MSD1278H-104KED

Common Mode Chokes Overview

The Coilcraft MSD1278H-104KED 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 provides an inductance of 100 µH with a 10% tolerance. It supports a maximum DC current of 2.3 A and has a maximum DC resistance of 121 mOhms. The device operates within a temperature range of -40°C to +125°C and holds AEC-Q200 qualification.

Common Mode Chokes Feature Summary

• Magnetic shielding for compact packaging and tight winding-to-winding coupling
• High-temperature design suitable for demanding thermal environments
• AEC-Q200 qualified for automotive reliability standards

Common Mode Chokes Applications

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

Common Mode Chokes Procurement Notes

Verify the specific suffix 'H' indicates the high-temperature variant compared to standard MSD1278 models. Confirm the 121 mOhms DCR and 2.3 A current ratings match the target circuit requirements. Ensure the 100 µH inductance value aligns with the design specifications. Check for AEC-Q200 certification if automotive compliance is mandatory.

Common Mode Chokes Selection Notes

Select this component when high thermal stability is required alongside magnetic shielding. The 1:1 coupling ratio suits balanced power applications. Compare against the standard MSD1278 series if lower temperature operation is acceptable. Verify footprint compatibility with the 12.3 mm x 12.3 mm package size during PCB layout.

Common Mode Chokes Part Context

This part belongs to the MSD1278H series of high-temperature shielded coupled power inductors manufactured by Coilcraft. It shares the physical footprint with the standard MSD1278 series but offers enhanced thermal performance. The series is designed for applications requiring robust magnetic shielding and reliable operation under elevated temperatures.

Common Mode Chokes Replacement Considerations

MSD1278-104KED is a related model in the standard temperature range series. Verify if the reduced operating temperature limit of the standard version meets the application requirements.