RN122-3-02

Overview

The Schaffner RN122-3-02 is a current-compensated common mode choke designed for through-hole PCB mounting. It features a ferrite core and provides an inductance of 4.5 mH with a maximum DC current rating of 3 A. The component has a maximum DC resistance of unspecified low value, operates within a temperature range of -40°C to +100°C, and measures approximately 27 mm x 28 mm x 16.5 mm. It is unshielded and tested at 10 kHz.

Feature Summary

• Current compensated design for effective common mode noise suppression
• Through-hole termination for secure PCB integration
• Ferrite core construction for stable magnetic performance

Applications

• Electromagnetic interference filtering in power supply circuits
• Noise suppression in industrial control systems
• Common mode chokes in AC/DC converter inputs

Procurement Notes

Verify the exact datasheet version for the RN122-3-02 to confirm specific tolerance ranges and insulation test voltages, as these parameters can vary by manufacturing batch. Ensure the procurement source provides official TE Connectivity or Schaffner documentation to validate RoHS compliance and UL flammability ratings (UL 94 V-0). Cross-reference the part number alias if applicable.

Selection Notes

Select this component when a 4.5 mH inductance and 3 A current handling capability are required for common mode noise reduction. The horizontal form factor suits applications where board space allows for larger footprints. Verify that the operating environment stays within the -40°C to +100°C range and that the unshielded nature does not interfere with nearby sensitive components.

Part Context

This part belongs to the Schaffner RN series of common mode chokes, which are widely used for EMI suppression in electronic equipment. The RN122 series specifically denotes a horizontal mounting style with through-hole pins, distinguishing it from vertical variants like the RN212 series. These components are integral to meeting EMC standards in power electronics.

Replacement Considerations

Publicly confirmed substitute part numbers for RN122-3-02 were not found in the provided source material. Users should consult the manufacturer's official cross-reference guide for verified alternatives.