Emission Microscopy (EMMI) is an optical fault-localization technique used in semiconductor failure analysis to identify electrically active defects inside integrated circuits. Instead of physically opening individual circuit structures and searching for damage, emission microscopy detects extremely weak light generated while a semiconductor device is electrically operating or biased.
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Scanning Acoustic Microscopy (SAM) is a non-destructive imaging technique widely used in semiconductor failure analysis to inspect structures and interfaces hidden inside IC packages. Unlike optical microscopy, which relies on visible light, or X-ray inspection, which relies primarily on differences in material density and X-ray absorption, SAM uses high-frequency acoustic waves. This
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Finding the right semiconductor failure analysis lab often depends less on the laboratory’s name and more on whether it has the equipment and technical expertise required for your specific failure. A package delamination problem may require Scanning Acoustic Microscopy. A suspected interconnect defect may require FIB cross-sectioning and SEM inspection. Leakage
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Many important semiconductor package defects are completely hidden from optical inspection. A solder ball can contain a void. A bond wire can be broken inside an encapsulated package. A die-attach layer may contain large areas of voiding. A package substrate can contain an open trace, and an advanced package may have
Read MoreScanning Electron Microscopy (SEM) is one of the most important imaging techniques used in semiconductor failure analysis. While optical microscopes remain extremely useful for initial inspection, many semiconductor defects are simply too small to characterize adequately with visible-light microscopy. SEM uses a focused beam of electrons rather than light, allowing engineers
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Many semiconductor failure-analysis techniques require direct access to structures that are hidden inside an IC package. The semiconductor die, bond pads, bond wires and other critical components may be completely covered by epoxy molding compound or other packaging materials. Before these structures can be examined using techniques such as optical microscopy, emission
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