MSD1278H-183MED

Common Mode Chokes Overview

The MSD1278H-183MED is a shielded coupled inductor from the Coilcraft MSD1278H series, designed for high-temperature automotive applications. It features a ferrite core and SMD/SMT termination style with dimensions of 12.3 mm x 12.3 mm x 8.05 mm. The component offers an inductance of 18 µH in parallel configuration (72 µH in series) with a 20% tolerance. It supports a maximum DC current of 3.08 A and has a maximum DC resistance of 80 mOhms. Certified to AEC-Q200 standards, it operates within a temperature range of -40°C to +85°C.

Common Mode Chokes Feature Summary

• AEC-Q200 qualified for automotive reliability requirements
• Shielded coupled inductor design with ferrite core
• High-temperature operation capability up to +85°C
• Surface-mount package optimized for PCB space efficiency

Common Mode Chokes Applications

• Automotive power supply circuits
• DC-DC converter input/output filtering
• High-temperature electronic modules

Common Mode Chokes Procurement Notes

Verify the specific suffix MED against official Coilcraft documentation to confirm exact electrical tolerances and packaging details. Ensure the selected variant meets the required thermal management specifications for the target application environment. Cross-reference part numbers carefully as suffixes often denote critical differences in performance or availability.

Common Mode Chokes Selection Notes

Select this component when designing for automotive environments requiring robust coupled inductors with high saturation characteristics. Consider the 12.3 mm footprint and 80 mOhms DCR for efficiency calculations. Verify that the 3.08 A current rating aligns with the system's peak load requirements and thermal constraints.

Common Mode Chokes Part Context

This part belongs to the MSD1278H series of high-temperature coupled inductors manufactured by Coilcraft. The series is engineered for demanding automotive applications where reliability under thermal stress is critical. It complements other MSS/MSD series components by offering coupled configurations in a compact shielded package.

Common Mode Chokes Replacement Considerations

Check for MSD1278T-183MLD as a potential alternative within the same family, noting differences in temperature rating if applicable. Verify pinout compatibility and electrical parameters before substitution.