SDR0302-391KL is a surface-mount power inductor from the Bourns SDR0302 series designed for input/output filtering in DC/DC converters and power supply applications. It features a 390 µH inductance with ±10% tolerance, a low profile of 2.5 mm, and a ferrite DR core with enameled copper wire construction. The inductor exhibits a quality factor (Q) of 40 at 0.796 MHz, a self-resonant frequency of 5.5 Hz, and a maximum DC resistance of 10.80 O. With a rated RMS current of 0.120 A and saturation current of 0.140 A, it is optimized for low-current, high-inductance applications. This component is ideal for portable communications equipment, camcorders, and LCD TV power supplies where compact size and low inductance values are essential.