SDR0604-681KL is an SMD power inductor from the SDR0604 series designed for input/output filtering in DC/DC converters and power supplies for portable communications equipment, camcorders, and LCD TVs. The inductor features a 680 µH inductance at 100 kHz with ±10% tolerance, a ferrite DR core with enameled copper wire, and Ag/Ni/Sn terminals for reliable soldering. It operates over a temperature range of -40°C to +125°C with a maximum temperature rise of 40°C at rated current, and exhibits a quality factor (Q) of 26 at 0.252 MHz with a self-resonant frequency of 3 MHz. The compact package measures 5.8 mm maximum diameter and 4.8 mm profile height, making it ideal for space-constrained applications requiring high-performance power filtering and energy storage in switching power supplies.