B82721K2401N023

Overview

The B82721K2401N023 is a current-compensated ring core double choke manufactured by EPCOS (TDK). It belongs to the B82721 series of power line chokes designed for electromagnetic interference suppression. The component features a ferrite core and radial termination style suitable for through-hole mounting. Key electrical specifications include an inductance of 39 mH with a tolerance of 30%, and a maximum DC current rating of 400 mA. The maximum DC resistance is specified at 1.7 Ohms. The device operates within a temperature range of -40 °C to +125 °C and is rated for 250 V AC applications.

Feature Summary

• Current-compensated ring core design for effective common mode noise attenuation
• Ferrite core construction optimized for power line filtering applications
• Radial leaded termination for standard printed circuit board integration

Applications

• Electromagnetic interference suppression in power supply circuits
• Common mode noise filtering for AC power lines
• Signal integrity protection in industrial electronic equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct inductance and current ratings. Confirm that the radial package dimensions match the target PCB layout requirements. Check RoHS compliance status as indicated in the latest datasheet revision. Ensure the operating temperature range aligns with the environmental conditions of the final assembly.

Selection Notes

Select this component when a high inductance value of 39 mH is required for low-frequency noise suppression. The 400 mA current rating suits moderate power applications. Consider the physical size constraints due to the ring core structure. Compare against other B82721 variants if different inductance or current levels are needed for the specific circuit design.

Part Context

This part is part of the B82721 series of current-compensated ring core chokes from EPCOS. These components are widely used for EMC filtering in various electronic devices. The series offers multiple inductance values and current ratings to accommodate different power line requirements. TDK Electronics continues to support this established product line for reliable noise suppression solutions.

Replacement Considerations

The B82721K2401N023 may be substituted with other parts in the B82721 series that share identical electrical parameters and mechanical footprint. Verify compatibility with equivalent models such as those with different ordering suffixes but matching 39 mH inductance and 400 mA current ratings.