B82791G2901N020

Overview

The B82791G2901N020 is a current-compensated ring core double choke from the EPCOS (TDK) power line choke series. It features a rated AC voltage of 250 V and a rated inductance of 4.7 mH per winding. The component supports rated currents ranging from 0.25 A to 0.9 A depending on the specific thermal rating, with this variant typically associated with +60°C operation. It provides common mode filtering for power lines.

Feature Summary

• Utilizes a current-compensated ring core design for effective common mode noise suppression
• Constructed as a double choke suitable for differential power line applications
• Designed for high insulation strength with specified test voltage ratings

Applications

• Power supplies requiring EMI filtering
• Battery chargers
• Portable electronic devices

Procurement Notes

Verify the specific thermal class (+40°C or +60°C) and corresponding rated current against the manufacturer's datasheet before procurement. Ensure the application voltage does not exceed the 250 V AC limit. Confirm that the 4.7 mH inductance value aligns with the circuit requirements for the intended frequency range.

Selection Notes

Select this component when a compact ring core choke is required for 250 V AC power lines. Consider the physical size constraints and the need for current-compensated operation where differential mode inductance is minimal. Verify that the ambient temperature allows for the rated current without exceeding thermal limits.

Part Context

This part belongs to the B82791G series of power line chokes manufactured by TDK Electronics under the EPCOS brand. These components are engineered for general-purpose electromagnetic interference suppression in AC mains applications, offering a balance between performance and physical footprint.

Replacement Considerations

Consult official TDK-EPCOS documentation for direct cross-references. Ensure any substitute maintains the 4.7 mH inductance, 250 V AC rating, and compatible physical mounting dimensions.