What is PCB?
PCB=printed circuit board; The Chinese name is printed circuit board, also known as printed circuit board. It is an important electronic component, the support of electronic components, and the carrier of electrical connections for electronic components. Due to its use of electronic printing technology, it is called a “printed” circuit board.
What is PCBA?
PCBA=assembly of PCB。 Assemble various electronic devices onto circuit boards through surface packaging processes. Next is box assembly, which involves assembling the finished PCB with the casing and other components to form the finished product. That is to say, the entire process of PCB blank board through SMT mounting and DIP plug-in, abbreviated as PCBA. This is a commonly used writing style in China, while the standard writing style in Europe and America is PCB’A, which adds a diagonal dot. PCBA, It’s just a PCB that has been pasted.

What is the difference between PCB and PCBA?
PCB refers to the circuit board, while PCBA refers to the assembly of circuit board plug-ins and SMT processes.
One is finished board and the other is bare board
PCB (Printed Circuit Board) is called “printed circuit board” and is made of epoxy glass resin material. It is divided into 4, 6, and 8 layers according to the number of signal layers, with 4 and 6 layers being the most common. Chips and other surface mount components are attached to the PCB.
PCBA may be understood as a finished circuit board, which means that PCBA can only be considered after all the processes on the circuit board have been completed.
PCBA=Printed Cirruit Board +Assembly。
That is to say, the entire process of PCB blank board through SMT mounting and DIP plug-in, abbreviated as PCBA.
PCB (Printed Circuit Board), short for Printed Circuit Board, usually refers to a conductive pattern made of printed circuits, printed components, or a combination of both on insulating materials according to a predetermined design. The conductive pattern that provides electrical connections between components on an insulating substrate is called a printed circuit. In this way, the finished printed circuit board or printed circuit board is called a printed circuit board, also known as a printed circuit board or printed circuit board.
A standard PCB without any components on top is often referred to as a “Printed Wiring Board (PWB)”.