China through hole tht assembly for digital PCBA boards

PCB assembly includes the placement and soldering of various electronic components onto a raw board (unassembled PCB boards).

In THT assembly, PCB fasteners, connectors and cables are usually assembled by hand. On the one hand, this prevents damage to components that have already been soldered on. 

On the other hand, further SMT assebly is often no longer technically possible if both sides of the PCB have already been assembled. The advantage of the THT PCB assembly 

process is the mechanical strength and the possibility to process even very large components.

After the PCB has been assembled, the various components are soldered. This is followed by depanelization and, if required, protective coating. Leesys offers three types of 

depaneling: By roller knife, with the milling machine and cutting with the saw. If necessary, a protective coating can be applied to the printed circuit board by dipping. 

This type of painting is used for high mechanical requirements or high environmental demands.

Finally, the assembled PCB is subjected to various automatic optical inspections (AOI) and functional tests.