B82721K2102U030

Overview

The B82721K2102U030 is a current-compensated ring core double choke manufactured by EPCOS (TDK). It belongs to the B82721 series of power line chokes designed for electromagnetic compatibility. The component features a radial termination style and operates within a temperature range of -40°C to +125°C. Key electrical parameters include an inductance of 10 mH at 10 kHz, a maximum DC current rating of 1.1 A, and a maximum DC resistance of 310 mOhms. The physical dimensions are 18.2 mm in length, 13.2 mm in width, and 20.0 mm in height.

Feature Summary

• Current-compensated ring core construction for effective common mode noise suppression
• Rated for 250 V AC operation in power line applications
• Through-hole mounting design with radial leads

Applications

• Electromagnetic interference suppression in power supply circuits
• Common mode filtering for AC power lines
• Noise reduction in industrial electronic equipment

Procurement Notes

Verify the specific suffix U030 against the manufacturer's latest datasheet to confirm lead length and packaging details. Ensure the selected variant matches the required inductance tolerance and current rating for the target circuit. Cross-reference the part number with official TDK/EPCOS documentation to avoid confusion with similar series components that may have different mechanical or electrical characteristics.

Selection Notes

Select this component when a through-hole solution is required for 250 V AC power line filtering. The 1.1 A current rating suits moderate power applications. Consider the 10 mH inductance value for the specific frequency range of noise to be suppressed. Verify that the radial package fits the PCB layout constraints and that the operating temperature range meets the environmental requirements of the end device.

Part Context

This component is part of the B82721 series of power line chokes from EPCOS (now TDK Electronics). The series offers various inductance values and current ratings using ring core and frame core technologies. These chokes are widely used in global electronics to meet EMC standards. The B82721K2102U030 specifically utilizes a ring core design for compact size and high performance in common mode noise attenuation.

Replacement Considerations

Check for direct substitutes within the B82721 series with matching inductance and current ratings. Verify mechanical compatibility for through-hole mounting. Ensure any alternative component meets the same 250 V AC voltage rating and temperature specifications.