B82791H2251N020

Overview

The B82791H2251N020 is a current-compensated ring core choke manufactured by EPCOS - TDK Electronics. It features a nominal inductance of 47 mH and a rated current of 0.25 A. The component utilizes a ferrite core material and is designed for through-hole mounting with four terminals. Its physical dimensions are a maximum length of 15.30 mm, width of 7.40 mm, and height of 17.60 mm. The device operates within a temperature range of -40 °C to +125 °C and complies with RoHS standards.

Feature Summary

• Current-compensated ring core design for balanced signal integrity
• Ferrite core construction for effective electromagnetic interference suppression
• Through-hole termination for secure PCB integration

Applications

• Data line filtering in communication equipment
• Common mode noise suppression in industrial control systems
• Signal protection in automotive electronic modules

Procurement Notes

Verify the complete part number including suffix N020 to ensure correct lead wire configuration and tolerance specifications. Confirm that the required operating current does not exceed 0.25 A to prevent saturation. Check for RoHS compliance documentation if environmental regulations apply to the assembly process. Ensure mechanical clearance accommodates the specified maximum height and width dimensions during layout.

Selection Notes

Select this component when high inductance values are required for low-frequency common mode noise attenuation on data lines. The through-hole package offers robust mechanical stability compared to surface mount alternatives. Consider the 0.25 A current rating when designing circuits with higher load currents. The wide operating temperature range supports deployment in harsh industrial or automotive environments where thermal stability is critical for consistent performance.

Part Context

This component belongs to the B82791 series of common mode chokes from EPCOS, now operating under TDK Electronics. The series is engineered for general-purpose electromagnetic compatibility applications. These chokes are widely used in telecommunications and computing infrastructure to protect sensitive data interfaces from external interference while maintaining signal fidelity across varying environmental conditions.

Replacement Considerations

Public confirmed substitute part numbers: None identified.