Au(80)Sn(20)-solder
Interfacial Reactions in Sn 57Bi 1Ag Solder Joints with Cu and Au Metallization
... the solder paste was applied on the Cu substrate with a thickness of approximately 60 ...thin Sn-57Bi-1Ag solder coating ...the solder paste was cleaned in an ultrasonic bath with alcohol and ...
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Reactivity between Sn Ag Solder and Au/Ni Co Plating to Form Intermetallic Phases
... measured by image analyses of the back scattered electron images. At first for the reaction layers, although there are slight differences in their growth kinetics, the growth of reaction layers did not play a very ...
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Influence of the Interfacial Reaction Layer on Reliability of CSP Joints Using Sn 8Zn 3Bi Solder and Ni/Au Plating
... the solder layer both in the as-soldered condition and also after ...the solder/Ni-P plating interface was obtained by the interfacial reaction between Ni-P plating and solder than was obtained for ...
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Effect of Au addition on Microstructural and Mechanical Properties of Sn Cu Eutectic Solder
... of Sn–Cu solder alloys with Au on ...increasing Au content, this peak becomes broader and shifting towards lower ...For Sn– ...the Au addition to Sn–Cu binary alloy, the ...
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Sn Ag Based Solders Bonded to Ni P/Au Plating: Effects of Interfacial Structure on Joint Strength
... the Sn-Ag-Cu solder joints was found to be higher than that of the Sn-Ag solder joints after both the reflow-soldering and aging ...without Au coating (and those with 50 nm Au ...
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Microstructural Evolution of Joint Interface between Eutectic 80Au 20Sn Solder and UBM
... The eutectic 80Au–20Sn solder alloys were prepared from Au and Sn metals of purity higher than 99.9 percent. The samples were encapsulated in quartz tubes under vacuum, and then melted and ...
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Melting and Joining Behavior of Sn/Ag and Sn Ag/Sn Bi Plating on Cu Core Ball
... using Au/Ni (a) electroplated and (b) electrolysis- plated Cu pads as a function of heat exposure time at 423 ...each solder, but at least the changes of the load during high- temperature storage indicate ...
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Microstructure and Strength of Sn Bi Coated Sn 3 5 mass%Ag Solder Alloy
... the Sn-Bi thickness on the shear strength. The electroplated solder balls were placed on the substrate, and were air-reflowed at 473, 493, and 523 ...the solder balls used were 300 mm, and 500 mm, ...
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Properties of Solder Joints Using Sn Ag Bi In Solder
... Sn-3.5Ag-0.5Bi-3In, Sn-3Ag-2.5Bi-2.5In, Sn-3.5Ag-0.5Bi-8In, and Sn-8Zn-3Bi, with Sn-37Pb used as the reference solder(all compositions are expressed in mass ...Each solder ...
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Transmission Electron Microscopy of Interfaces in Joints between Pb Free Solders and Electroless Ni P*
... of solder joint of Sn–Ag/Ni–P to UBM, at a low magnification, and concentration profiles of Sn, Ni, Ag and P, obtained at points 1–9 by EDX analysis, across the joint, ...magnification. Au was ...
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Effect of Isothermal Aging on Ball Shear Strength in BGA Joints with Sn 3 5Ag 0 75Cu Solder
... in solder to brittle fracture (i) at the interface between solder and intermetallic compound, (ii) within the intermetallic compound and (iii) between two intermetallic compound ...a solder ball with ...
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Flip Chip Bump Formation of Sn 1 8Bi 0 8Cu 0 6In Solder by Stencil Printing
... of solder paste, ...investigated. Sn–3.5%Ag, Sn–37%Pb and Sn–36%Pb–2%Ag were selected as references for the ...The solder pastes were printed on the under bump metallization (UBM) of a ...
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Anomalous Creep in Sn Rich Solder Joints
... example Sn-rich solders that have become candidates for use in Pb-free solder ...and Sn–10In–3.1Ag, used in thin joints between Cu and Ni/Au metallized ...dominant Sn constituent. ...
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Microstructures Variations of Sn 9Zn 1Al and Sn 8Zn 3Bi Solder Pastes with Sn 3 8Ag 0 7Cu Solder Balls on OSP PCBs after Thermal Cycling Test
... the solder joint strengths must be understood before being applied to a manufacturing ...Pb-free solder pastes of Sn8Zn3Bi (SZB) and Sn9Zn1Al (SZA) have been used to assemble 0603 passive components on ...
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Thermodynamics Aided Alloy Design and Evaluation of Pb free Solders for High Temperature Applications
... of Sn–Sb, Bi–Ag and Au–Sn–Sb alloys were selected to replace the Pb–5Sn solder for step soldering used in MCM and they were investigated in terms of melting be- havior, electrical resistivity, ...
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Reactive Diffusion between Ag–5Pt Alloy and Sn at Solid State Temperatures
... a Au layer. If the Cu-base alloy plated with the Au layer is interconnected with a Sn-base solder alloy, Au–Sn com- pounds are formed at the interconnection during soldering and ...
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BGA Jointing Property of Sn 8 8 mass%Zn and Sn 8 0 mass%Zn 3 0 mass%Bi Solder on Electroless Nickel Phosphorus/Immersion Gold Plated Substrates*
... mounting. Solder ball of conven- tional Sn–Pb alloy has been used to connect BGA package on printed circuit board ...of solder as surface finishing for PCB of solder ball ...immersion Au ...
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Influence of Noble Metal Coating on Wettability of Copper Substrate by Sn Ag Eutectic Solder
... the solder was 96.5 mass%Sn-3.5 mass%Ag (de- scribed as Sn-Ag ...Cu, Au-coated Cu (described as Au/Cu hereafter), Ag-coated Cu (described as Ag/Cu hereafter), and Pd-coated Cu ...
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Microstructures and Fusing Electrical Current of Microelectronic Sn 9Zn (0 25RE) Solders
... were prepared by melting pure tin, pure zinc and rare earth elements in a high-frequency induction furnace. The chemi- cal composition of the mixed RE is shown in Table 1. The alloy ingots were then remelted and cast ...
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Acetic acid mediated leaching of metals from lead-free solders
... waste acid solution generated during the process is harm- ful to the environment. For the sustainable management of natural resources and to reduce environmental pollu- tion, it is important to develop a simple recycling ...
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