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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~esa STM-261<br />
Figure 12. Glenbrook perpendicular<br />
transmission image of sample I with<br />
misalignment of some balls and solder paste<br />
.<br />
shadow due to partial reflow.<br />
Figure 13. Higher magnification Glenbrook<br />
transmission image of sample I<br />
with partial reflow.<br />
16<br />
....<br />
~~.~
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