Solder ball
Pb-Free Solder Ball Robustness Comparison under AC and TC Reliability Test
... the solder ball especially on the shear strength and the internal ...the solder ball shear strength and the internal structure, after subjected to the AC stress ...
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Estimation of Solder Ball Collapse Height in Semiconductor Packaging Using Theoretical and Solid Modeling Techniques
... the solder mask opening diameter at 300 µm and . The required solder ball collapse height was around 100 ...the solder ball height was set at an arbitrary ...
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Influence of Shear Height on Shear Strength of Tin Lead Solder Ball Bonding
... the ball composition to the bonding microstructure and the strength because such data can give the information how the reflow have been carried ...the ball bonding has been ...
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Reliability of Solder Joint with Sn Ag Cu Ni Ge Lead Free Alloy under Heat Exposure Conditions
... SACNG solder, the formation phases in the solder grow up to several-micron meters after heat exposure ...the solder ball joint with the SACNG solder and the Cu pad after heat exposure ...
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The Simulation of Shape Evolution of Solder Joints during Reflow Process and Its Experimental Validation
... of solder joints which are related to the change in solder ...Therefore, solder volume has to be a known value. If the solder bump is made by electroplating, solder volume can not be ...
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Joints Soldered on Electroless Ni Au Surfaces Using Cu Containing Flux: Strength, Microstructure and Mechanism of Improvement
... improved solder joint strength for solder ball attachment on electroless Ni–Au surface ...into solder from the plating surface so that the growth of a P-rich layer can be effectively inhibited ...
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Modeling and Mode Shape Extraction of Ball Grid Array Package on Printed Circuit Board Soldered using Lead Free Solder Alloy SAC405
... The ball grid array (BGA) package has become a foremost packaging type in previous years, because of its high capability for the input/output (I/O) ...the solder nuts or pins under the ...of solder ...
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Modeling and Mode Shape Extraction of Ball Grid Array Package on Printed Circuit Board Soldered using Lead Free Solder Alloy – SAC405
... The ball grid array (BGA) package has become a foremost packaging type in previous years, because of its high capability for the input/output (I/O) ...the solder nuts or pins under the ...of solder ...
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Effect of Surface Finishes on Ball Shear Strength in BGA Joints with Sn 3 5 mass%Ag Solder
... of solder ball shear strength was found to be mainly caused by the formation of intermetal- lic compound layers, together with the microstructure coars- ...in solder to brittle fracture (i) at the ...
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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
... SZB solder joint and SAC solder ball on an OSP ...SAC solder ball, as shown in ...SZB solder joint and SAC solder ball on an OSP PCB were smaller than those in the ...
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Shear Fracture Behavior on Ball Grid Arrayed Tin Silver Copper Solder/Pure Copper Pad Joint Interface
... the solder and the electrode locates under the resist ...just solder side as shown in ...the solder mechanical ...solder ball. Furthermore, pull test could not be realistic method ...
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Impact Properties of Lead Free Sn Ag Cu Ni Ge Solder Joint with Cu Electrode
... Sn-Ag-Cu-Ni-Ge solder balls were prepared and ...mass%Cu solder balls were also prepared for ...of solder balls used in this study. The diameter of each solder ball was ...the ...
5
Effect of Isothermal Aging on Ball Shear Strength in BGA Joints with Sn 3 5Ag 0 75Cu Solder
... bulk solder and in the intermetallic ...the ball shear strengths of immersion Au/Ni–P/Cu pads and electroless Ni–P/Cu pads were very ...close. Ball shear strength values of the Cu pads were rela- ...
6
Aging Treatment Characteristics of Shear Strength in Micro Solder Bump
... There were no detected Cu elements up to 600 hours of ag- ing. This means that shear failure occurred inside of the solder not at the UBM multi-layer, which, in turn, suggests that the joint connecting the ...
5
Microstructures and Fusing Electrical Current of Microelectronic Sn 9Zn (0 25RE) Solders
... Both Sn-9Zn and Sn-9Zn-0.25RE solders were used to investigate the effect of RE (rare earth elements) addition on their solidification structures and electrical current properties. The results indicate that adding RE not ...
5
Low temperature solder alloys for ultrasonic soldering of glass
... inhibited solder flow while higher setting delayed solders ...The solder granule was placed on glass surface when surface temperature reached 150 ...8W. Solder granule melted upon contact to the tool ...
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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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Application of Thermal Latent Carboxylic Acid Derivatives to Pb Free Microsoldering
... in solder paste, but without exhibiting good ...and solder alloys, the surface of solder mixed with glutaric acid di(2-propoxyethyl) ester was observed using a scanning electron microscope after ...
6
Welding Path Planning of welding Robot Based on Improved Ant Colony Algorithm
... next solder joint mainly depends on the concentration of pheromones and the distance between the two solder joints, and pheromone concentration and the length of the distance between the solder ...
6
Lead free Solder
... A Sn—Ag—Cu eutectic alloy is modified with one or more low level and low cost alloy additions to enhance high temperature microstructural stability and thermal-mechanical fatigue strength without decreasing ...
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