Category Archives: Test/Inspection


Sep05
Using 2D X-Ray to Diagnose BGA Solder Void Issues

post on September 5, 2024

This is an X-ray inspection image of an MCU’s BGA soldering that failed after reflow. The owner mentioned that the BGA package was not functioning, but when pressing on the MCU, it would temporarily work again. Since Workingbear didn’t have … Continue reading →

Quality, SMT, Soldering, Test/Inspection     WorkingBear    Views (6,114)     comment (0)
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Aug29
How to Use 2D X-Ray to Identify BGA Issues like Non-Wetting, Cold Solder, and HIP or NWO

post on August 29, 2024

If you’re an SMT engineer, you’ve probably used an X-Ray inspection machine to check the soldering quality of BGAs. But, after looking at the BGA solder balls repeatedly, they all seem to look the same. So, how can you tell … Continue reading →

Quality, SMT, Soldering, Test/Inspection     WorkingBear    Views (7,645)     comment (0)
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Aug01
3D CT X-Ray Non-Destructive 3D Tomography Analysis for PCBA and BGA Failures

post on August 1, 2024

In recent years, the commercial application of 3D CT X-Ray has become increasingly noteworthy. As the technology matures, more companies are investing in its development, making the equipment more affordable, though still not quite at a consumer-friendly price point. Additionally, … Continue reading →

Quality, Reliability, SMT, Soldering, Test/Inspection     WorkingBear    Views (5,755)     comment (0)
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Jul18
Why Do Electronic Products Need Burn-In? What Are Its Pros and Cons? What Is Run-In?

post on July 18, 2024

In the early days, when electronic component design and manufacturing were still developing, the “burn-in” solution was used to screen out defective electronic components and products. This process allowed early-failing products to be identified and eliminated, preventing defective items from … Continue reading →

Process, Quality, Reliability, Test/Inspection     WorkingBear    Views (4,180)     comment (0)
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Jul11
What Is the Purpose of Testing Electronic Products? It’s Like Buying Insurance!

post on July 11, 2024

Workingbear has been in the electronics industry for several years and has noticed an interesting phenomenon. Almost every new manager will ask the same questions when they come on board: “Why do we need to perform ICT (In-Circuit Test) at … Continue reading →

Management, Personal Opinion, Process, Quality, Test/Inspection     WorkingBear    Views (3,371)     comment (0)
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