FPC PCB design is one of the popular circuit board types for flexible electronic circuit needs. Designed to replace traditional wiring harnesses, flexible circuit boards can meet a wide range of complex electronic designs. Although the performance of a flexible PCB depends on a variety of factors, the primary material plays a key role in it.
what are the components of FPC
In the structure of FPC flexible circuit, the composition of the material is composed of flexible copper clad plate (FCCL), covering film, bond film and so on.
Flexible copper clad plate (FCCL) : flexible copper clad plate film common polyimide film (PI), polyester (PET), polyethylene glycol naphthalate (PEN), liquid crystal display polymer (LCP) and other polymer materials plastic film. In the FPC flexible circuit board, copper-covered plate mainly shoulders the role of conductivity, insulation layer and support point.
Covering film: It is composed of organic chemical plastic film and adhesive. The effect of covering film is to maintain the conductor part of the flexible power circuit already carried out. Adhesive film has different plate film and adhesive types and thin and thick specifications.
Bond film: is in a substrate film on the two or one side of the pouring binder and formed, there is no substrate of pure adhesive layer of bond film, bond film has different adhesive types and thickness specifications. Bond film is used for interlayer bonding and insulation of multilayer boards.
Ordinary flexible circuit board is mainly composed of substrate + covering film two materials, first talk about the substrate, the substrate is mainly composed of PI or PET+ adhesive + copper, PI is polyimide insulating resin material, characterized by high temperature resistance, good bending performance, the product reliability is good, PET price is more than 2 times, as the main material of flexible pcb, PET is polyester insulating resin material, characteristics just opposite to PI, general FPC manufacturers have rarely used.
advantages of FPC soft board
Flexibility of flexibility
One of the obvious advantages of using FPC soft board is that it can be more easily wired and connected in three-dimensional space, and can also be curled or folded for use. As long as it is crimped within the allowable radius of curvature, it can withstand thousands to tens of thousands of uses without damage.
Reduce the volume
In the assembly, compared with the use of wire cable, flex pcb soft plate conductor section thin and flat, reduce the size of the wire, and can be formed along the housing, so that the structure of the equipment is more compact, reasonable, reduce the volume of the assembly. Compared with rigid PCB, the space can be saved by 60~90%.
Reduce weight
In the same volume, FPC soft board and wire cable than, under the same load flow, its weight can be reduced by about 70%, compared with rigid PCB, the weight can be reduced by about 90%.
The consistency of the installation
With FPC soft board installation, eliminate the error of wire cable connection. As long as the processing drawings have been proofread through, all the subsequent production of winding circuits are the same. There will be no wrong connection when installing the connecting line, which increases the reliability.
Electrical parameter design controllability
According to the requirements, the designer can control the capacitance, inductance, characteristic impedance, delay and attenuation during the design of flexible pcb soft board. Can be designed to have the characteristics of a transmission line. Because these parameters are related to wire width, thickness, spacing, insulating layer thickness, dielectric constant, loss Angle tangent and so on, this is difficult to do when using wire cables.
The end can be welded as a whole
Like rigid PCBS, FPC flexible boards have terminal pads that eliminate stripping and tin lining of wires, thus saving costs. The terminal pad is connected to the element, device and plug. Dip or wave welding can be used instead of manual soldering of each wire.
Material use is optional
FPC soft board can be manufactured with different base materials according to different requirements. For example, mylar can be used in applications requiring low cost assembly. In demanding applications where excellent properties are needed, polyacyl films can be used.
Low cost
With FPC soft board installation, the total cost can be reduced.
Due to the consistency of various parameters of the wire of the flex pcb soft board; The implementation of integral end, eliminate the cable wire installation errors and rework often occur, and the replacement of FPC soft board is more convenient.
The application of FPC soft board simplifies the structural design, it can be directly adhered to the member, reducing the wire clamp and its fastener.
For the need to have a shielded wire, with FPC soft board price is lower.
Continuity of processing
The continuous production of FPC soft board can be realized because of the continuous supply of soft foil sheets in rolls. This also helps to reduce costs.
group profile
As a comprehensive service provider of electronic technology and electronic products, Zhuhe Group can provide customers with professional OEM/ODM services, uphold the spirit of independent innovation and continue to deepen ODM business, develop the new energy vehicle market, provide strong technical support for the development of the industry with strong innovation capabilities, and provide professional services and excellent products for the industry with solid patented technical strength. The group has more than 70 software and hardware development engineers, has 86 patents, and has passed the certification of ISO9001, ISO14001, IATF16949, ISO13485 and intellectual property standard implementation system.
Why choose us?
1. Rich industry experience, 90% of the engineering personnel have at least ten years of industry experience.
2. Safe and reliable testing equipment, strict quality control, each process gives priority to the first article inspection.
3. Scientific quality management system, the company conforms to the ISO quality management certification system, 24-hour fast quality feedback.
4. Perfect quality traceability system, timely summary and optimization for existing quality problems, so that customers have no worries.
Q: What is a flexible circuit board?
A: Flexible circuit board is a kind of circuit board material, which is usually composed of thin film substrates such as polyimide film, conductive materials such as copper foil and external protective layer, which has the characteristics of high flexibility, light weight, and high temperature resistance.
Q: What are the application fields of flexible circuit boards?
A: Flexible circuit boards have a wide range of applications in various electronic devices, medical equipment, automotive equipment and other fields, such as mobile phones, tablet computers, blood glucose meters, thermometers, car tachographs, car navigation systems, etc.
Q: What is the application prospect of flexible circuit boards?
A: Flexible circuit boards have a wide range of application prospects, with the strengthening of intelligent, lightweight, high reliability and other development trends, flexible circuit boards will be more widely used and promoted in various fields. At the same time, with the continuous improvement of technology, flexible circuit boards will gradually develop high-frequency, high-speed, high-reliability and other characteristics, and further broaden the application field.
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