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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<strong>Ball</strong> <strong>Grid</strong> <strong>Array</strong> <strong>Inspection</strong> <strong>Techniques</strong><br />
Figure 46. X-tek perpelldicular trallsmissioll<br />
image of sample 3 .~howillg<br />
(1) missillg ball.~ (F2, C5), lIoll-wetted pads<br />
C13, F13, G9, K9, M8, PIO alld<br />
(2) bridge (P /5/R /5).<br />
Figure 47. X-tek allgled trallsmissioll image<br />
of sample 3 showillg<br />
(I) bridge (P/5/RI5),<br />
(2) 1I01l-wettedpads (M8 ami PIO) alld<br />
(3) solder balls (N6 + others).
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