MSD1278H-472MED

Common Mode Chokes Overview

The Coilcraft MSD1278H-472MED is a shielded coupled inductor from the MSD1278H series, designed for automotive applications. It features a ferrite core and surface-mount termination. The component has a parallel inductance of 4.7 uH with a 20% tolerance and a maximum DC current rating of 6.5 A. The maximum DC resistance is 3.5 mOhms. Physical dimensions are 12.3 mm in length, 12.3 mm in width, and 7.8 mm in height. It operates within a temperature range of -40°C to +125°C and holds AEC-Q200 qualification.

Common Mode Chokes Feature Summary

• AEC-Q200 qualified for automotive reliability standards
• Shielded construction minimizes electromagnetic interference
• High saturation current capability supports demanding power stages

Common Mode Chokes Applications

• Automotive power supply circuits
• DC-DC converter input/output filtering
• On-board charging systems

Common Mode Chokes Procurement Notes

Verify the specific suffix MED against official Coilcraft documentation to confirm terminal plating and packaging configuration. Confirm availability status as distribution channels may report limited stock or restricted supply conditions. Ensure the selected variant matches the required thermal and electrical specifications for the target automotive environment.

Common Mode Chokes Selection Notes

Select this component when high current handling and low DC resistance are critical for automotive power conversion efficiency. The 12x12mm footprint allows for compact PCB layouts while maintaining robust thermal performance. Verify that the 4.7 uH inductance value aligns with the switching frequency and ripple current requirements of the design.

Common Mode Chokes Part Context

This part belongs to the MSD1278H series, which distinguishes itself from standard MSD1278 models through enhanced high-temperature operation up to 125°C and AEC-Q200 certification. The H-series is specifically engineered for harsh automotive environments where thermal stability and long-term reliability are mandatory.

Common Mode Chokes Replacement Considerations

MSD1278H-472MLB

Common Mode Chokes FAQ

What is the maximum operating temperature for the MSD1278H-472MED?

The maximum operating temperature is +125°C, consistent with its AEC-Q200 automotive qualification.

Is the MSD1278H-472MED shielded?

Yes, it is a shielded coupled inductor designed to reduce magnetic field emissions.