Given the myriad of choices for inductors currently available, properly selecting an inductor for a power converter is not always a simple task for designers of next-generation applications. Beginning with the basic physics behind inductor operations, a designer must determine the ideal inductor based on radiation, current rating, core material, core loss, temperature, and saturation current. This white paper will outline these considerations and provide examples that illustrate the role each of these factors plays in choosing the best inductor for a circuit. The paper also will describe the options available for various applications with special emphasis on new cutting edge inductor product trends from Bourns that offer advantages in performance, size, and ease of design modification.