Abstract: A surface-treated metal material includes a metal sheet, a plating layer formed on the metal sheet and containing aluminum, magnesium, and zinc, and a composite coating formed on a surface of the plating layer, the composite coating including an organic silicon compound, one or two of a zirconium compound and a titanium compound, a phosphoric acid compound, a fluorine compound, and a vanadium compound, wherein, when a surface of the composite coating is analyzed at a spot size of ?30 ?m using micro-fluorescent X-rays, a maximum value of V/Zn, which is a mass ratio of a V content to a Zn content, is 0.010 to 0.100.

Abstract: A terminal fitted bobbin adapted to be fitted in a pot core so as to form a transformer or inductance element has a structure in which at least one frame provided with a plurality of terminals is formed on a flange and has at least one projection for guiding lead wires. When windings are applied to the bobbin and the bobbin is further fitted in the core, the projection guides the lead wires to be connected to terminals at the ends of the windings so they do not contact the core and is effective in automating the winding operation.