- Sep 13, 2017 -
PCB Chinese name for printed circuit board, also known as printed wiring Board, is an important electronic components, is the support of electronic components, electronic components are the carrier of electrical connection. Because it is produced by electronic printing, it is called "printed" circuit board.
Function: The electronic equipment uses the printed board, because of the same kind of PCB consistency, thus avoids the artificial wiring mistake, and may realize the electronic component automatic inserts or pastes, the automatic solder, the automatic inspection, guaranteed the electronic equipment quality, enhances the labor productivity, reduces the cost, and facilitates the maintenance.
Development: PCB developed from single layer to double-sided, multi-layer and flexible, and still maintain their own development trend. Due to the continuous development of high-precision, high-density and high reliability direction, and continuously reduce the volume, reduce costs, improve performance, making the PCB in the future of electronic equipment development projects, still maintain a strong vitality.
The paper reviews the development trend of PCB manufacturing technology at home and abroad, which is basically consistent, that is, to high-density, high-precision, fine aperture, fine wire, fine spacing, high reliability, multi-layer, high-speed transmission, light weight, thin-type direction of development, in production at the same time to improve productivity, reduce costs, reduce pollution, adapt to many varieties, Small volume production direction development. The technical development level of the printed circuit is generally represented by the line width, aperture, thickness/aperture ratio on the printed board.
Features: PCB is more and more widely used, because it has a lot of unique advantages, trichosanthes as follows.
can be high-density. For decades, the high density of PCB has been developed with the improvement of integrated circuit integration and installation technology.
High reliability. Through a series of inspection, testing and aging tests can ensure that the PCB long-term (use, generally for 20) and reliable work.
can be designed. PCB Performance (electrical, physical, chemical, mechanical, etc.) requirements, can be designed through standardization, standardization, etc. to achieve PCB design, short time, high efficiency.
can be productive. The use of modern management, can be standardized, scale (volume), automation and other production, to ensure consistency of product quality.
Testability. Set up a relatively complete test methods, testing standards, a variety of testing equipment and instruments to detect and identify the PCB product eligibility and service life.
can be assembled. PCB products are not only convenient for a variety of components standardized assembly, and can be automated, large-scale production. At the same time, PCB and various components assembly parts can also be assembled to form larger parts, systems, until the machine.
Maintainability。 As PCB products and components are assembled in a standardized design and large-scale production, and therefore, these components are also standardized. Therefore, once the system fails, can quickly, easily, flexibly to replace, quickly restore service system work. Of course, there are more examples. such as the miniaturization of the system, lightweight, high-speed signal transmission and so on.