B82746S4143A040

Overview

The EPCOS B82746S4143A040 is a current-compensated ring core choke designed for power line common mode filtering. It features an inductance of 3.2 mH at 10 kHz and supports a rated current of 13 A, with a peak rating of 14 A at 60°C. The component utilizes a through-hole mounting style with a maximum length of 52.00 mm. Its typical DC resistance is 6.5 mOhm, ensuring low insertion loss while attenuating common mode interference.

Feature Summary

• Current-compensated ring core design for efficient differential signal transmission
• High current handling capability suitable for demanding power applications
• Effective attenuation of common mode interference at standard frequencies

Applications

• Power supply input filtering
• Industrial equipment noise suppression
• Inverter output filter housing integration

Procurement Notes

Verify the specific suffix 'A040' against official TDK-EPC documentation to confirm exact mechanical dimensions and terminal configuration. Ensure the application environment does not exceed the thermal limits associated with the 13 A rated current. Cross-reference datasheet revisions to confirm compliance with current RoHS directives before finalizing procurement orders.

Selection Notes

Select this component when high current capacity is required alongside significant common mode noise reduction. The ring core construction offers superior performance compared to standard wire-wound chokes in compact spaces. Evaluate the 6.5 mOhm DC resistance impact on overall system efficiency and voltage drop during continuous operation under full load conditions.

Part Context

This component belongs to the EPCOS B82746 series of power line filters. These components are engineered for robust electromagnetic compatibility in industrial and automotive environments. The series integrates ferrite materials optimized for high-frequency attenuation while maintaining structural integrity under thermal stress.

Replacement Considerations

Consult official TDK-EPC substitution lists for verified equivalents. Generic replacements may lack the specific current compensation characteristics or thermal stability required for this application.