PCB (Printed Circuit Board), also known as printed circuit board in Chinese, is an important electronic component, a support of electronic components, and a carrier for electrical connection of electronic components. Because it is made by electronic printing, it is called "printed" circuit board.

After using printed boards for electronic equipment, due to the consistency of similar printed boards, manual wiring errors can be avoided, and electronic components can be automatically inserted or pasted, automatically soldered, and automatically detected, ensuring the quality of electronic equipment, improving labor productivity, reducing costs, and facilitating maintenance.

The reason why PCB can be used more and more widely is that it has many unique advantages, which are summarized as follows.

Producibility: modern management is adopted, and standardization, scale (quantity), automation and other production can be carried out to ensure product quality consistency.

High density: For decades, the high density of printed circuit board can be developed with the improvement of integrated circuit integration and installation technology.

High reliability: Through a series of inspections, tests and aging tests, the PCB can be guaranteed to work reliably for a long time (service life, generally 20 years).

Testability: relatively complete test methods, test standards, various test equipment and instruments have been established to detect and identify PCB product qualification and service life.

Designability: For various performance requirements (electrical, physical, chemical, mechanical, etc.) of PCB, PCB design can be realized through design standardization, normalization, etc., with short time and high efficiency.

Assemblability: PCB products are not only convenient for standardized assembly of various components, but also for automatic and large-scale batch production. At the same time, PCB and various component assembly parts can also be assembled to form larger parts and systems, up to the whole machine.

Maintainability: Because PCB products and various component assembly parts are designed and produced in a standardized way, these parts are also standardized. Therefore, once the system fails, it can be replaced quickly, conveniently and flexibly, and the system can be recovered quickly. Of course, we can give more examples. Such as miniaturization, lightweight, high-speed signal transmission, etc.