MSD1278H-103MED

Common Mode Chokes Overview

The MSD1278H-103MED is a shielded coupled power inductor from the Coilcraft MSD1278H series, designed for automotive applications. It features a ferrite core and surface-mount construction within a 12 mm x 12 mm x 7.8 mm package. The component provides an inductance of 10 µH with a 20% tolerance. Key electrical specifications include a maximum DC current rating of 4.2 A, a maximum DC resistance of 15 mOhms, and a saturation current of 7.6 A. It operates between -40°C and +125°C and holds AEC-Q200 qualification.

Common Mode Chokes Feature Summary

• Shielded coupled inductor design utilizing a ferrite core to minimize electromagnetic interference.
• AEC-Q200 qualified for reliable performance in demanding automotive environments.
• High thermal stability supporting operation up to +125°C.

Common Mode Chokes Applications

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

Common Mode Chokes Procurement Notes

Verify the specific suffix MED against official Coilcraft documentation to confirm pin configuration and tape/reel specifications. Ensure the selected variant meets the required thermal and current ratings for the target application. Cross-reference the manufacturer part number with authorized distributors to confirm availability and authenticity before procurement.

Common Mode Chokes Selection Notes

Select this component when a shielded coupled inductor with high current capability and automotive qualification is required. The 10 µH value suits specific filtering needs in power conversion stages. Consider the physical dimensions and mounting style for PCB layout compatibility. Verify that the saturation and RMS current ratings exceed the circuit's peak operating conditions.

Common Mode Chokes Part Context

This component belongs to the MSD1278H series of shielded coupled inductors manufactured by Coilcraft. The series is engineered for high-performance automotive electronics, offering robust magnetic shielding and high thermal endurance. The H designation typically indicates specific packaging or terminal variations within the broader MSD1278 family.

Common Mode Chokes Replacement Considerations

Consult official Coilcraft substitution guides for verified equivalents. Generic cross-references may not match the precise AEC-Q200 qualification or dimensional constraints required for automotive certification.