B82721A2122N020

Overview

The B82721A2122N020 is a current-compensated ring core double choke from the TDK B82721A series. It features a ferrite core and radial through-hole mounting with four pins. The nominal inductance is 6.8 mH (6800 µH) with a tolerance of ±30%. It supports a maximum DC current of 1.2 A and has a typical DC resistance of 280 mΩ. Rated for 250 V AC, it operates between -40°C and 125°C. Dimensions are 17.9 mm length, 17.3 mm width, and 12.6 mm height.

Feature Summary

• Current-compensated design for power line filtering applications
• Ferrite ring core construction for high inductance density
• Through-hole mounting with horizontal pin configuration

Applications

• Power line noise suppression
• EMI filtering in AC mains circuits
• General purpose inductor applications

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheets. Confirm package dimensions and pin pitch match system requirements. Ensure operating temperature range meets environmental specifications. Validate electrical parameters including inductance and DC resistance at intended test frequencies.

Selection Notes

Select this component when requiring high inductance in a compact radial package. Suitable for applications needing current compensation to maintain performance under load. Verify voltage ratings align with circuit requirements. Consider thermal management within the specified temperature range.

Part Context

Part of the B82721A series of current-compensated chokes designed for power line applications. Manufactured by TDK Electronics, formerly EPCOS. The series offers various inductance values and current ratings in standardized packages for consistent design integration across power supply designs.

Replacement Considerations

Check equivalent part numbers within the B82721A series for different inductance or current ratings. Verify mechanical compatibility before substitution. Ensure electrical characteristics meet original design specifications.