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Are Sintered Silver Joints Ready for Use as Interconnect Material in Microelectronic Packaging?
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Are Sintered Silver Joints Ready for Use as Interconnect Material in Microelectronic Packaging?
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Journal Article
Are Sintered Silver Joints Ready for Use as Interconnect Material in Microelectronic Packaging?
2014
Overview
Silver (Ag) has been under development for use as interconnect material for power electronics packaging since the late 1980s. Despite its long development history, high thermal and electrical conductivities, and lead-free composition, sintered Ag technology has limited market penetration. This review sets out to explore what is required to make this technology more viable. This review also covers the origin of sintered Ag, the different types and application methods of sintered Ag pastes and laminates, and the long-term reliability of sintered Ag joints. Sintered Ag pastes are classified according to whether pressure is required for sintering and further classified according to their filler sizes. This review discusses the main methods of applying Ag pastes/laminates as die-attach materials and the related processing conditions. The long-term reliability of sintered Ag joints depends on the density of the sintered joint, selection of metallization or plating schemes, types of substrates, substrate roughness, formulation of Ag pastes/laminates, joint configurations (i.e., joint thicknesses and die sizes), and testing conditions. This paper identifies four challenges that must be overcome for the proliferation of sintered Ag technology: changes in materials formulation, the successful navigation of the complex patent landscape, the availability of production and inspection equipment, and the health concerns of Ag nanoparticles. This paper is expected to be useful to materials suppliers and semiconductor companies that are considering this technology for their future packages.
Publisher
Springer US,Springer,Springer Nature B.V
Subject
/ Characterization and Evaluation of Materials
/ Chemistry and Materials Science
/ Cross-disciplinary physics: materials science; rheology
/ Electronics and Microelectronics
/ Exact sciences and technology
/ Joints
/ Microelectronic fabrication (materials and surfaces technology)
/ Nanoscale materials and structures: fabrication and characterization
/ Optical and Electronic Materials
/ Other topics in nanoscale materials and structures
/ Physics
/ Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
/ Silver
