PCB and PCBA

The current mainstream PCBA assembly is SMT (Surface Mount Technology), which first prints solder paste on the PCB, then mounts the electronic components on the PCB, and then reflows the components through the solder paste.
Pasted on the PCB, there will be some electronic components on the PCB that are relatively heavy or need to withstand external force for insertion and removal (called special-shaped parts or large parts in the industry).

They will be designed as through-hole components, which are plug-ins (DIP), and then The components are soldered to the PCB via wave soldering.
PCBA is basically a finished product, and some factories will produce PCBA for shipment.

The PCB can basically only be regarded as one component. The PCB is an important component of the entire PCBA. It cannot represent the PCBA because electronic parts such as ICs, resistors, capacitors, inductors, and connectors must be welded on the PCB to become a finished product, PCB can only be regarded as a component.

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