Assembly with one secondary coil for a field device with one inductive interface

A field device, comprising:

• an assembly, including:
• a coil carrier;
• and an assembly circuit arranged on the coil carrier, the assembly circuit including:
• a secondary coil;
• and
• at least one electronic component electrically connected to the secondary coil via conductive lines,
• wherein the coil carrier includes a cylindrical carrier region carrying the secondary coil, where the cylindrical carrier region has a shape adapted to a shape of an interface housing of the field device used to receive the secondary coil,
• wherein the coil carrier includes at least one extension adjoining the cylindrical carrier region thereof, and including the at least one electronic component or including a mounting surface including the at least one electronic component, and wherein the assembly includes contact pins that are connected to the assembly circuit via lines arranged at least in sections on or in the coil carrier and that are encapsulated with plastic or are extrusion-coated with plastic, via which the assembly circuit can be connected to the electronics of the field device;
• electronics connected to the assembly;
• and
• an inductive interface via which the field device can be connected to an inductive interface of a superordinate unit comprising a primary coil, wherein the inductive interface includes the interface housing into which the assembly is inserted in such a way that the field device can be connected to the superordinate unit via the inductive interface of the field device and the inductive interface of the superordinate unit such that the secondary coil of the assembly, together with the primary coil of the inductive interface of the superordinate unit, form a transformer for transmitting data and energy.