A surface mount inductor comprising: a drum core comprising a spool provided with collars (22, 23), the collars comprising an upper collar and a lower collar provided on opposite ends of the spool; a coil wound around the spool; a pair of metal terminals (50a, 50b) adhered to a lower surface of the lower collar; and a ring core arranged on an outer periphery of the drum core, wherein each of the metal terminals (50a, 50b) comprises a plurality of tongues (52, 53, 54) projecting outwardly in different peripheral directions of the lower collar, at least two of the plurality of tongues (52, 53, 54) respectively comprise side end surfaces (522, 532); and wherein the at least two of the plurality of tongues (52, 53, 54) abut against the lower end surface of the ring core, the surface mount inductor characterised in that: the ring core is provided with projected portions formed by stepped sections (331, 341) which form lower end surfaces therebetween; at least two of the plurality of tongues (52, 53, 54) respectively further comprise stepped sections (521, 541) abutting against an outer edge of the lower collar of the drum core; and the at least two of the plurality of tongues (52, 53, 54) provided on the metal terminals (50a, 50b) sandwich the projected portions between the respective side end surfaces (522, 532) of the adjacent pair of tongues. a drum core comprising a spool provided with collars (22, 23), the collars comprising an upper collar and a lower collar provided on opposite ends of the spool; a coil wound around the spool; a pair of metal terminals (50a, 50b) adhered to a lower surface of the lower collar; and a ring core arranged on an outer periphery of the drum core, wherein each of the metal terminals (50a, 50b) comprises a plurality of tongues (52, 53, 54) projecting outwardly in different peripheral directions of the lower collar, at least two of the plurality of tongues (52, 53, 54) respectively comprise side end surfaces (522, 532); and wherein the at least two of the plurality of tongues (52, 53, 54) abut against the lower end surface of the ring core, the surface mount inductor characterised in that: the ring core is provided with projected portions formed by stepped sections (331, 341) which form lower end surfaces therebetween; at least two of the plurality of tongues (52, 53, 54) respectively further comprise stepped sections (521, 541) abutting against an outer edge of the lower collar of the drum core; and the at least two of the plurality of tongues (52, 53, 54) provided on the metal terminals (50a, 50b) sandwich the projected portions between the respective side end surfaces (522, 532) of the adjacent pair of tongues. the ring core is provided with projected portions formed by stepped sections (331, 341) which form lower end surfaces therebetween; at least two of the plurality of tongues (52, 53, 54) respectively further comprise stepped sections (521, 541) abutting against an outer edge of the lower collar of the drum core; and the at least two of the plurality of tongues (52, 53, 54) provided on the metal terminals (50a, 50b) sandwich the projected portions between the respective side end surfaces (522, 532) of the adjacent pair of tongues.