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What is the difference between PCB and PCBA?

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What is the difference between PCB and PCBA?
What is the difference between PCB and PCBA?

What is the difference between PCB and PCBA?
I believe that many people are familiar with PCB circuit boards, which may be heard frequently in daily life, but may not be familiar with 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 below.
*About PCB*
PCB is the abbreviation of Printed Circuit Board. Translated into Chinese is called printed circuit board. Because it is made by electronic printing, it is called "printing" circuit board. PCB is an important electronic component in the electronics industry, a support for electronic components, and a carrier for electrical connection of electronic components. PCB has been widely used in the manufacture of electronic products, and its unique features are summarized as follows:
1. High wiring density, small size and light weight, which is conducive to miniaturization of electronic equipment.
2, due to the repeatability and consistency of the graphics, reducing wiring and assembly errors, saving equipment maintenance, debugging and inspection time.
3. Conducive to mechanization and automated production, increasing labor productivity and reducing the cost of electronic equipment.
4, the design can be standardized, which is conducive to interchange.
*About PCBA*
PCBA is the abbreviation of Printed Circuit Board +Assembly, which means that PCBA is the whole process of passing the PCB empty board SMT and then passing the DIP plug-in.
Note: Both SMT and DIP are ways to integrate parts on the PCB. The main difference is that SMT does not need to drill holes in the PCB. In DIP, the PIN pin of the part needs to be inserted into the drilled hole.
SMT (SurfaceMounted Technology) surface mount technology, mainly using the placement machine to mount some micro-miniature parts on the PCB, the production process is: PCB board positioning, printing solder paste, placement machine placement, over-reflow oven And made inspection.
DIP is a "plug-in", which is to insert parts on the PCB version, which are integrated parts in the form of plug-ins that are large in size and not suitable for placement technology. Its main production processes are: adhesive backing, inserts, inspection, wave soldering, brushing and inspection.
*The difference between PCB and PCBA*
From the above introduction, it can be known that PCBA refers to a processing flow, which can also be understood as a finished circuit board, and the PCBA can be calculated only after the processes on the PCB are completed. The PCB refers to an empty printed circuit board with no parts on it.
In general: PCBA is a finished board; PCB is a bare board.

Pub Time : 2012-08-18 19:13:19 >> News list
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