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X-Ray machines general questions

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#62387

X-Ray machines general questions | 5 August, 2010

Can anyone give me some insight into what to look for on a used X-Ray machine. Or just any thoughts on using X-Ray inspection. We are getting more and more QFNs and our inspection seems a little subjective. Thanks.

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#62391

X-Ray machines general questions | 5 August, 2010

Smaller and multi-row QFNs will probably require an oblique view/5-axis xray with resolution of at least 1 micrometer and preferably a nanofocus machine. Given the low standoff and small pad size, verifying wetting can be challenging on interior pads.

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