A wide application of power inductors in power electronics is mainly determined by appearance of new components with improved electromagnetic characteristics and compact sizes. When inductor choosing it is recommended to draw attention to such parameters as nominal inductance, working current, frequency, dimensions. TDK develops and produces a few series of components for SMD characterising by low energy consumption, high Q factor and ability to operate at high current values and small sizes. SMD inductors allow sufficiciently to decrease the power dissipation in mobile devices, to increase the effectiveness of a converting in electricity supply. Due to variety of TDK inductor types one can optimally select a component in correspondance with set-up parameters: frequency, signal type, and other important characteristics.