B82746S4103A021

Overview

The EPCOS B82746S4103A021 is a current-compensated ring core triple choke designed for power line applications. It features a rated current of 10 A and an inductance of 2 mH at 10 kHz. The device supports a rated voltage of 500/300 V AC (50/60 Hz) with a test voltage of 2800 V AC for 2 seconds between lines. It operates within a temperature range of -40 to 125°C, including self-temperature rise, and has a typical DC resistance of 9.6 mOhm.

Feature Summary

• Triple choke configuration providing current compensation for three-phase power lines
• Ring core construction optimized for high common-mode noise suppression
• Through-hole mounting design suitable for robust industrial connections

Applications

• Three-phase power line filtering in industrial equipment
• EMI suppression in motor drive systems
• Power supply input stages for heavy machinery

Procurement Notes

Verify the specific suffix 'A021' to confirm the 500/300 V AC rating, as other variants like 'A020' differ. Ensure the application environment stays within the -40 to 125°C operating range. Confirm that the 10 A rated current meets the system's peak load requirements without exceeding thermal limits.

Selection Notes

Select this component when three-phase current compensation is required for effective common-mode noise reduction. The 2 mH inductance value is critical for specific frequency attenuation profiles. Consider the physical dimensions and through-hole mounting constraints during PCB or chassis layout planning.

Part Context

This component belongs to the B82746S series of current-compensated power line ring core chokes from TDK Electronics. These devices are engineered for high reliability in demanding power electronics environments, offering compact solutions for electromagnetic interference mitigation in industrial and automotive-grade applications.

Replacement Considerations

The B82746S4103A020 is a similar variant but differs in rated voltage (520/300 V AC). Verify electrical compatibility before substitution.