What is the difference between PCBA and PCB
I wonder if you often hear the word PCB in your daily life? It should not be too unfamiliar, because it covers a wide range of fields. Is PCBA familiar to everyone? Perhaps everyone is not too familiar with it, and some may even be confused with PCB. So today we will understand what is PCB, PCBA. And how does PCBA evolve from PCB? What is the difference between PCB and PCBA?
PCB is the Printed Circuit Board, which is the support of electronic components and the carrier of electrical connection of electronic components. Usually a circuit board without components is called a "PCB", we have introduced it in detail in the previous article.
PCBA is the abbreviation of Printed Circuit Board Assembly, namely PCB and component assembly . In other words, PCBA passes through the empty PCB board SMT and then passes through the entire manufacturing process of the DIP plug-in. It can also be understood as a finished circuit board.
Note: SMT and DIP are both ways to integrate parts on the PCB. The main difference is that SMT does not need to drill holes on the PCB. In DIP, the PIN pins of the parts need to be inserted into the drilled holes.
SMT (Surface Mounted Technology) surface mount technology mainly mount some SMD parts on the PCB. The production process is: PCB board positioning, solder paste printing, components mounting,  reflow and finished inspection.
DIP stands for "plug-in", that is, inserting parts on the PCB board. This is the integration of parts in the form of plug-ins when some parts are large in size and not suitable for placement technology. The main production process is: sticking adhesive, plug-in, inspection, wave soldering, printing and finished inspection
Third, the difference between PCB and PCBA 
1. Conceptually: PCB refers to circuit board, and PCBA refers to circuit board plug-in assembly, SMT process.
2. The difference: PCBA is a finished board and the other is a bare board. PCB (Printed Circuit Board) is called a "printed circuit board", made of epoxy glass resin material, and is classified according to the number of signal layers. It is 2,4, 6, up to 40 layer boards, and 2,4 and 6 layer boards are more common. PCBA can be understood as a finished circuit board, which means that PCBA can only be counted after the processes on the circuit board are completed
3. In terms of process: PCB blank board going through SMT loading, and then going through the entire manufacturing process of DIP plug-in, are referred to as PCBA. The PCB usually refers to a conductive pattern made of printed circuits, printed components, or a combination of the two on an insulating material according to a predetermined design as a printed circuit. The conductive pattern that provides electrical connections between components on an insulating substrate is called a printed circuit. In this way, the printed circuit or the finished board of the printed circuit is called a printed circuit board, also known as a PCB or a printed circuit board.
From the above introduction, we can know that PCBA generally refers to a processing process, which can also be understood as a finished circuit board, which means that PCBA can only be counted after the processes on the PCB board are completed. The PCB refers to an empty printed circuit board with no parts on it.
Generally speaking, PCB is a board without components, that is, bare board; PCBA is a board with components soldered on, that is, a finished board.
So how to efficiently find PCB suppliers for R&D and production?
POE is a good choice.
POE Technology provides OEM production services, including PCB and PCBA prototype to mass production, from design, components procurement, programming, testing, etc. to provide a full set of services to ensure the smooth progress of the project in the production stage! Help solution providers solve the problem of bulk component procurement and improve the efficiency of R&D and production.