what is PCB , the difference between PCB and PCBA

We believe that many people are familiar with PCB , and may heard about it in daily life, but they may not know much about PCBA, and may even be confused with PCB. So what is a PCB? How did PCBA evolve? What is the difference between PCB and PCBA?

Let’s take a closer look About PCB

PCB short for Printed Circuit Board, Which plays an important role in the electronics industry, also a carrier for electrical connection of electronic components. PCB has been widely used in the manufacture of electronic product


The unique characteristics of PCB are summarized as follows:

1. High wiring density, small size and light weight, which is conducive to the miniaturization of electronic equipment.

2. Due to consistency of the graphics, the errors during assembly could be prevent, This save a lot of time for maintenance and inspection

About PCBA

PCBA is the abbreviation of Printed Circuit Board Assembly, which means that PCBA passes through the entire manufacturing process of PCB bare board SMT and then DIP plug-in.

Note: SMT and DIP are both the ways to integrate parts on the PCB. The main difference is that SMT does not need to drill holes on the PCB. For DIP, the pins of the parts need to be inserted into the drilled holes.


SMT (Surface Mounted Technology) surface mount technology mainly use for some tiny components on the PCB. The production process is like follow: positioning-solder paste printing-mounting-reflow-inspection.

DIP This is the integration of parts in the form of plug-ins when some parts are large in size ,which are not suitable for SMT. The main production process is: sticking adhesive – plug in – wave soldering,FQC inspection.


The difference between PCB and PCBA From the above introduction, we can know that PCBA generally refers to a process, which can also be understood as a finished product, While PCB refers to a bare board with no components on it.
In general: PCBA is a finished board; while PCB is a just a bare board.

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