Effect of intermetallic compound layer thickness on the shear strength of 1206 chip resistor solder joint.

Journal article


Bernasko, Peter K., Mallik, Sabuj and Takyi, Gabriel 2015. Effect of intermetallic compound layer thickness on the shear strength of 1206 chip resistor solder joint. Soldering & Surface Mount Technology. https://doi.org/10.1108/SSMT-07-2013-0019
AuthorsBernasko, Peter K., Mallik, Sabuj and Takyi, Gabriel
Abstract

Purpose – The purpose of this paper is to study the effect of intermetallic compound (IMC) layer thickness on the shear strength of surface-mount component 1206 chip resistor solder joints. Design/methodology/approach – To evaluate the shear strength and IMC thickness of the 1206 chip resistor solder joints, the test vehicles were conventionally reflowed for 480 seconds at a peak temperature of 240°C at different isothermal ageing times of 100, 200 and 300 hours. A cross-sectional study was conducted on the reflowed and aged 1206 chip resistor solder joints. The shear strength of the solder joints aged at 100, 200 and 300 hours was measured using a shear tester (Dage-4000PXY bond tester). Findings – It was found that the growth of IMC layer thickness increases as the ageing time increases at a constant temperature of 175°C, which resulted in a reduction of solder joint strength due to its brittle nature. It was also found that the shear strength of the reflowed 1206 chip resistor solder joint was higher than the aged joints. Moreover, it was revealed that the shear strength of the 1206 resistor solder joints aged at 100, 200 and 300 hours was influenced by the ageing reaction times. The results also indicate that an increase in ageing time and temperature does not have much influence on the formation and growth of Kirkendall voids. Research limitations/implications – A proper correlation between shear strength and fracture mode is required. Practical implications – The IMC thickness can be used to predict the shear strength of the component/printed circuit board pad solder joint. Originality/value – The shear strength of the 1206 chip resistor solder joint is a function of ageing time and temperature (°C). Therefore, it is vital to consider the shear strength of the surface-mount chip component in high-temperature electronics.

Purpose

– The purpose of this paper is to study the effect of intermetallic compound (IMC) layer thickness on the shear strength of surface-mount component 1206 chip resistor solder joints.

Design/methodology/approach

– To evaluate the shear strength and IMC thickness of the 1206 chip resistor solder joints, the test vehicles were conventionally reflowed for 480 seconds at a peak temperature of 240°C at different isothermal ageing times of 100, 200 and 300 hours. A cross-sectional study was conducted on the reflowed and aged 1206 chip resistor solder joints. The shear strength of the solder joints aged at 100, 200 and 300 hours was measured using a shear tester (Dage-4000PXY bond tester).

Findings

– It was found that the growth of IMC layer thickness increases as the ageing time increases at a constant temperature of 175°C, which resulted in a reduction of solder joint strength due to its brittle nature. It was also found that the shear strength of the reflowed 1206 chip resistor solder joint was higher than the aged joints. Moreover, it was revealed that the shear strength of the 1206 resistor solder joints aged at 100, 200 and 300 hours was influenced by the ageing reaction times. The results also indicate that an increase in ageing time and temperature does not have much influence on the formation and growth of Kirkendall voids.

Research limitations/implications

– A proper correlation between shear strength and fracture mode is required.

Practical implications

– The IMC thickness can be used to predict the shear strength of the component/printed circuit board pad solder joint.

Originality/value

– The shear strength of the 1206 chip resistor solder joint is a function of ageing time and temperature (°C). Therefore, it is vital to consider the shear strength of the surface-mount chip component in high-temperature electronics.

KeywordsIntermetallic compounds (IC); Soldering; Solder joint
Year2015
JournalSoldering & Surface Mount Technology
PublisherEmerald
ISSN09540911
Digital Object Identifier (DOI)https://doi.org/10.1108/SSMT-07-2013-0019
Web address (URL)http://hdl.handle.net/10545/622569
hdl:10545/622569
Publication dates02 Feb 2015
Publication process dates
Deposited07 Apr 2018, 11:14
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Archived with thanks to Soldering & Surface Mount Technology

ContributorsUniversity of Greenwich and Kwame Nkrumah University of Science and Technology
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