Failure analysis for the dual input quad NAND fate CD4011 under dormant storage conditions.

Sorensen, Neil Robert

Sandia National Laboratories

关键词: Corrosion;    Missiles;    Testing;    Military Equipment Missile Technology.;    Corrosion And Anti-Corrosives.;   

DOI  :  10.2172/975246
RP-ID  :  SAND2004-4193
RP-ID  :  AC04-94AL85000
RP-ID  :  975246

美国|英语

来源: UNT Digital Library

【 摘 要 】

Several groups of plastic molded CD4011 were electrically tested as part of an Army dormant storage program. For this test, parts had been in storage in missile containers for 4.5 years. Eight of the parts (out of 1200) failed the electrical tests and were subsequently analyzed to determine the cause of the failures. The root cause was found to be corrosion of the unpassivated Al bondpads. No significant attack of the passivated Al traces was found. Seven of the eight failures occurred in parts stored on a preposition ship (Jeb Stuart), suggesting a link between the external environment and observed corrosion.