An Investigation Into Ball Grid Array Inspection Techniques
An Investigation Into Ball Grid Array Inspection Techniques
An Investigation Into Ball Grid Array Inspection Techniques
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
~esa STM-261<br />
Figure Summary 4.<br />
Figure Machine used<br />
61<br />
62<br />
63<br />
64<br />
65<br />
66<br />
67<br />
Glenbrook<br />
Nicolet<br />
X-tek perpend.<br />
HP Four Pi 50X<br />
Reichert<br />
Reichert<br />
Reichert<br />
Defects<br />
Misalignment<br />
Misalignment<br />
Misalignment<br />
Misalignment<br />
Misalignment<br />
Misalignment<br />
Misalignment<br />
Figure 61. Glenbrook perpendicular<br />
transmission image of sample 4<br />
showing misalignment.<br />
Figure 62. Nicolet perpendicular<br />
transmission image of sample 4<br />
showing misalignment.<br />
5.7. Results for Sample 4:<br />
Sample 4 contains a misaligned BGA.<br />
I...<br />
46