FPCB (5)


FPCB cost

FPCB cost can be from 0.5USD/PC to 600USD/PC. Their price can be so different, just because there are a lot of factors can affect FPCB cost, such as size, layer contained, finishing request, structure, order quantity etc. So different design flex PCB can be different, if you want to know your Flexible PCB price, you can contact us, we manufacturing Flex PCB since 2000, we can evaluate cost for you free of charge.

FPCB (5)

What is FPCB?

A FPCB constructed of polyester or polyimide film is called a flexible circuit board (FPC), and it is very dependable. FPC, sometimes referred to as flexible circuit board or flexible circuit board, is chosen for its low weight, thin thickness, unrestricted bending and folding, and other outstanding qualities.

FPC is a technology created in the 1970s for the advancement of American space rocket technology. A huge number of precision components are crammed into tiny, constrained places to create flexible circuits by being implanted in flexible thin plastic sheets with circuit design. This type of circuit surpasses the limitations of conventional connectivity technology by being flexible, foldable, lightweight, compact in size, and good at dissipating heat. Insulating sheet, conductor, and adhesive make up the ingredients that make up a flexible circuit.


Advantages and disadvantages of FPCB


  1. Short: short assembly time;
  2. Small: size smaller than PCB;
  3. Light: weight lighter than PCB (rigid board);
  4. Thin: thickness thinner than PCB.

Advantages of FPCB:

  1. The volume is small, the weight is light, and the assembly density is high. Because of the high-density assembly, there are fewer connections between parts and components, which improves reliability;
  2. It can increase the wiring layer, increasing the design flexibility; it can also form the circuit’s impedance, to a certain extent, a high-speed transmission circuit, set the electromagnetic shielding layer, and install metal core layers to meet the function and need for special thermal insulation; High reliability and simple installation.

FPCB Disadvantages:


High reliability inspection method is essential due to high cost and long cycle. Electronic technology has produced the multilayer printed circuit, which has many functions, is fast, has a small volume, and has a huge capacity. With the advancement of electronic technology, particularly the widespread use of large-scale and ultra-large-scale integrated circuits, fine lines with high density, high speed, high precision, and high number of changes start to arise in multilayer printed circuits.

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FPCB application


Our FPCB are widely used in a lot of industries, and can be used to make devices including watches, tablets, 5G network, artificial intelligence, Internet of Things, intelligent wear, driverless, vehicles, drones, computers, laptops, electronic goods, cameras, etc. The performance and service life of the electrical items can be so much better and longer after using FPCB, thanks to the existence of flex PCB, better device can be manufactured out.


High-density FPCB – In addition to having microvias, they also have great electrical performance, enhanced reliability, and better IC utilization. They also provide technological solutions for layout, design, and construction.

Rigid-Flex FPCB – producers assemble the rigid circuit board using PTH technology. Then, they combine hard and flexible layers. Furthermore, to develop tiny connecting areas with low failure rates, the designers combine stiff and flexible layers.

Single-sided Flexible PCB – It is recommended for use in extremely flexible circuit technology and has a copper layer that conducts on one side.

Double-sided Flex PCB – Via (PTH) plated through holes or vias, its layers are connected. Both sides of the PCB have copper layers, which are simple to produce.

Multilayer FPCB – PTH or vias are used in multilayer FPCBs to connect the layers. The PCB also includes 10 copper layers and can be used with high-density connectors.

Why can we provide you high quality FPCB?


Ensuring quality during printed circuit board manufacturing is a continual process from start to finish. We try our best in the below six area to achieve high quality FPCB for our customers.

IPC standard control

We are able to offer its customers the highest standards of production quality thanks to IPC training and certification. Additionally, IPC certifications assure that every employee is working to the same standards and criteria, ensuring a consistent and uniform approach to the various assembly procedures. Additionally, we’ll keep a qualified IPC trainer on-site so they can keep their team up to date with their mandatory biannual IPC certifications.

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Component quality assurance

On printed circuit boards, component failures can be a very challenging issue to solve. To ensure that the components used on your FPCB board are of the highest quality, we have a well-documented process in place for inspection and quality assurance. Additionally, we have component engineering specialists on staff that can communicate with a large network of component suppliers and manufacturers to provide you the best parts in the shortest amount of time.

