Application of electronic equipment power supply terminals has become a trend, and power supply terminals of the device itself is gradually increasing, and can carry more power. With larger volume terminals, their importance in terms of device features the more and more important, and also in terms of ensuring product characteristics played an increasingly important role.
　　Continuous improvement of the circuit board technology enables terminals can carry current panel mounted improved a lot, has exceeded the limit 110A, far more than the level of the previous product, which makes the design process in which the power supply wiring in the end use terminal to meet the system requirements become more complex issue. Furthermore, the method to measure the performance parameters are different in different regions, there are considerable differences even nominal parameters given in the same product as well. Therefore, in order to ensure long-term reliability and low cost, to understand these differences it is very important.
　　Engineers also have to consider another often overlooked factor, that is, considering the marketing aspect. Typically, the terminals are visible for the user, so the marketing department is often desirable product appearance can match the color and style of the entire system.
　　The following detailed description about the important factors affecting the choice of terminals.
　　1. The form factor
　　Although the "power supply terminals" The name does not sound pretty, but many companies believe it in terms of appearance and affinity users have played an important role. Power supply terminals must be convenient on-site installation, because they are often mounted on the front panel is easy to see the product. Thus, marketers often want the appearance of power terminal products have a say. But often we encounter this situation: engineers design products meet the requirements of all mechanical and electrical parameters, but is not satisfied with sales requirements have to be changed. If this happens at the end of the design cycle (often marketing department first saw the prototype of the time), then a heated debate is difficult to avoid, and could lead to rising costs and delivery delays. In many industrial control systems, terminals are often one of the few parts of the few technicians need extra attention. Although its user interface is relatively simple (mainly screws), but it is very important for the normal operation of the device is.