B82721K2401N021

Overview

The B82721K2401N021 is a current-compensated ring core double choke manufactured by EPCOS (TDK). It features an inductance of 27 mH with a tolerance of 30%. The component supports a maximum DC current of 400 mA and has a maximum DC resistance of 1.7 Ohms. It is rated for 250 V AC and operates within a temperature range of -40°C to +125°C. The physical dimensions are 18.2 mm in length, 13.2 mm in width, and 20.3 mm in height. The termination style is radial, and the core material is ferrite.

Feature Summary

• Current-compensated design for effective common mode noise suppression
• Ring core construction using ferrite material
• Radial leaded termination for through-hole mounting

Applications

• Power line filtering in electronic equipment
• EMI suppression in consumer electronics
• Industrial control system power inputs

Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to ensure correct electrical parameters and mechanical dimensions. Confirm RoHS compliance status and relevant safety approvals such as UR or ENEC required for your target market. Check for any recent product lifecycle changes or obsolescence notices from TDK Electronics before finalizing procurement plans.

Selection Notes

Select this component when a high inductance value of 27 mH is required for common mode interference reduction in low-current applications up to 400 mA. Ensure the operating environment stays within the specified -40°C to +125°C range. Verify that the radial package dimensions fit the PCB layout constraints and that the 1.7 Ohm DC resistance meets the circuit's voltage drop requirements.

Part Context

This part belongs to the B82721 series of power line chokes designed for electromagnetic compatibility. These components are widely used in global markets to meet regulatory standards for conducted emissions. The series offers various inductance values and current ratings to suit different power supply designs across automotive, industrial, and consumer sectors.

Replacement Considerations

Check for direct substitutes within the B82721 family with matching inductance and current ratings. Verify pin compatibility and mechanical footprint equivalence before substitution.