The difference between SMT and DIP(THT)

The difference between SMT and DIP(THT)

Abstract: Our standard processing methods in electronic product processing are smt patch assembly and dip plug-in processing. The two are indispensable, both of which play the role of welding between components and PCB, which shows the importance of smt patch assembly and dip plug-in processing. So what are the main differences between SMT patch assembly and dip plug-in processing? Today, SZTech-SMT will share with you. Hope to bring you some help!

SMT chip assembly

SMT chip assembly refers to surface assembly technology, which is a popular technology and process in the electronic assembly industry. Its basic process includes solder paste printing, patch assembly, reflow soldering, optical inspection, etc.; SMT patch assembly uses chip components, which have high reliability, small size, lightweight, strong vibration resistance, automatic production, high installation reliability, and high pass rate of welding quality. At present, nearly 90% of electronic products are soldered using the SMT chip assembly process.

DIP plug-in processing THT

dip plug-in processing is also called dual-in-line packaging technology. Its basic process includes component molding, plug-in, wave soldering, component leg cutting, repair soldering (post-soldering), board washing, etc.; plug-in processing is to insert the formed component into the corresponding hole position of the PCB board, and then put the plug-in PCB board into the wave soldering conveyor belt.


1. The smt chip assembly is to mount the components on the PCB board through the chip mounter, and then reflow soldering to form an electrical mechanical connection. 95% of the processing procedures are completed by mechanical equipment;

2. The dip plug-in processing technology is after the smt patch assembly process. The dip plug-in is to insert the components into the PCB board hole with the dip structure. The dip plug-in includes a manual plug-in and an AI plug-in. Due to the development of smt, there are relatively few dip plug-in processing components, so many factories generally use assembly line manual plug-in, and the number of employees required is rather large. 30% of its processing procedures are completed by mechanical equipment;

Summary The difference between SMT and DIP(THT)

SMT patch assembly and dip plug-in processing have their characteristics, but the two complement each other to form a complete process of electronic product processing and production. With the rapid development of smt technology, smt chip assembly gradually replaces the trend of dip plug-in processing. However, due to the performance requirements of electronic products, plug-in processing has not been completely replaced, and still plays an important role in the processing of electronic products.

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