1. Circuit board plug-in, tinning, and foot cutting methods 1. Make the board (often find a special board making company to make it, and the drawings are provided by yourself) and clean it. 2. Insert small parts horizontally and vertically, such as 1/4W resistors, capacitors, inductors, and other small-sized components close to the circuit board. 3. Insert large and medium-sized components, such as 470μ electrolytic capacitors and fire cows. 4. Insert ICs, such as chip ICs, which can be soldered in the first step. In principle, the components are arranged in the order of plug-in from low to high and from small to large, and the high and low principle takes precedence over the horizontal size principle. If manual soldering, insert one and solder one at a time. If you pass the furnace, just follow the tin furnace operation guide. Foot cutting can be done by manual shearing or by a special foot cutting machine. The basic process requirement is to just cut off the exposed tin package. If you want to open a factory for large-scale production, it is recommended to read and master the relevant national and industry standards first, otherwise your hard-made products will be ignored. And the process of mastering the standards can also help you formulate and sort the process of making circuit boards. Finally, I strongly suggest that you find an electronics factory to work in and learn some techniques from them. After all, seeing is believing.
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