What Is The Difference between PCB and PCBA?

A PCB (Printed Circuit Board) is a board that electrically connects electronic components using conductive traces, прокладки, and other features etched from copper foil laminated onto a non-conductive substrate. PCB’s can be single sided (one copper layer), double sided (two copper layers), or multi-layer (outer and inner layers). Conductors on different layers are connected with vias (plated-thru. holes). Multi-layer PCB’s allow for much higher component density and design complexity.

A PCBA (Печатная плата в сборе) is the board after all the components and parts have been soldered and installed on the PCB and now can accomplish the electronic function it was designed for. A PCBA usually undergoes reflow furnace heating to establish a mechanical connection between the PCB and the components.