The DC socket's SMD type means that its interface is realized by using SMD components directly affixed to the printed circuit board, and usually this kind of socket is marked with specifications such as rated current, rated voltage, and so on. This kind of interface is commonly used in electronic products and scenarios such as smart watches, smart wearable devices, DIY electronic projects and embedded systems. SMD DC sockets have the advantages of easy installation and use, high reliability and durability, but it should be noted that before SMD, you need to determine the polarity of the power supply output and the polarity requirements of the device, make sure that the plugs and sockets are matched, insert the positive and negative terminals correctly, and check whether the connection is firm. When replacing the power supply or equipment should be unplugged first to avoid short circuit or electric shock.
