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MSD1278H-393MED is listed in the Common Mode Chokes range at ChipApex. The manufacturer field lists Coilcraft. Its product description is CMC 39UH 3.12A 2LN SMD AEC-Q200. Review the specifications below when checking this part for your BOM.
Common Mode Chokes specifications for MSD1278H-393MED
- Description：CMC 39UH 3.12A 2LN SMD AEC-Q200
- Series：MSD1278H
- Mfr：Coilcraft
- Package：Strip
- Filter Type：-
- Number of Lines：2
- Current Rating (Max)：3.12A
- DC Resistance (DCR) (Max)：110mOhm
- Voltage Rating - DC：-
- Voltage Rating - AC：-
- Operating Temperature：-40°C ~ 125°C
- Ratings：AEC-Q200
- Approval Agency：-
- Features：-
- Mounting Type：Surface Mount
- Size / Dimension：0.484" L x 0.484" W (12.30mm x 12.30mm)
- Height (Max)：0.317" (8.05mm)
- Package / Case：Nonstandard
- Inductance @ Frequency：39 µH @ 100 kHz
- Impedance @ Frequency：-
Common Mode Chokes datasheet and documents for MSD1278H-393MED
Common Mode Chokes Overview
The Coilcraft MSD1278H-393MED is a shielded coupled inductor from the MSD1278H series, designed for surface-mount applications. It features a ferrite core and offers an inductance of 39 µH at 100 kHz with a tolerance of 10%. The component supports a maximum DC current of 3.12 A and has a maximum DC resistance of 110 mΩ. It is constructed as a two-element device suitable for high-current environments.
Common Mode Chokes Feature Summary
- Shielded construction to minimize electromagnetic interference
- High saturation current capability for power applications
- Surface-mount package for automated assembly
Common Mode Chokes Applications
- Common mode chokes
- Power supply filtering
- DC-DC converter circuits
Common Mode Chokes Procurement Notes
Verify the specific suffix MED against official Coilcraft documentation to confirm terminal plating and packaging details. Ensure compatibility with your PCB footprint and reflow profile requirements. Cross-reference the part number with authorized distributors to confirm current availability and lead times before finalizing procurement plans.
Common Mode Chokes Selection Notes
Select this component when a shielded coupled inductor with 39 µH inductance and 3.12 A current rating is required. Consider the 110 mΩ DCR for efficiency calculations. Verify that the 10% tolerance meets circuit precision needs. Ensure the surface-mount form factor fits the available board space.
Common Mode Chokes Part Context
This part belongs to the MSD1278H series of shielded coupled inductors by Coilcraft. These components are engineered for high-current applications requiring compact footprints. The series utilizes ferrite cores and offers various inductance values and current ratings within a standardized surface-mount package.
Common Mode Chokes Replacement Considerations
Check for MSD1278H-393MLD or MSD1278H-393M as potential alternatives if the MED suffix denotes specific packaging or plating variations. Verify electrical parameters match exactly before substitution.
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