Circuit board patch welding

When it comes to circuit board PCBA patch soldering, everyone is familiar with it. With the advancement of the times and technology, more and more circuit boards now use patch soldering components. SMD components are more and more popular for their small size and easy maintenance. But for many people, they are "feared" by SMD components, especially for some beginners, because they think they do not have the ability to solder components, and they feel that it is not as easy to solder and grasp as traditional in-line components. In fact, These worries are completely unnecessary. Because there is not only manual welding but also machine welding, different methods are adopted according to different needs.

At present, there are two main welding methods, the details are as follows:

One is manual soldering. The PCBA patch soldering method is to first tin the pad with an electric soldering iron, then clamp one end of the chip component with tweezers, and use the soldering iron to fix the other end of the component on the corresponding pad of the device. Wait for the solder to cool slightly. Then remove the tweezers, and then solder the other end of the component with a soldering iron.

The second method is machine welding. The method is to make a missing stencil, print the solder paste on the circuit board, and then place the soldered chip components by hand or machine mounting, and finally pass The high-temperature soldering furnace solders the SMD components.

Circuit board, circuit board, PCB board, PCBA patch welding technology in recent years, the development of electronic industry process, you can notice a very obvious trend is reflow soldering technology. In principle, traditional plug-in parts can also be reflow soldered, which is commonly referred to as through-hole reflow soldering. The advantage is that it is possible to complete all solder joints at the same time, which minimizes production costs. However, temperature-sensitive components have limited the application of reflow soldering, whether it is plug-in parts or SMD. Then people turn their attention to soldering. In most applications, selective soldering can be used after reflow soldering. This will be an economical and effective way to complete the soldering of the remaining plug-in parts, and it is fully compatible with future lead-free soldering.