Sn-based alloy plated steel sheet

An Sn-based alloy plated steel sheet comprising:

• a steel sheet;
• a composite plating layer formed on at least one side of the steel sheet and including an Fe—Ni—Sn alloy layer and an island-shaped Sn layer located on the Fe—Ni—Sn alloy layer;
• and
• a coating layer formed on the surface of the composite plating layer and containing zirconium oxide and tin oxide,
• wherein the composite plating layer contains, based on % by mass, from 2 mg/m2 to 200 mg/m2 of Ni in terms of metal Ni converted amount and from 0.1 g/m2 to 10 g/m2 of Sn in terms of metal Sn converted amount,
• a content of the zirconium oxide in the coating layer is from 0.2 mg/m2 to 50 mg/m2 in terms of metal Zr amount, and
• a peak position of binding energy of Sn3d5/2 according to X-ray photoelectron spectroscopy of the tin oxide in the coating layer is 1.6 eV or higher than a peak position of binding energy of the metal Sn.