MSD1278H-563MED

Common Mode Chokes Overview

The MSD1278H-563MED is a shielded coupled inductor from the Coilcraft MSD1278H series, designed for high-temperature automotive applications. It features a ferrite core and surface-mount termination with dimensions of 12.3 mm x 12.3 mm x 8.05 mm. The component provides a parallel inductance of 56 µH and a series inductance of 224 µH, with a tolerance of 20%. It supports a maximum DC current of 2.75 A and has a maximum DC resistance of 140 mOhms. Certified to AEC-Q200 standards, it operates within a temperature range of -40°C to +125°C.

Common Mode Chokes Feature Summary

• AEC-Q200 qualified for automotive reliability requirements
• Shielded magnetic design minimizes electromagnetic interference
• High-temperature operation capability up to 125°C
• Compact surface-mount footprint for space-constrained PCBs

Common Mode Chokes Applications

• Automotive power supply circuits
• DC-DC converter input/output filtering
• Common mode noise suppression in vehicle electronics

Common Mode Chokes Procurement Notes

Verify the specific suffix MED against official Coilcraft documentation to confirm terminal configuration and packaging details. Ensure the selected variant meets the required thermal management specifications for the target application environment. Cross-reference the part number with the latest manufacturer datasheet to confirm availability status and any potential obsolescence notices before finalizing procurement plans.

Common Mode Chokes Selection Notes

Select this component when designing for automotive environments requiring robust thermal performance and certified reliability. The 12.3 mm square package offers a balance between current handling capacity and board space efficiency. Consider the 2.75 A current rating and 140 mOhms DCR for loss calculations in high-efficiency power stages. Verify that the 56 µH parallel inductance aligns with the circuit's ripple current requirements.

Common Mode Chokes Part Context

This part belongs to the MSD1278H series, which represents Coilcraft's high-temperature coupled inductor line. The series is engineered specifically for demanding automotive electronic systems where standard industrial components may fail due to thermal stress. The H suffix typically denotes enhanced thermal characteristics compared to standard variants.

Common Mode Chokes Replacement Considerations

MSD1278T-563MLD is listed as an alternative part number with similar electrical characteristics but potentially different packaging or tolerance specifications. Verify functional equivalence through detailed parameter comparison before substitution.