RT8121-63-4M4

Overview

The RT8121-63-4M4 is a two-channel current-compensated common mode choke manufactured by TE Connectivity / Schaffner. It utilizes a nanocrystalline core and features through-hole PCB mounting. Key electrical parameters include an inductance of 4.4 mH with tolerances of -30% to +50%. The component supports maximum DC currents of 63 A and 100 A, with a maximum DC resistance of 1.1 mOhms. It operates within a temperature range of -40°C to +125°C and has physical dimensions of 66 mm diameter and 41 mm height.

Feature Summary

• Utilizes nanocrystalline core material for high-performance electromagnetic interference suppression
• Designed as a current-compensated choke for efficient AC and DC filtering applications
• Constructed for robust through-hole PCB mounting in industrial environments

Applications

• AC and DC filtering for midsize power range drives
• Automation and industrial LED lighting systems
• EV charging stations and fast chargers
• Photovoltaic inverters and UPS systems
• Medical and laboratory equipment

Procurement Notes

Verify the specific manufacturer part number against official TE Connectivity or Schaffner documentation to ensure authenticity. Confirm that the nanocrystalline core specifications and current ratings match the design requirements. Check for RoHS compliance details in the latest datasheet. Ensure the through-hole pin configuration aligns with the target PCB layout before finalizing procurement orders.

Selection Notes

Select this component when high current handling and low DC resistance are critical for noise reduction in power electronics. The nanocrystalline core offers superior performance compared to standard ferrite cores for specific frequency ranges. Consider the physical size constraints due to the 66 mm diameter and 41 mm height. Ensure the operating temperature range of -40°C to +125°C meets the environmental conditions of the intended application.

Part Context

This component belongs to the RT-Series of common mode chokes from TE Connectivity / Schaffner. The series is designed for EMC/RFI suppression in various electronic devices. The RT8121-63-4M4 specifically targets midsize power applications requiring robust filtering capabilities. It is part of a broader portfolio of inductors and chokes offered by the manufacturer for industrial and commercial use.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data. Consult official manufacturer cross-reference lists for potential alternatives.