What is X-ray inspection? Learn how X-ray inspection reveals hidden solder joints beneath BGAs and QFNs.
What is X-Ray Inspection?
X-ray inspection is a non-destructive testing method that uses X-rays to make hidden solder joints visible.
X-ray inspection is used where optical systems like AOI reach their limits — for hidden solder joints beneath BGA or QFN packages. X-rays penetrate through the materials and make the solder connections visible.
Process and Application
Modern X-ray systems offer 2D and 3D imaging (CT) with high resolution. This enables detection of voids, solder bridges, head-in-pillow defects or incomplete wetting.
In medical technology and other safety-critical sectors, X-ray inspection of BGAs is part of the standard test scope.
Frequently Asked Questions
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