Indium Blog

What Is Solder Paste?

  • Flux
  • Indium Corporation
  • Solar
  • Solder
  • Solder Alloys
  • Solder Flux
  • Soldering
  • Solder Paste
  • Solderability
  • Soldering Materials

  • For many in the electronics assembly world solder paste is often treated as a near commodity item. However, from within the walls of a solder paste manufacturer it becomes quite obvious that it is a highly engineered and intricate material.






    The simplest answer to the question “What is solder paste?” is “It is a mixture of powdered solder alloy suspended in a flux (vehicle).” But the real answer is deeper than that very cursory response.






    Later, we will discuss these topics in detail:



    • Alloy


    • Powder


    • Flux


    • Mixing and Metal Loading





    That grey “sludge” that you use for soldering did not come out of a tar pit deep in a jungle somewhere. It is a sophisticated material that requires intelligent engineering and chemistry, equipment and proper handling at all levels of manufacture