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2021/02/15

< Product > Low-Temperature Lead-Free Solder with High Impact Resistance

Solving the problem with high Bi Sn-Bi alloys

As electronic products become smaller and thinner and have higher performance, components with lower heatproof temperature have come to be used. Such a tendency is not irrelevant to solder materials, and there has been an urgent need to develop low-melting-point solder materials that can be mounted at a lower temperature than conventional lead-free solder materials. Our fully prepared TempSave B37 P610 D4 not only enables lower temperature mounting but also greatly improves the impact resistance that has been a problem for Sn-Bi low-melting-point solder materials.

(*)BGA diameter: 500 μm; Base material: FR-4; Pad finish: Cu-OSP; Shear speed: 10 mm/sec.

Comparison of the initial conditions
SEM images of fracture section after the ball shear test

In TempSave B37 more of the crack propagation is through the ductile matrix than the brittle Bi phase so it is more resistant to failure in impact loading

Effect of Ageing
Ball shear test results

TempSave B37 maintains its strength and ductily even after aging at 80˚C/ 100hours

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For more information, check our [ Digital Catalogue ].

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