A fan has an electronically commutated external-rotor motor serving to drive it. The motor has an internal stator (20) having a stator lamination stack (64) and a winding arrangement (66; 164, 166, 168, 170) associated with the stack. The internal stator has a central opening (149) for journaling a shaft (42). The fan further has a permanent-magnet rotor (28) separated from the internal stator (20) by a magnetically effective air gap (99). The internal stator (20) has a plastic coating (56, 58) that surrounds the stator windings, forms a bearing tube for journaling the shaft (42), and defines a wall element (62), implemented integrally with the plastic coating (56, 58), forming a compartment or cavity (108) for electrical components (112) of the motor. The plastic coating, bearing tube and compartment are preferably molded in a single working step.