Flexible circuit board features:
(1)FPC is small in size and light in weight.
(2)FPC can be moved, bent and twisted.
(3)FPC has excellent electrical properties, dielectric properties and heat resistance.
(4)FPC has high assembly reliability and operability.
(5)FPC can be installed with three-position connection.
(6)FPC is beneficial to heat diffusion.
(7) Low cost.
(8) Continuity of processing.
Flexible circuit board product characteristics:
Soft board is a printed circuit made of flexible insulating substrate, which has many advantages that hard printed circuit boards do not have.
The product is small in size and light in weight, which greatly reduces the volume of the device and is suitable for the development of electronic products in the direction of high density, miniaturization, light weight, thinness and high reliability. With high flexibility, free bending, winding, twisting, folding, three-dimensional wiring, arbitrary arrangement and shape change according to space layout requirements, and arbitrary movement and expansion in three-dimensional space, so as to achieve the integration of assembly and wire connection.
Excellent electrical properties, high temperature resistance and flame resistance. Stable chemical change, good stability and high reliability. It has higher assembly reliability, provides convenience for circuit design, and can greatly reduce the assembly workload, and it is easy to ensure the performance of the circuit and reduce the cost of the whole machine. The strength of reinforced materials is increased to obtain additional mechanical stability. To some extent, the combination of soft and hard design also makes up for the slight deficiency of the flexible substrate in the component carrying capacity.
Rigid circuit board features:
It can be densified. For more than 100 years, the high density of printed circuit boards has developed with the improvement of integrated circuit and the progress of installation technology.
High reliability. Through a series of inspections, tests and aging tests, the PCB can work reliably for a long time (generally 20 years).
Designability. For the requirements of various performances (electrical, physical, chemical, mechanical, etc.) of PCB, PCB design can be realized through design standardization, etc., with short time and high efficiency.
Productivity. With modern management, standardization, scale (quantity) and automation can be carried out to ensure the consistency of product quality.
Testability. A relatively complete t method, test standard, various t equipment and instruments are established to test and identify that qualification and service life of PCB product.
Rigid circuit board function:
After the electronic equipment adopts printed boards, due to the consistency of similar printed boards, the error of manual wiring is avoided, and the automatic insertion or mounting, automatic soldering and automatic detection of electronic components can be realized, thus ensuring the quality of electronic equipment, improving labor productivity, reducing cost and facilitating maintenance.
Difference between flexible circuit board and rigid circuit board:
There are similarities and differences between rigid circuit board and flexible printed circuit board before. For flexible printed circuit board, the application of rigid circuit boards is more extensive. Because rigid circuit boards appeared earlier, most of the design elements of rigid circuit boards have been applied in the design of flexible printed circuit board. So what is the difference between rigid circuit boards and those before flexible printed circuit board?
1. Current carrying capacity of conductor: Compared with rigid circuit board, the heat dissipation performance of flexible printed circuit board is relatively poor, so it is necessary to provide sufficient conductor width. Considering the heat dissipation of flexible printed circuit board, it is necessary to give extra width or spacing to the wires.
2. Shape: In general, rectangle will be chosen, which can save the base material. There should be enough free margins near the edge. If it is a sharp inner corner, it may cause tearing of the plate. Therefore, the smaller wire width and spacing should be minimized as much as possible, and the transition must be as smooth as possible. Sharp corners will naturally concentrate stress and lead to wire failure.
3. Flexibility: the flexibility of a rigid circuit board is certainly inferior to that of a flexible circuit board. For a large number of bending cycles, the flexible circuit board has better performance.
