New Method for Equivalent Acceleration of IPC/JEDEC Moisture Sensitivity Levels

Chapter
Part of the Micro- and Opto-Electronic Materials, Structures, and Systems book series (MOEM)

Abstract

In this chapter, the IPC/JEDEC (J-STD-020D) standard that includes the specifications of soak requirements and reflow conditions are reviewed, and the accelerated equivalent moisture conditions recommended by J-STD-020D are described. This recommendation is based on the methodology of the local moisture concentration equivalency, proposed by Shook et al. The underlying theory and experimental validations are illustrated, and the limitations of the existing accelerated moisture sensitivity test are discussed. A new methodology for accelerated moisture sensitivity test is developed based on the equivalency of both the local moisture concentration and the global moisture distribution.

Keywords

IPC/JEDEC J-STD-020D Moisture sensitivity Reflow Accelerated moisture sensitivity/reflow test Local moisture equivalency Ultrathin stacking-die chip scale packages 

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Applied Science & Technologies Research Institute (ASTRI) 5/FPhotonics CenterHong KongPeople’s Republic of China
  2. 2.Department of Mechanical EngineeringLamar UniversityBeaumontUSA

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