B82721K2501N021

Overview

The B82721K2501N021 is a current-compensated ring core double choke manufactured by EPCOS (TDK Electronics). It features a ferrite core and polycarbonate case with polyurethane potting. The component provides an inductance of 27 mH with a tolerance of 30%. It supports a maximum DC current of 500 mA and has a maximum DC resistance of 1.1 Ohms. The physical dimensions are 18.2 mm in length, 13.2 mm in width, and 20.3 mm in height. It utilizes radial termination for through-hole mounting.

Feature Summary

• Current-compensated design utilizing a ferrite ring core to suppress common mode interference.
• High resonance frequency achieved through specialized sector winding techniques.
• Flame-retardant construction with UL 94 V-0 rated case and potting materials.

Applications

• Power line filtering in electronic equipment
• Symmetrical interference suppression circuits
• EMI mitigation in industrial electronics

Procurement Notes

Verify the specific suffix N021 against official EPCOS documentation to confirm exact mechanical and electrical specifications. Ensure compatibility with through-hole mounting processes and verify RoHS compliance status for the target application environment before finalizing procurement orders.

Selection Notes

Select this component when a 27 mH inductance at 500 mA is required for power line applications. Consider its radial package and specific dimensional constraints for PCB layout. Evaluate the 30% tolerance and 1.1 Ohm DCR against circuit requirements for acceptable voltage drop and impedance characteristics.

Part Context

This part belongs to the B82721 series of current-compensated ring core double chokes designed for power lines. The series typically operates at 250 V AC and covers current ranges from 0.3 A to 2 A. These components are engineered for robust performance in suppressing electromagnetic interference in various electronic systems.

Replacement Considerations

Consult official EPCOS substitution guides for verified alternatives within the B82721 family or equivalent series. Ensure any substitute matches the 27 mH inductance, 500 mA current rating, and radial through-hole form factor without compromising safety certifications.