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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41<br />
<strong>Ball</strong> <strong>Grid</strong> <strong>Array</strong> <strong>Inspection</strong> <strong>Techniques</strong><br />
Figure 54. Nicolet perpelldiculllr<br />
trallsmissioll imllge of ,mmple 3 with<br />
(/) missillg blllls (F2, C5), IIoll-wetted pllds<br />
C13, F13, G9, K9, M8, PIO lllld<br />
(2) bridge Pl5. Solder blllls were IIOt<br />
detected lit this mllgllificlltioll.<br />
Figure 55. Detlliled microsectioll through<br />
bllll C13, showillg pllrtilllwettillg of plld.
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