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what are the quality control of pcba processing?



The PCBA processing process involves a series of processes such as PCB board manufacturing, PCB incoming component procurement and inspection, SMT chip processing, plug-in processing, program firing, testing, aging, etc. The supply chain and manufacturing chain are long, and any link The defects of the PCBA board will cause the mass quality of the PCBA board to fail, and cause serious consequences. For such a situation, the quality control of PCBA patch processing is a very important quality assurance in electronic processing, so what are the main quality control of PCBA processing?


It is particularly important to hold a pre-production meeting after receiving an order for PCBA processing. It is mainly to analyze the process of PCB Gerber files and submit a manufacturability report (DFM) according to different customer needs. Many small manufacturers do not pay attention to this, but tend to prefer Here. Not only is it prone to poor quality problems caused by poor PCB design, but also a lot of rework and repair work.


2. Purchase and inspection of PCBA incoming components


It is necessary to strictly control the procurement channels of components, and must obtain goods from large traders and original manufacturers, so as to avoid the use of second-hand materials and counterfeit materials. In addition, it is necessary to set up a special PCBA incoming material inspection post to strictly inspect the following items to ensure that the components are fault-free.


PCB: Check the temperature test of the reflow oven, whether the fly-line vias are blocked or leaking, whether the board surface is bent, etc.


IC: Check whether the screen printing is exactly the same as the BOM, and store it at constant temperature and humidity.


Other commonly used materials: check screen printing, appearance, power measurement, etc.