The SRF0905-400Y is a line filter inductor from Bourns' SRF0905 series designed for EMI suppression applications. It features an inductance of 40 ± 30% µH with a maximum leakage inductance of 18 µH and a DC resistance of 0.25 O per winding. The device is rated for 80 Vdc, 0.9 A continuous current, and operates across a frequency range of 20–100 MHz with a minimum impedance of 800 O. With a ferrite core, enameled copper wire, and tin-plated terminals, the SRF0905-400Y is RoHS compliant and operates reliably from -40°C to +105°C. This component is ideal for power supply filtering, signal line protection, and general EMI mitigation in consumer electronics and industrial equipment.