HM78D-1284R7MLFTR

Overview

The HM78D-1284R7MLFTR is a shielded surface mount coupled inductor array manufactured by TT Electronics/BI Magnetics. It features two coils with an inductance of 4.7 µH at ±20% tolerance. In parallel configuration, it offers 7.4 A rated current and 14.9 A saturation current with 19 mΩ DCR. In series configuration, it provides 2.35 µH inductance, 14.9 A rated current, and 76 mΩ DCR. The component measures 12.50 mm x 12.50 mm x 4.5 mm and operates between -40°C and +125°C.

Feature Summary

• Dual-coil shielded design for electromagnetic interference reduction
• Configurable parallel or series connection modes
• High saturation current capability for power applications

Applications

• DC-DC converter output filtering
• Power supply input stages
• Point-of-load regulation circuits

Procurement Notes

Verify the specific suffix 'MLFTR' to ensure correct packaging and termination specifications. Confirm availability status as distribution channels may vary. Cross-reference electrical parameters against schematic requirements before integration. Ensure storage conditions comply with moisture sensitivity level guidelines to maintain solderability and performance integrity during assembly.

Selection Notes

Select this component when high current density and compact footprint are required. The parallel configuration supports higher current loads compared to series mode. Verify thermal management needs based on DC resistance losses. Ensure the operating temperature range aligns with the system environment constraints.

Part Context

Part of the HM78D series of surface mount coupled inductors. Designed for high-power density applications requiring magnetic coupling between windings. Manufactured by TT Electronics/BI Magnetics under the BI Technologies brand portfolio.

Replacement Considerations

SRF1280-4R7M by Bourns Inc. is a documented direct substitute.