Design Parameters Influening Reliability of CCGA Assembly; a Sensitivity Analysis
Published: |
July 30, 2019 |
Author: |
Amaneh Tasooji, Antonio Rinaldi - Arizona State University, Reza Ghaffarian - Jet Propulsion Laboratory |
Abstract: |
Area Array microelectronic packages with small pitch and large I/O counts are now widely used in microelectronics packaging. The impact of various package design and materials/process parameters on reliability has been studied through extensive literature review. Reliability of Ceramic Column Grid Array (CCGA) package assemblies has been evaluated using JPL thermal cycle test results (-50°/75°C, -55°/100°C, and -55°/125°C), as well as those reported by other investigators. A sensitivity analysis has been performed using the literature data to study the impact of design parameters and global/local stress conditions on assembly reliability. The applicability of various life-prediction models for CCGA design has been investigated by comparing model's predictions with the experimental thermal cycling data. Finite Element Method (FEM) analysis has been conducted to assess the state of the stress/strain in CCGA assembly under different thermal cycling, and to explain the different failure modes and locations observed in JPL test assemblies.... |
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