B82721J2501N022

Overview

The B82721J2501N022 is a current-compensated ring core double choke manufactured by EPCOS (TDK). It features a ferrite core and radial termination style. The component has an inductance of 27 mH with a tolerance of 30%. It supports a maximum DC current of 400 mA and exhibits a maximum DC resistance of 1.7 Ohms. Designed for 250 V AC applications, it operates within a temperature range of -40 °C to +125 °C. Physical dimensions are 18.2 mm in length, 13.2 mm in width, and 20.3 mm in height.

Feature Summary

• Current-compensated design utilizing a ferrite ring core for symmetrical interference suppression.
• High resonance frequency achieved through specialized sector winding techniques.
• Flame-retardant polycarbonate case and polyurethane potting compliant with UL 94 V-0 standards.

Applications

• Suppression of common-mode interference in compact switch-mode power supplies
• EMI filtering in general-purpose converters
• Power line chokes for electronic equipment

Procurement Notes

Verify the specific suffix J2501N022 against official EPCOS documentation to confirm exact electrical parameters and mechanical dimensions. Ensure compatibility with required thermal ratings and mounting configurations. Cross-reference RoHS compliance status using the manufacturer's latest datasheet. Confirm that the radial lead spacing matches the target PCB layout requirements before finalizing procurement decisions.

Selection Notes

Select this component when designing circuits requiring effective common-mode noise reduction in space-constrained environments. The high resonance frequency makes it suitable for high-frequency switching applications. Consider the 400 mA current rating and 1.7 Ohm resistance for thermal management. Verify that the operating temperature range meets the environmental conditions of the end application.

Part Context

This part belongs to the B82721 series of current-compensated ring core double chokes from EPCOS. The series is engineered for suppressing common-mode interference in various types of compact switch-mode power supplies and converters. These components utilize ferrite cores and are available in multiple inductance and current ratings to suit different power line choke requirements.

Replacement Considerations

Consult official EPCOS substitution guides for verified alternatives. Ensure any replacement maintains identical inductance, current rating, and physical footprint specifications.

FAQ

What is the stray inductance characteristic of this component?

The component exhibits approximately 1% stray inductance, which facilitates symmetrical interference suppression.

How is the magnetic core constructed?

It uses a current-compensated ring core design with a ferrite core material and sector winding technique.