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PCB Inspection

17. August 2023
2 minutes reading


PCB inspection is the process of examining and evaluating a printed circuit board (PCB) to identify any errors, deficiencies, or deviations from design specifications. It is a critical part of quality control and ensures that the PCB meets necessary standards and functionality requirements.

Purpose of PCB Inspection

  • Quality Control: PCB inspection ensures that the printed board adheres to high-quality standards and identifies any defects or deficiencies that may affect its performance and reliability.
  • Compliance with Specifications: Inspection ensures that the PCB is in line with desired design specifications and industry standards.
  • Troubleshooting and Prevention: The purpose of inspection is to identify any errors early in the process so they can be corrected before the final product is produced. This reduces the need for costly subsequent repairs.
  • Ensure Proper Function: PCB inspection checks not only component placement and assembly but also the functionality of the PCB. This ensures that the board operates as expected and performs its intended functions.
  • Documentation and Traceability: Inspection involves documenting any found defects and the necessary corrections. This provides traceability in the production process and ensures that all necessary steps are taken to achieve a flawless PCB.


Visual Inspection
Visual inspection involves a thorough examination of the PCB using magnification tools such as microscopes or digital cameras. This helps identify any visible defects, such as soldering errors, shorts, missing components, or damaged traces.

Electrical Inspection
Electrical inspection involves testing and measuring electrical connections and functionality on the PCB. This can include the use of testing equipment such as a multimeter or oscilloscope to verify that all connections are correct and that the electrical components function as expected.

Component Identification
Inspection also involves identifying individual components on the PCB, including their placement, value, and proper assembly. This helps ensure that all components are correctly positioned and oriented, and that there are no errors in component selection.

Functionality Check
Inspection may also encompass testing the functionality of the PCB by applying inputs and observing the resulting outputs. This ensures that the PCB operates correctly and performs the desired functions.

Documentation and Reporting
During the inspection process, it is important to document any observed defects, deficiencies, or issues. This may include creating inspection reports, photos, or video documentation of defects, and a detailed list of actions to be taken to rectify the issues.

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