At present, the application of power supply terminals in electronic equipment has become a trend, and the terminal device itself is gradually increasing, and can carry more power. As the terminals become larger, they are becoming more important in terms of device functionality and are playing an increasingly important role in ensuring product features.
Continuously improved circuit board technology allows the panel to install the plug-in terminals can carry a lot of current boost, which makes the design process in the end to use which terminal to meet the system requirements of the problem becomes more complex. In addition, the methods of measuring performance parameters in different regions are different, and even the nominal parameters given by the same product are quite different. Therefore, it is important to understand these differences in order to achieve long-term reliability and to ensure low cost.
Engineers must also consider another often overlooked factor, ie, marketing considerations. Often, plug-in terminals are visible to the user, so the marketing department often expects the product to match the color and style of the entire system in terms of appearance.
The following describes in detail the impact of the terminal selection of important factors.
First, the power handling factors
One of the first considerations is the power handling capability of the device. Simply reading the data sheet does not guarantee accurate comparison data. Engineers must understand how the product performance data listed in the manual is tested. At present, UL, IEC, CSA and DIN and other institutions in determining the terminal product power and performance specifications and there is no uniform standard. Users need to understand the differences between UL and IEC specifications. Made in Europe, the specifications of the terminal products are IEC standard, and UL-based products are manufactured in the United States.
Second, the appearance of factors
Plug-in terminals must be easily installed on site, as they are often installed at the front of the easy-to-see product panel. In this way, marketers often want to have a certain voice on the appearance of the power supply terminal products. Often encounter this situation: engineers designed products meet all the mechanical and electrical parameters, but did not meet the sales requirements and had to change.