AIRD-03-331K is a radial drum core power choke designed for high-current power supply and electronic appliance applications. It features a ferrite core with UL tube and wire wound construction, delivering 330 µH inductance at 1 kHz with 0.1 Vrms test conditions and a tolerance of ±10%. The component exhibits a maximum DC resistance of 0.122 O, a saturation current of 7.1 A, and a temperature rise current rating of 4.5 A, making it suitable for demanding power conversion circuits. With a compact radial drum form factor measuring 21.0 × Ø28.0 mm and pin spacing of 20 mm typical, this choke is ideal for TRIAC/SCR control circuits, power supplies, and electronic appliances requiring reliable EMI filtering and energy storage.