B82721J2701N020

Overview

The B82721J2701N020 is a current-compensated ring core power choke from the EPCOS B82721 series, designed for suppressing common-mode interference in compact switch-mode power supplies. It features a ferrite core with radial termination and operates at a rated voltage of 250 V AC. The component provides an inductance of 27 mH per winding with a tolerance of ±30%. It supports a maximum DC current of 400 mA and has a maximum DC resistance of 1.7 Ohms. The operating temperature range spans from -40 °C to +125 °C.

Feature Summary

• Designed to suppress common-mode interference in switch-mode power supplies
• Utilizes a current-compensated ring core structure for effective noise reduction
• Features radial termination for through-hole mounting applications

Applications

• Compact switch-mode power supplies
• Power converters
• Common-mode interference suppression circuits

Procurement Notes

Verify the specific suffix J against official TDK documentation to confirm exact mechanical dimensions and material specifications, as suffixes define variant details. Ensure the requested quantity aligns with standard packaging formats such as trays. Confirm RoHS compliance status directly from the manufacturer's datasheet for the specific batch code prior to procurement.

Selection Notes

Select this component when designing circuits requiring 27 mH inductance with a 400 mA current rating. Verify that the 1.7 Ohm DC resistance fits within the system's loss budget. Ensure the PCB layout accommodates the radial footprint and that the operating environment remains within the specified -40 °C to +125 °C temperature range.

Part Context

This part belongs to the B82721 series of power line chokes manufactured by EPCOS (TDK). The series offers various inductance values ranging from 0.2 to 47 mH and current capabilities up to 6 A. These components are engineered for general-purpose power line filtering in electronic equipment requiring reliable common-mode noise attenuation.

Replacement Considerations

Check for direct substitutes within the B82721 series with matching inductance and current ratings. Consider TDK-branded equivalents following the brand consolidation. Verify pin compatibility and thermal characteristics before substituting.