PCB (Printed Circuit Board), the Chinese name for the printed circuit board, also known as the printed circuit board, is an important electronic component, is the electronic components of the support body, is the electronic components of the electrical connection carrier. Because it is the use of electronic printing technology, it is called "printed" circuit board.
Development
Printed circuit boards have evolved from single-layer to double-sided, multilayer and flexible, and are still maintaining their respective trends. As a result of the continuous development to high precision, high density and high reliability, and constantly reduce the size, reduce costs and improve performance, so that the printed circuit board in the future development of electronic equipment engineering, still maintains a strong vitality.
Summary of domestic and foreign on the future of printed circuit board production and manufacturing technology development trend of the discussion is basically the same, that is, to high-density, high-precision, fine aperture, fine wire, fine pitch, high reliability, multilayer, high-speed transmission, lightweight, thin direction, in the production of production at the same time to improve productivity, reduce costs, reduce pollution, to adapt to the direction of the development of multi-multi-species, small batch production.
The level of technological development of printed circuits, generally to the printed board line width, aperture, board thickness / aperture ratio as a representative.
Expanded Information:
Features
The reason why PCBs have been increasingly widely used because it has many unique advantages, summarized as follows.
1, can be high-density. Over the past decades, the high density of printed circuit boards can be developed with the integrated circuit integration and mounting technology advances.
2, high reliability. Through a series of inspection, testing and aging tests can ensure that the PCB long-term (life, generally 20 years) and work reliably.
3, designability. PCB various performance (electrical, physical, chemical, mechanical, etc.) requirements, can be standardized through the design of standardization, specification, etc. to achieve the design of printed circuit boards, short time, high efficiency.
4, producible. The use of modern management, standardization, scale (volume), automation and other production to ensure product quality consistency.
5, testability. The establishment of a more complete test methods, test standards, a variety of test equipment and instruments to detect and identify PCB product qualification and service life.
6, can be assembled. PCB products not only facilitate the standardization of various components for assembly, but also automation, large-scale mass production. At the same time, PCB and a variety of components assembly parts can also be assembled to form larger parts, systems, until the whole machine.
7, maintainability. As PCB products and a variety of components assembly parts are standardized design and large-scale production, therefore, these parts are also standardized. Therefore, once the system fails, can be fast, convenient, flexible replacement, quickly resume service system work. Of course, more examples can be given. Such as making the system miniaturization, lightweight, high-speed signal transmission, and so on.
Reference:
Baidu Encyclopedia -PCB