Printed circuit board

by:Rocket PCB     2020-08-06
PCB is the abbreviation of Printed Circuit Board. It is called Printed Circuit Board when translated into Chinese. Because it is made by electronic printing, it is called 'Printed' Circuit Board. PCB is an important electronic component in the electronic industry, is the support of electronic components, and is the carrier of electrical connection of electronic components. PCB has been widely used in the production and manufacture of electronic products. Its unique characteristics are summarized as follows: 1. High wiring density, small volume and light weight, it is beneficial to the miniaturization of electronic equipment. 2. Due to the repeatability and consistency of the graphics, errors in wiring and assembly are reduced, and the maintenance, debugging and inspection time of the equipment are saved. 3. It is conducive to mechanized and automated production, improving labor productivity and reducing the cost of electronic equipment. 4. The design can be standardized to facilitate interchange. PCBA is the abbreviation of Printed Circuit Board Assembly, that is to say, PCBA is the whole process of PCB empty Board SMT and DIP plug-in. Note: SMT and DIP are both ways to integrate parts on PCB. The main difference is that SMT does not need to drill holes on PCB, and DIP needs to insert the pin pin of parts into the drilled holes. SMT ( Surface Mounted Technology) Surface Mount Technology mainly uses the mount machine to mount some miniature parts to PCB board. Its production process is: PCB board positioning, printing solder paste, mount machine mounting, over-reflow oven and manufacturing inspection. DIP is the 'plug-in', that is, to insert parts into the PCB version. Some parts are large in size and are not suitable for integrating parts in the form of plug-ins when mounting technology. Its main production processes are: adhesive backing, plug-in, inspection, wave soldering, plate brushing and manufacturing inspection. From the above introduction, we can know that PCBA generally refers to a processing flow, which can also be understood as a finished circuit board, and PCBA can only be counted after all the processes on the PCB board have been completed. The PCB refers to an empty printed circuit board with no parts on it. In general, PCBA is a finished Board; PCB is bare board.
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