The coupled effects of salt-spray corrosion, electrical current and mechanical load on the electrical and fatigue properties of COG assembly. (November 2016)

• Record Type: Journal Article
• Authors: Li, Fan; Zhang, Wenguo; Gao, Lilan; Gao, Hong
• Is Part Of: Microelectronics and reliability. Volume 66(2016)
• Page Start: 92
• Page End: 97
• Publication Date: 2016-11
• Subjects: COG assembly -- Coupled loads -- Salt-spray corrosion -- Fatigue life -- Electrical property; Electronic apparatus and appliances -- Reliability -- Periodicals; Miniature electronic equipment -- Periodicals; Appareils électroniques -- Fiabilité -- Périodiques; Équipement électronique miniaturisé -- Périodiques; Electronic apparatus and appliances -- Reliability; Miniature electronic equipment; Periodicals; 621.3815
• DOI: 10.1016/j.microrel.2016.10.010
• Languages: English
• ISSNs: 0026-2714

Abstract

Abstract: It is well-known that chip-on-glass (COG) assembly working in the coastal areas is often subjected to the coupled effects of salt-spray corrosion, electrical current and cyclic mechanical loading in service. Therefore, the fatigue life and electrical property of COG assembly undergoing the coupled loads of salt-spray corrosion, electrical current and cyclic mechanical loading have been studied in the present work. It is found that the relative resistance of COG assembly increases with the increase of salt-spray corrosion time. Moreover, the salt-spray corrosion time has a great influence on the resistance variation during the fatigue process. Simultaneously, the fatigue life of the COG assembly decreases with the increasing corrosion time. Finally, Miner's linear damage rules could be used to define the damage of COG assembly caused by the salt-spray corrosion. Highlights: The fatigue life and electrical property of COG assembly undergoing coupled loads were studied. Different salt-spray corrosion time seriously influences the relative resistance change. Fatigue life decreases with corrosion time under the coupled loads. Miner's linear damage rules was used to define damage caused by salt-spray corrosion.