Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/72454
Title: Acoustic microscopy reveals IC packaging hidden defects
Authors: Ong, S.H. 
Tan, S.H. 
Tan, K.T.
Issue Date: 1997
Source: Ong, S.H.,Tan, S.H.,Tan, K.T. (1997). Acoustic microscopy reveals IC packaging hidden defects. Proceedings of the Electronic Technology Conference, EPTC : 297-303. ScholarBank@NUS Repository.
Abstract: This paper highlights the possibilities of non-destructive techniques such as high frequency ultrasonic to find internal defects and discontinuities in plastic-packaged IC's. C-scan, B-scan, through-scan and signal polarity techniques were employed. These methods can complement each other in enhancing the interpretation of the scanning images. Case studies of detecting delamination between layers, porosity's, disbonds, pop-corn effect and even die crack when they are well oriented towards the ultrasonic beam will be presented in this paper. In addition, electrical overstress causing localized carbonized mold compound at bond wires and/or melted metallization on the die surface can be detected.
Source Title: Proceedings of the Electronic Technology Conference, EPTC
URI: http://scholarbank.nus.edu.sg/handle/10635/72454
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