• SAC405 lead free solder paste
  • No clean SMT printing process
  • High reliability – Bono test compliant

ECOREL™ FREE 405Y-21 is a No Clean lead free solder paste with high performance chemistry of the ECOREL™ range assuring that the assembled electronics can reach their best reliability, while exposed to challenging humidity and temperature conditions. The 405Y alloy contains some dopants which participate to the reinforcement of the interdendritic zone by a finer dispersion of precipitates, to ensure a better resistance to thermocycling for higher operating temperatures.





  • Chemically inert residue, minimizing the risk of corrosion mechanisms and leakage current
  • Good compatibility with a large range of conformal coatings in the market
  • Bono corrosion test compliant
  • Higher mechanical resistance under harsh environment and high operating temperature, above 130°C


  • Reduces the risk of pre-mature failures & product recall
  • Possible to avoid flux cleaning after reflow (depending on customer specifications)


  • Lead free
  • Halogen free
  • Free of CMR containing substances


The best process will depend on factors such as operating conditions, equipment, board or component design. Check our product datasheet for info on process recommendations. Be assured, our team is ready to advise and assist you in the implementation of our products.