The basic performance of USB connectors can be roughly divided into three types, namely mechanical performance, electrical performance, and environmental performance. The mechanical performance of a USB connector can be further divided into insertion force and extraction force as long as it is reflected in the insertion and extraction force. The insertion force should be as light as possible to facilitate user use, while the extraction force should be designed to be larger because if the separation force is small, it can easily affect the actual function of the USB connector. Electrical performance includes insulation resistance, electrical strength, and contact resistance. The environmental performance can ensure that the USB connector is heat-resistant, moisture-resistant, vibration resistant, and impact resistant while working. Nowadays, when people look back on those days without USB connectors, they can hardly imagine how they struggled to work in difficult environments. If an electronic device is to be connected to a battery, the wires must be fixed between the two by welding, and the welding must be frequently removed, the battery replaced, and then welded on. This will increase additional costs and labor costs. After having a USB connector, if you want to replace the battery, simply disconnect the USB connector and reconnect it after replacement, which is both convenient and cost-effective!

In our country, the usb connector is often called a connector, plug or socket. it is a component used to connect two active devices. most of the people who contact and use it are Electronic engineering technicians. Many things in our daily lives use USB connectors, such as LCD screens, computer wiring, battery wiring, and most household appliances. In addition, USB connectors are widely used in aviation, national defense, and military systems. The function of a USB connector is very simple, but it is very important. It builds a bridge between the power supply and electronic devices, allowing for the normal and smooth flow of current. The most indispensable component in electronic devices is the USB connector, which is usually installed with multiple USB connectors in one electronic device.

USB connector is applicable to all electronic goods: for example, industrial production electronics, consumer electronics, shipbuilding, electronic communications, diagnosis and treatment or transportation facilities engineering. The course content focuses on specific applications, including raw materials, basic theories of connection and Electronic engineering projects, as well as various connection technologies used for circuit boards and cables, The reason for incorrect regulations on standard detection and different types of USB connectors.