Process quality Control

We would thoroughly document each stage of the PCB assembly process in accordance with ISO guidelines for quality control procedures, risk management, and traceability. Additionally, by regulating soldering temperatures, shelf life, and cleanliness requirements, we also have well-documented process controls in place to oversee the caliber of the manufacturing operation.

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Assembly inspection

We set up many inspection locations during Flex PCB assembly so that inspectors could concentrate on the work that had been done before rather than trying to catch everything at once. To discover potential issues with solder junctions and improperly arranged components, these tests should be carried out manually and using automated inspection equipment.

Quality Inspection and Test

The FPCB board needs to be checked once more after it is finished, and we have a thorough inspection procedure in place before returning the finished product to you. Testing the board is a further step in the whole process of quality assurance. You can anticipate that we have created a thorough test strategy for the design based on your requirements and feedback. There are various techniques of testing for the circuit board.

Perfect Workspace

We create a clean, organized workspace with well maintained, modern equipment that is suitable to the task of creating precision FPCB. Quality, as has been said, is always the outcome of deliberate effort and is never the consequence of accident. This is reflected in our facilities through the layout of the assembly lines, and it should also be reflected in our aims and culture.

We not only can make high quality FPCB for you, but also we can offer competitive price, you can contact us to get a quotation for reference now. Our email: sales@intopcb.com

Precautions for FPCB board design:

In the layout, when the size of the circuit board is too large, although the welding is easier to control, the printing line is long, the impedance increases, the noise resistance decreases, and the cost increases; If it is too small, the heat dissipation will drop, the welding is not easy to control, and the adjacent lines will easily interfere with each other, such as the electromagnetic interference of the circuit board.

FPCB (16)

Reduce EMI interference by shortening the link between high-frequency components.

Large-weight components (those weighing more than 20 g) must be fastened with supports before being welded.

For heating elements, heat dissipation must be taken into account to avoid significant T The thermal sensor must be placed far from the heat source in cases of failures and rework.

The placement of the components should be as parallel as feasible, which is both attractive and practical for mass production. The layout of the circuit board is a 4:3 rectangle.

To avoid wiring discontinuity, the wire width must not be sudden.

The copper foil on the circuit board is prone to expanding and falling off when heated for an extended period of time. Copper foil with a wide surface area should be avoided.

Of course, if you contact us, we can help you to check your FPCB design for free, and we will inform you of any unreasonable design.

How to solder FPCB?

Step1: To prevent poor tin plating or oxidation of the bonding pad, which could result in poor soldering, apply flux to the bonding pad before welding. In most cases, the chip doesn’t require treatment.


Step2: To avoid damaging the pins, carefully position the PQFP chip on the PCB board using tweezers. Make sure the chip is positioned correctly and align it with the bonding pad. Set the soldering iron to a temperature of greater than 300 °C, dip the tip in a small amount of solder, press the chip into place using a tool, add a small amount of flux to the pins at the two diagonal positions, press the chip down again, and then solder the pins at the two diagonal positions to ensure that the core is fixed but cannot be moved. Recheck the alignment of the chip after welding the diagonals. It can be changed or removed as needed.


Step3: Flux should be applied to all pins to keep them moist when welding, and solder should be added to the tip of the soldering iron. Each chip’s pin should be in contact with the end of a soldering iron tip until solder begins to flow into the pin. To avoid overlapping caused by too much soldering tin, maintain the soldering iron’s tip parallel to the pin being welded when welding.


Step4: To clean the solder after soldering all the pins, soak all the pins with flux. When necessary, cut away extra solder to get rid of any shorts and laps. Last but not least, check for bad soldering using tweezers. After the examination, thoroughly wipe the hard brush along the direction of the pins with alcohol to remove any remaining flux from the circuit board.


Step5: Components for chip resistance capacitance are fairly simple to solder. Place one end of the component after tinning a solder junction. Use tweezers to clamp the component. After welding one end, make sure the other is properly positioned; if so, weld that end as well.


Some FPCB manufacturer lack of experience of control quality of soldering FPCB, may make out defective PCB. We manufacturing FPCB nearly 20 years, Our team own reach experience of fabrication  high quality Flex PCB and got a lot good feedback from our customers. If you need FPCB,  you can email us: sales@intopcb.com or click here to leave message.