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Test and Inspection Procedures
Inspection and testing are essential steps to ensure the high quality of PCBs and electronic assemblies.
Even with excellent equipment and strict process control, some faults may still occur.
That’s why we inspect the entire project thoroughly before production and offer a range of test procedures tailored to your specific needs.
Our test methods include:
- Flying Test
- Visual Inspection
- AOI Test
- Functional Test
Not all test procedures are required for every order!
Testing is crucial to ensure that only high-quality products are delivered to customers. PCB inspection and testing help identify faults during and after the manufacturing process.
Many things can go wrong on a PCB:
- Components may be misaligned.
- Solder connections may be incomplete.
- Excess solder can bridge circuits and cause shorts.
The model of inspection and testing is specific to each PCB,
and decisions about it are often made during the PCB design phase.
There are various methods by which PCB inspection can be achieved.
Flying Test
This is the very first electrical test before assembly for short and open circuits.
Visual Inspection
Visual inspection involves inspectors manually checking boards or assemblies for defects.
While this method is useful, it can be time-consuming and less accurate than automated options.
AOI Check
Automated Optical Inspection is the preferred method of PCB inspection.
It uses cameras to capture images of the board and compares them to a reference image to detect defects.
Functional Test
Functional testing is essential before integrating boards into final systems. It ensures that the components operate correctly
based on your specifications. Combined with Flying Test, Visual Inspection, and AOI, this step completes a thorough QA process.
Flash Software Service
We offer flashing for microcontrollers, memory chips, programmable logic devices, and more.
Comparison of Defect Detection Capabilities: AOI vs Functional Test
| Defect Type | AOI | Functional Test |
|---|---|---|
| Soldering Defects | ||
| Open circuits | ||
| Solder bridges | ||
| Solder shorts | ||
| Insufficient solder | (not heel of joint) | |
| Excess solder | ||
| Solder quality | ||
| Component defects | ||
| Lifted lead | ||
| Missing component | ||
| Misaligned or misplaced component | ||
| Incorrect component value | ||
| Faulty component | ||
For most orders, our clients receive Flying Test, Visual Inspection, and AOI Check free of charge.
Functional testing is optional and priced based on the complexity of the procedure.
