PCB, also known as printed circuit board or printed circuit board in Chinese, is an important electronic component that supports electronic components and serves as the carrier for electrical interconnection of electronic components. Due to its use of electronic printing technology, it is called a "printed" circuit board. The printed circuit board is composed of an insulating base plate, connecting wires, and a solder pad for assembling and welding electronic components, which has the dual function of conducting wires and insulating base plates. As an important electronic component, its detection is crucial. The following editor will introduce the knowledge about PCB detection~

Pcb detection project: 1. DFM review of optical boards. 2. Check the consistency between actual components and pads. 3. Generate 3D graphics. 4. PCBA production line optimization. 5. Operation instructions: Automatically generate operation instructions for workers on the production line. 6. Revision of inspection rules 7. Automatic generation of optimized steel plate graphics. 8. Automatically generate AOI and X-ray programs. 9. Check that multiple software formats are supported. 10. Check the BOM and correct related errors, such as spelling errors by the manufacturer. Convert the BOM to software format

Common inspection methods for PCB boards: 1. Manual visual inspection of PCB boards: Using a magnifying glass or calibrated microscope, the operator visually inspects to determine whether the circuit board is qualified and when calibration operations are needed. This is a traditional inspection method. 2. PCB board online testing: By detecting electrical performance, manufacturing defects are identified and components with analog, digital, and mixed signals are tested to ensure they meet specifications. There are several testing methods available, including needle bed testers and flying needle testers. 3. PCB board functional testing: Functional system testing is a comprehensive testing of the functional modules of the circuit board using specialized testing equipment in the middle and end stages of the production line to confirm the quality of the circuit board. 4. Automatic optical inspection: also known as automatic visual inspection, it is based on optical principles and utilizes various technologies such as image analysis, computer, and automatic control to detect and process defects encountered in production. 5. Automatic X-ray examination: Utilize the different absorption rates of different substances to X-ray, perspective the areas that need to be tested, and discover defects. 6. Laser detection system: Use a laser beam to scan printed boards, collect all measurement data, and compare the actual measurement values with the preset qualified limit values. 7. Dimension detection: measure the hole position, length and width, position and other dimensions by using the anime image measuring instrument

PCB testing standard: GB/T 5230-2020 Electrolytic copper foil for printed boards GB/T 38342-2019 Aerospace electronic products - Assembly requirements for printed board assemblies GB/T 14515-2019 Sectional specification for double-sided flexible printed boards GB/T 5489-2018 Printed board drawings GB/T 4588.4-2017 Rigid multilayer printed boards GB/T 12631-2017 Printed board wire resistance testing methods GB/T 33016-2016 Test methods for bonding sheets for multilayer printed boards GB/T 33015-2016 General rules for bonding sheets for multilayer printed boards GB/T 18373-2013 E-glass fiber cloth for printed boards GB/T 29847-2013 Test methods for copper foil for printed boards