A Procedure for Identifying the Failure Mechanism Responsible for a Pin-To-Pin Short Within Plastic Mold Compound Integrated Circuit Packages
Keyword(s):
X Ray
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Abstract Packaging-based short circuits are inherently difficult to analyze due to the unprotected nature of the shorting material in the package. A combination of SQUID, low-power x-ray and OBIRCH techniques were used in conjunction with parallel grinding to identify the location of the short and reveal it for subsequent characterization. This procedure can reliably identify metal-based shorts in most plastic packaging material.