The Benefits of AOI

1. Positioning accuracy

In SMT production , as the size of components shrinks, the positioning accuracy of production and inspection tools becomes more and more important. The rule of thumb for an AOI PCBA system is to have sub-pixel accuracy to ensure that the system can locate small positional deviations that can cause 01005 defects and problems.

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2. Cut costs

Passing the PCBA AOI test in the SMT processing plant can improve the qualification rate of PCB and ultimately reduce the cost.

3. Multiple inspection targets

AOI testing is valid for both board assemblies and PCBs . On the PCB side, it checks for defects including shorts, openings, and insufficient solder. However, it checks several things about PCB assembly, such as component soldering, values, and polarity.

In addition, AOI testing can dynamically increase the contrast of the image, so that it is easy to find various fault conditions in different colors from different angles. Illumination programming Illumination is a key technology to ensure maximum detection range.

5. Network software

Data collection and retrieval is an essential part of any AOI PCBA system. Information may be in the form of a mixture of written output, image collections, databases, or other formats. The basic purpose of most AOI PCBA systems is to collect data, but retrieving data is usually more difficult and depends on how the production line is set up.

6. Excellent flexibility

In addition, AOI PCBA is suitable for cost and need tolerance capability in all stages of smt chip manufacturing process.

What types of defects can be detected during AOI pcb A process?

Surface defects (including nodules and scratches), dimensional defects (including open circuits, solder thinning and short circuits), incorrect components, missing components and improper arrangement of components in Smt production and processing can all be detected by AOI.


Component offset, component polarity, missing or present components, skewed components, flipped components, area defects, insufficient solder paste around leads, missing fill test, lifted leads, solder paste misalignment, and grossly damaged Components are a possible problem with some PCBAs that have components .

Short circuits, line width violations, spacing violations, excessive copper, missing pads, cutouts, improper component placement, PCB board holes (whether vias will pass through the pads).

• What is Automated Optical Inspection (AOI)?

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