Cu/Low-k TBGA Glob Top Package Reliability Challenges

被引:0
|
作者
Beng, Lau Teck [1 ]
Teck, Siong Chin [1 ]
Lee, Chu-Chung [1 ]
机构
[1] Freescale Semicond Malaysia Sdn Bhd, Pj 47000, Selangor, Malaysia
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中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Moving into low-k die packaging era, due to much weaker mechanical properties and poorer adhesion of interlayer dielectric, package reliability always poises a challenge to backend assembly process. This is especially critical for the cavity down Tape Ball Grid Array (TBGA) package. This paper discusses the approach taken to identify a feasible combination of material set and also the various process and design aspects that are important to lessen the overall package stress exerted onto the low-k die during reliability stress, primarily during temperature cycle test. Series of evaluations were conducted to derive a proven good solution for 44um fine pitch wire package and for Pb-free requirement.
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页码:294 / 299
页数:6
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