Anyone who knows the types of PCB inspection??

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Anyone who knows the types of PCB inspection??

Post by AuTIsNDoNG » Fri Aug 21, 2020 9:09 am

What inspection should be carried out on PCB before it is released by the manufacturing factory?

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Re: Anyone who knows the types of PCB inspection??

Post by KrisDong » Tue Aug 25, 2020 1:32 am

Well, most PCB manufacturers implement an on-off test on PCBs before they leave the factory in order to make sure all the circuits are correctly connected. Up to now, some advanced manufacturers such as PCBGOGO carry out X-ray inspection to find out some obstacles to etching or lamination. When it comes to the products going through SMT assembly, ICT is usually applied, which calls for ICT test points set during the PCB design phase. As soon as problems occur, a special type of X-ray inspection can be used as well.

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Re: Anyone who knows the types of PCB inspection??

Post by Sheridan » Thu Sep 17, 2020 4:05 am

DRC inspection and DFM inspection
The first is the DRC inspection. DRC inspection is also called design rule inspection, which is used in PCB design software (EDA) to check and discover designs that do not conform to the predetermined design specifications in real-time during the PCB Layout process. It is the starting point to ensure the correctness of the design and meet the conventional design specifications, and it is an indispensable part of the PCB design. Based on the role and purpose of DRC, its inspection items generally do not exceed 100 inspection items.
The second is the DFM inspection. DFM inspection is also called design analysis for manufacturability, which is based on PCB design data through real three-dimensional component models and actual manufacturing process simulation, PCB and PCBA are comprehensively reviewed for manufacturability before manufacturing, and design defects are found in the first time Or insufficient, process difficulties, manufacturing risks, design, and process mismatch factors, etc., to ensure that the design and process capabilities are fully matched, which substantially reduces the number of product trials, saves production costs and improves product reliability.

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