Nihon Superior Releases Video Results for Evaluation of SN100C and SAC305
Superior Co. Ltd., a supplier of advanced soldering materials to the global market, has released a video demonstrating the results of an evaluation comparing the wettability and spreadability of on stranded wire.
The video demonstrates that although SAC305 has a lower melting point, the superiority of SN100C’s wettability and spreadability after melting results in faster total wetting and spreading over SAC305.
In general, wettability is evaluated with zero-cross time using the wetting balance test (JIS Z 3198 or IPC J-STD-003). However, it is recommended to verify the performance of wetting and spreading of solder onto a base material after melting, such as in this evaluation. The total wetting time appears to be a more realistic indication of the true wetting and spreadability of a solder than just the zero-cross time as demonstrated in the video.
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