Features

• Halogen-free is also available.
• The equivalent profile of M705 (SAC305) can be applied to M40-LS720V.
• Joint reliability of Sn-Cu solder is enhanced through the addition of materials such as Ag, Bi and/or Ni.

Evaluation on chip resistors

Comparison of microstructure

Joint interface reaction control technology

Joint interface structure is refined by the replacement of Ni with Cu, which enhances joint strength