PCB can be widely used because it has many special advantages:

　　A: It can be high-density For many years, the high-density of printed boards has been able to develop correspondingly with the improvement of integrated circuit integration and the advancement of mounting technology.

　　B: High reliability Through a series of technical means such as inspection, testing and aging test, it can ensure that the PCB works reliably for a long time (usually 20 years).

　　C: The designability requirements for various properties of the PCB (electrical, physical, chemical, mechanical, etc.) can be achieved through design standardization and standardization. In this way, the design time is short and the efficiency is high.

　　D: Manufacturability PCB adopts modern management, which can realize standardization, scale (quantity) and automatic production, so as to ensure the consistency of product quality.

　　E: Testability has established a relatively complete test method and test standard. Various test equipment and instruments can be used to detect and appraise the eligibility and service life of PCB products.