There are many types of PCBA, which can be classified according to different criteria, such as assembly method, type of components used, or end use of the product. Some of the most common PCBA types include:
Surface mount technology (SMT)
This assembly method uses surface mount components, which are placed on the surface of the PCB and soldered into place. The surface mount part has no leads and is fixed in place through its main body and a small amount of solder. Surface mount PCBA is usually used for smaller components and is more suitable for high-density applications.
Through hole technology (THT)
This type of PCBA uses through-hole components, which are inserted into the holes on the PCB and soldered into place. The lead of the through-hole element passes through the PCB, hence the name. Because these adhesives are very strong and durable, through-hole PCBA is usually used for more important components and is more suitable for heavy-duty applications.