Relationship among PCB, SMT, PCBA

PCB (Printed circuit board) is component carrier for PCBA products.

SMT (Surface Mount Technology) is a technology to assemble components on PCB surface.

PCBA (Printed Circuit Board Assembly) is a finished product after SMT or DIP (Dual In-line Package) assembly technology.

The relationship among PCB, SMT, PCBA is carrier, assembly technology, finished product (or manufacturing process), which can be shown as below: