Preparation of Environmental Protection and High Efficiency Lead-Free Solder Paste

The components of the flux are optimized and the environmental friendly flux withexcellent comprehensive performance is prepared. Then the composition of the solder paste isoptimized to prepare the SMT environmental protection and high efficient lead-free solder paste, andits performance is studied. The results show that the storage stability, printability, weldability andenvironmental protection of the SMT environmental protection and high efficient lead-free solderpaste are good, and the reliability is high. The related technical indexes have reached or superior tothe commercial solder paste, and have reached the commercial level initially.