the monthly output can reach 60,000 square meters, no minimum PCB order requirements

Free DFM service

Before the official production of the PCB, we will conduct a free DFM review service and support free Allegro, Altium, Protel, PADS, OBD, Gerber and other formats.

Quality assurance

We can provide you with high frequency, high TG, high CTI, buried blind via, aluminum based PCB manufacturing, the quality is fully compliant with IPC 610-D standard, testing and quality assurance

Flexible Circuit Board FAQs
1. What is a flexible circuit board (FCB)?
A1: A flexible circuit board, also known as a flexible printed circuit (FPC) or flexible PCB, is a type of electronic circuit board that uses flexible materials instead of rigid substrates. It allows for bending, folding, and conforming to fit into tight spaces or follow complex shapes.
2. What are the advantages of using flexible circuit boards?
A2: Flexible circuit boards offer several advantages, including: Space-saving design: FCBs can be designed to fit into tight spaces, reducing the overall size and weight of the electronic device. Improved reliability: FCBs have fewer solder joints and interconnections, reducing the potential points of failure and enhancing reliability. Enhanced flexibility: FCBs can bend, fold, and twist, making them suitable for applications with dynamic movements or vibrations. Increased durability: FCBs can withstand repeated flexing and bending without compromising the integrity of the circuitry. Improved signal integrity: The use of flexible materials helps reduce signal loss, impedance mismatch, and electromagnetic interference, resulting in better signal quality.
3. What are the typical applications of flexible circuit boards?
A3: Flexible circuit boards find applications in various industries, including consumer electronics, automotive, medical devices, aerospace, and wearable technology. They are commonly used in devices such as smartphones, tablets, cameras, fitness trackers, automotive instrument clusters, medical sensors, and more.
4.Can flexible circuit boards be customized for specific requirements?
A4: Yes, flexible circuit boards can be customized to meet specific requirements. Manufacturers offer design services to tailor the circuit layout, shape, size, and material selection based on the application's needs.
5.What materials are used in flexible circuit boards?
A5: Flexible circuit boards are typically made using flexible substrates, most commonly polyimide (PI) or polyester (PET). The choice of substrate material depends on factors such as flexibility requirements, temperature resistance, and specific application needs.
6.Can flexible circuit boards be assembled like rigid boards?
A6: Yes, flexible circuit boards can be assembled using traditional surface-mount technology (SMT) or through-hole components. However, special considerations need to be taken into account during assembly due to the flexibility of the board, such as using flexible solder masks and adhesives.
7.What are the design considerations for flexible circuit boards?
A7: Designing flexible circuit boards requires considerations such as bend radius, folding patterns, component placement, routing, and mechanical constraints. Collaboration with experienced FCB designers and manufacturers is essential to ensure a successful design.
8.How can I choose a reliable manufacturer for flexible circuit boards?
A8: When selecting a manufacturer, consider factors such as their experience, expertise, production capabilities, quality control processes, certifications, and customer reviews. Requesting samples, discussing specific requirements, and evaluating their responsiveness and technical expertise can help in choosing a reliable manufacturer.

    white close
    loading icon Loading