MSD1278H-473MED

Common Mode Chokes Overview

The Coilcraft MSD1278H-473MED is a high-temperature, shielded coupled power inductor from the MSD1278H series. It features a ferrite core and surface-mount termination style with dimensions of 12.3 mm x 12.3 mm x 8.05 mm. The component offers an inductance range of 1 µH to 1000 µH across the series, with this specific variant providing 47 µH per winding (190 µH series). It supports maximum DC currents ranging from 480 mA to 7.1 A depending on the value, with a maximum DC resistance up to 1.483 Ohms. Operating temperatures extend from -40°C to +125°C, and it meets AEC-Q200 qualification standards for automotive reliability.

Common Mode Chokes Feature Summary

• High-temperature design rated for operation up to +125°C
• Magnetic shielding for compact packaging and tight winding-to-winding coupling
• AEC-Q200 qualified for automotive applications
• Ferrite core construction for stable performance

Common Mode Chokes Applications

• Automotive power supply circuits
• DC-DC converter designs
• High-temperature industrial electronics

Common Mode Chokes Procurement Notes

Verify the exact suffix configuration against the manufacturer's current datasheet to ensure compatibility with your thermal and electrical requirements. Confirm availability status as distribution channels may report limited stock or special order conditions for specific high-temperature variants. Cross-reference the part number alias if applicable to ensure correct sourcing from authorized Coilcraft distributors.

Common Mode Chokes Selection Notes

Select this component when designing for environments exceeding standard temperature ratings. Ensure the selected inductance value aligns with the required ripple current and saturation characteristics. Verify that the physical footprint fits within the PCB layout constraints. Consider the AEC-Q200 certification if the application mandates automotive-grade reliability standards.

Common Mode Chokes Part Context

This part belongs to the MSD1278H series, which distinguishes itself from the standard MSD1278 line through enhanced high-temperature capabilities. The series provides shielded coupled inductors suitable for space-constrained designs requiring magnetic isolation between windings. The 'MED' suffix typically denotes a specific tolerance or packaging variation within the manufacturer's catalog structure.

Common Mode Chokes Replacement Considerations

MSD1278H-473MLB is listed as an alias for this component. Verify functional equivalence before substitution.