RT8121-32-12M8

Overview

The Schaffner RT8121-32-12M8 is a two-channel common mode filter choke from the RT-Series, designed for PCB through-hole mounting. It features nanocrystalline core material and provides an inductance of 12.8 mH with a tolerance of -30% to +50%. The component supports maximum DC currents of 32 A and 51 A across its channels, with a maximum DC resistance of 3.4 mohms. It operates within a temperature range of -40°C to +125°C.

Feature Summary

• Utilizes nanocrystalline core technology for high-performance electromagnetic interference suppression.
• Designed as a current-compensated choke for effective common mode noise reduction.
• Constructed for horizontal PCB mounting via through-hole termination.

Applications

• Photovoltaic inverters
• Motor drives
• Fast charging stations

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 any recent product change notices regarding pinout or mechanical dimensions before finalizing procurement.

Selection Notes

Select this component when designing circuits requiring robust common mode filtering for midsize power ranges. Ensure the PCB layout accommodates the through-hole mounting style and physical dimensions. Verify that the operating environment stays within the specified -40°C to +125°C temperature range to maintain performance integrity.

Part Context

This component belongs to the RT-Series of common mode chokes manufactured by TE Connectivity / Schaffner. These filters are engineered for industrial and automotive applications where high current handling and compact form factors are critical. The series utilizes advanced magnetic materials to achieve superior attenuation characteristics in noisy environments.

Replacement Considerations

Consult official substitution guides for equivalent models within the RT-Series or other Schaffner lines. Ensure any replacement matches the 12.8 mH inductance, 32 A current rating, and through-hole mounting configuration. Verify compatibility with existing PCB footprints and thermal management strategies.