B82721A2401N021

Overview

The B82721A2401N021 is a current-compensated ring core double choke manufactured by EPCOS (TDK Electronics). It belongs to the B82721 series of power line chokes designed for electromagnetic interference suppression. The component features a ferrite core with radial termination and operates within a temperature range of -40 °C to +125 °C. Key electrical parameters include an inductance of 27 mH, a maximum DC current rating of 400 mA, and a maximum DC resistance of 1.7 Ohms. It is rated for 250 V AC applications.

Feature Summary

• Current-compensated design utilizing a ring core structure for effective common mode noise suppression.
• Constructed with ferrite core material suitable for power line filtering applications.
• Radial leaded termination style enabling through-hole mounting on printed circuit boards.

Applications

• Electromagnetic interference suppression in power supply circuits
• Filtering in industrial equipment power lines
• Noise reduction in consumer electronic devices

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct tolerance and packaging specifications. Confirm that the component meets all required safety certifications for the target market. Ensure storage conditions adhere to humidity sensitivity levels if applicable. Cross-reference the part number with the latest revision history to avoid obsolete stock.

Selection Notes

Select this component when a 27 mH inductance at 400 mA is required for common mode noise filtering. The 1.7 Ohm DC resistance should be evaluated against voltage drop constraints in the circuit. The operating temperature range must align with the environmental conditions of the final assembly. Verify physical dimensions fit the available PCB real estate.

Part Context

This component is part of the B82721 series of current-compensated ring core double chokes from EPCOS (TDK Electronics). These chokes are engineered for power line applications, offering high inductance values with low DC resistance. The series supports various current ratings and inductance options to suit different filtering requirements across industrial and consumer electronics sectors.

Replacement Considerations

Consult the official B82721 series documentation for direct substitutes. Potential alternatives may include variants with different inductance tolerances or current ratings within the same family. Ensure any replacement maintains the same form factor and terminal configuration for board compatibility.