Abstract
Abstract This article describes how Focused Ion Beam (FIB) milling methodology enhances the capability of package-level failure analysis on flip-chip packages by eliminating the artifacts induced by using conventional mechanical techniques. Dual- Beam Focused Ion Beam (DB FIB) cross sections were successful in detecting failure mechanisms related either to the die/C4 bump or package defect inside the organic substrate. This paper outlines detailed sample preparation techniques prior to performing the DB FIB cross-sections, along with case studies of DB FIB cross-sections.
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