Impact of package design and materials on reliability for temperature cycling, bend, and drop loading conditions

Autor:	Ahmer Syed, Chang Gyun Ryu, TaeSeong Kim, Eun Sook Sohn, Se Woong Cha, J. Scanlan, Won Joon Kang
Rok vydání:	2008
Předmět:	Materials science Mold Package design Soldering Drop (liquid) medicine Ball (bearing) Electronic packaging Temperature cycling Composite material medicine.disease_cause Test data
Zdroj:	2008 58th Electronic Components and Technology Conference.
DOI:	10.1109/ectc.2008.4550168
Popis:	This paper presents a collection of test data showing how the choice of package design and material can have a different effect on performance depending on the loading conditions. Board level temperature cycling, drop (JESD22-B111), and cyclic bend (JESD22-B113) tests were performed on 0.4 mm ball pitch packages. Factors investigated for this evaluation include mold compound material, mold cap thickness (0.45 vs. 0.7 mm), ball pad finish (NiAu vs. Cu OSP), solder ball composition (SAC305, SAC105, SAC125M, Sn3.5Ag), solder volume (ball vs. bump), package material (RoHS vs Green), and board material (RoHS vs Green). The data presented in this paper indicates that lower silver content solder balls perform better under drop conditions, while temperature cycling reliability suffers as silver content decreases. In addition, mold compound material and thickness, die size, and solder volume have the opposite effect depending on the loading condition. The Green material for test board also showed lower performance than RoHS compliant board material.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::42bfa5f067ed2cd79de057ac25daa533 https://doi.org/10.1109/ectc.2008.4550168 Zobrazit plný text záznamu