An Investigation Into Ball Grid Array Inspection Techniques
An Investigation Into Ball Grid Array Inspection Techniques
An Investigation Into Ball Grid Array Inspection Techniques
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Figure 32. Detailed microsection<br />
through ball Rl of sample 2,<br />
showing a missing ball.<br />
Figure 33. Detailed microsectioll through<br />
ball L4 of sample 2, showillg lIon-wettillg of<br />
the solder ball OlltOthe pad.<br />
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