Effects of Tg and CTE on Semiconductor Encapsulants
Published: |
July 21, 1999 |
Author: |
Dr. Mark M. Konarski |
Abstract: |
As the role of direct-chip-attachment increases in the electronics industry, the reliability and performance of COB packaging materials becomes an increasing concern. Although many factors influence component reliability, the biggest determinants of performance are often the glass transition temperature (Tg) and the coefficient of thermal expansion (CTE) of the encapsulant or underfill. This paper discusses exactly what these properties are, how they are measured, and why they are important to device-reliability.... |
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