HM78D-7556R8MLFTR

Overview

The HM78D-7556R8MLFTR is a surface mount coupled inductor from the HM78D series, manufactured by TT Electronics/BI Magnetics. It features a shielded two-coil array design with an inductance of 6.8 µH when connected in parallel and 29.38 µH in series. The component has a tolerance of ±20% and a maximum DC current rating of 1.41 A. Its maximum DC resistance is 41.8 mOhms. The physical dimensions are 7.7 mm in length, 7.7 mm in width, and 4.8 mm in height. It operates within a temperature range of -40°C to +85°C and is supplied in a reel package.

Feature Summary

• Shielded two-coil inductor array construction
• Surface mount (SMD/SMT) installation style
• Dual connection options for parallel or series configurations

Applications

• Power supply filtering circuits
• DC-DC converter input/output stages
• Signal processing applications requiring coupled inductance

Procurement Notes

Verify the specific manufacturer part number HM78D-7556R8MLFTR against official TT Electronics documentation to ensure accuracy. Confirm that the required inductance values and current ratings align with your circuit design specifications before procurement. Check for any RoHS compliance details in the official datasheet. Ensure the reel packaging format matches your automated assembly equipment requirements.

Selection Notes

Select this component when a compact, shielded coupled inductor is needed for power management applications. The 7.7mm x 7.7mm footprint suits space-constrained designs. Consider the 6.8 µH parallel inductance and 1.41 A current rating for suitability in low-to-medium power conversion stages. Verify thermal performance within the specified -40°C to +85°C operating range.

Part Context

This component belongs to the HM78D series of surface mount coupled inductors produced by TT Electronics/BI Magnetics. The series offers various inductance values and current ratings in a standardized small outline package. These components are designed for integration into modern electronic systems requiring efficient magnetic coupling and shielding to minimize electromagnetic interference.

Replacement Considerations

Publicly confirmed substitute part numbers for HM78D-7556R8MLFTR were not found in the provided source material. Consult official manufacturer cross-reference lists for potential alternatives.