Effect of Pedestal Temperature on Bonding Strength and Deformation Characteristics for 5N Copper Wire Bonding

Singh, G. and Haseeb, A.S. Md. Abdul (2016) Effect of Pedestal Temperature on Bonding Strength and Deformation Characteristics for 5N Copper Wire Bonding. IEEE/TMS Journal of Electronic Materials, 45 (6). pp. 3244-3248. ISSN 0361-5235

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Official URL: http://dx.doi.org/10.1007/s11664-016-4403-y

Abstract

In recent years, copper has increasingly been used to replace gold to create wire-bonded interconnections in microelectronics. While engineers and researchers in the semiconductor packaging field are continuously working on this transition from gold to copper wires to reduce costs, the challenge remains in producing robust and reliable joints for semiconductor devices. This research paper investigates the effect of pedestal temperature on bonding strength and deformation for 99.999% purity (5N) copper wire bonding on nickel-palladium-gold (NiPdAu) bond pads. With increasing pedestal temperature, significant thinning of the copper ball bond can be achieved, resulting in higher as-bonded ball shear strengths while producing no pad damage. This can be helpful for low-k devices with thin structures, so as to prevent the use of excessive bond force and ultrasonic energy during copper wire bonding.

Item Type: Article
Uncontrolled Keywords: Copper wire bonding; Free air ball; Ball shear strength; Columnar
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 05 Jul 2017 07:10
Last Modified: 17 Oct 2018 00:42
URI: http://eprints.um.edu.my/id/eprint/17446

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