The DRQ127-4R7-R is a surface mount Shielded Inductor/Transformer with four sizes of shielded drum core. This DRQ series dual winding inductor can be used as either a single inductor or in coupled inductor/transformer applications (1:1 turns ratio). Windings can be connected in series or parallel, offering a broad range of inductance and current ratings. It supports ±20% inductance tolerance.