B82721K2152N001

Overview

The B82721K2152N001 is a current-compensated ring core double choke designed for power line applications. It features an inductance of 3.3 mH with a tolerance of 30%. The component supports a maximum AC voltage rating of 250 V and withstands 1.5 kVAC. It handles a maximum DC current of 1.5 A with a typical DC resistance of 180 mOhm. Operating temperatures range from -40°C to +125°C. Physical dimensions are 18.2 mm length, 13.2 mm width, and 20.3 mm height. It utilizes radial through-hole mounting.

Feature Summary

• High resonance frequency achieved through specialized winding techniques
• Approximately 1% stray inductance ensures symmetrical interference suppression
• Compliant with EN 60938-2 (VDE 0565-2) design standards
• Capable of withstanding wave soldering processes

Applications

• Suppression of common-mode interferences in electronic circuits
• Electronic ballasts in lighting systems
• Switch-mode power supplies

Procurement Notes

Verify the specific ordering suffix against official TDK/EPCOS documentation to confirm exact electrical characteristics and approval status. Ensure the selected variant matches the required AC voltage rating and current handling capabilities for the target application. Confirm RoHS compatibility and specific agency approvals such as ENEC or UR if mandated by regional regulations. Cross-reference physical dimensions to ensure fit within the intended chassis or PCB layout constraints.

Selection Notes

Select this component when designing power lines requiring effective common-mode noise reduction with high current compensation. The low stray inductance makes it suitable for applications demanding symmetrical interference suppression. Verify that the 1.5 A current rating and 250 V AC voltage limits align with system operational parameters. Consider the radial through-hole package for robust mechanical mounting in industrial or consumer electronics environments.

Part Context

This component belongs to the B82721 series of current-compensated ring core double chokes manufactured by EPCOS, now part of TDK Electronics. These chokes are engineered for power line filtering, offering high inductance values with minimal differential mode inductance. The series is widely used in global markets due to its compliance with international safety standards and suitability for automated assembly processes like wave soldering.

Replacement Considerations

Consult official TDK cross-reference lists for direct replacements. Ensure substitute parts maintain identical inductance, current ratings, and physical footprint. Verify that alternative components hold equivalent UL and VDE approvals for the specific application region.