B82791H2402N010

Overview

The B82791H2402N010 is a compact current-compensated ring core double choke manufactured by EPCOS (TDK Electronics). It features a rated AC voltage of 250V and a maximum current rating of 4A. The component operates within a temperature range of -40°C to +125°C. Designed for through-hole mounting, it utilizes special magnetic core materials to achieve high resonance frequencies and superior saturation capabilities without potting or adhesives.

Feature Summary

• Provides effective common-mode filtering at frequencies exceeding 300 MHz due to specialized core materials and absence of potting compounds.
• Features a highly compact physical design suitable for post-design EMC fine-tuning on finished PCBs.
• Incorporates up to 10% stray inductance to effectively suppress symmetric interference signals.

Applications

• LED driver circuits
• Switching power supply applications
• Post-design EMC fine-tuning on semi-finished PCBs

Procurement Notes

Verify the manufacturer branding during procurement, as TDK Electronics has discontinued the EPCOS brand name for passive components. Ensure the ordering suffix matches the required specifications exactly, as suffixes define specific electrical and mechanical parameters. Confirm compliance with RoHS directives and relevant safety standards such as EN 60938-2 before finalizing orders.

Selection Notes

Select this component when space constraints require a small form factor for high-frequency common-mode noise suppression. The 4A current rating and 250V AC voltage make it suitable for mains-connected applications. Consider the high stray inductance if symmetric interference suppression is also required alongside common-mode filtering.

Part Context

This component belongs to the B82791H series of compact current-compensated ring core double chokes. These components are engineered for high-frequency EMC applications where size and performance are critical. The series is designed to meet stringent safety requirements, including GWIT and GWFI specifications for plastic materials.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs if considering alternative manufacturers, noting that TDK has phased out the EPCOS brand for these passive components.