Innovative tin electrolyte combining high technical standards with significant cost saving potentials

摘要

A new MSA based, fluoroborate-free and foam reduced pure tin electrolyte, Niveostan ™*, has been developed to combine excellent technical performance with significant cost saving potentials. It consists of one additive only which can be easily analyzed by UV. The additive includes already an anti-oxidant to suppress the Sn (IV) formation during processing.The electrolyte provides a unique deposit that exhibits, due to smooth morphology and the large crystal grain size, a lower tendency to whisker formation compared to other electrolytes. In a FIB study this morphology as well as the intermetallic phase creation has been investigated on copper base materials.