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contributor authorR. T. P. Lee
contributor authorA. S. Zuruzi
contributor authorS. K. Lahiri
date accessioned2017-05-09T00:09:51Z
date available2017-05-09T00:09:51Z
date copyrightDecember, 2003
date issued2003
identifier issn1528-9044
identifier otherJEPAE4-26225#597_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/128184
description abstractThe results of this study demonstrate the viability of a low cost maskless process for the fabrication of ultra-fine pitch solder bumps. The fabricated solder bump arrays have a pitch and diameter of 120 and 70 μm, respectively. Widely used eutectic 63Sn37Pb and lead-free 95.5Sn3.8Ag0.7Cu solders were used to form the bumps. No solder bridging was observed between adjacent bumps, and the solder bumps exhibited good dimensional uniformity. The solder bump to aluminum (Al) pad bond integrity was found to be excellent, as evidenced by the high stress to failure. The failure mode is predominately Al pad lift-off indicating a robust solder bump-pad joint.
publisherThe American Society of Mechanical Engineers (ASME)
titleMaskless Process for Fabrication of Ultra-Fine Pitch Solder Bumps for Flip Chip Interconnects
typeJournal Paper
journal volume125
journal issue4
journal titleJournal of Electronic Packaging
identifier doi10.1115/1.1604806
journal fristpage597
journal lastpage601
identifier eissn1043-7398
keywordsSolders
keywordsManufacturing
keywordsFlip-chip AND Failure
treeJournal of Electronic Packaging:;2003:;volume( 125 ):;issue: 004
contenttypeFulltext


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