The ABRACON AIRD-03-390K is a through-hole drum core power inductor designed for a wide range of applications including power management, DC-DC conversion, and filtering in industrial equipment. It features a 3.9 mH inductance, a DC resistance of 46 mW, a saturation current rating of 11 A, and an allowable ripple current of 4.0 A. The inductor operates within a temperature range of -40°C to +125°C and is marked to include ‘L’ in mH. Its robust design and reliable performance make it suitable for demanding environments.