The 5800-121-RC is a high-current choke from Bourns' 5800 Series, designed for power supply filtering and electromagnetic interference suppression in electronic circuits. This component features a ferrite bobbin core with an inductance of 120 µH (±10%), a maximum DC resistance of 0.300 O, and is rated for a saturation current of 1.0 A and a continuous rated current of 0.70 A at a 35°C temperature rise. The choke is constructed with VW-1 rated shrink tubing to cover the winding and offers a dielectric strength of 2500 Vrms, ensuring robust electrical isolation and safety. Operating reliably across a temperature range of -40°C to +125°C, this component is ideal for switching power supplies, DC-DC converters, and noise filtering applications where high inductance values and low losses are required.