HM78D-1286R8MLFTR

Overview

The HM78D-1286R8MLFTR is a shielded surface-mount coupled inductor array manufactured by TT Electronics/BI Magnetics. It features two coils with an inductance of 6.8 µH per coil. When connected in parallel, the total inductance is 6.8 µH; when connected in series, it reaches 27.2 µH. The component has a maximum DC current rating of 18.4 A and a DC resistance (DCR) of 3.5 mΩ. It operates within a temperature range of -40°C to +85°C and measures 12.5 mm x 12.5 mm x 8.05 mm.

Feature Summary

• Shielded magnetic design for noise suppression
• Dual-coil configuration supporting series or parallel connections
• High current handling capability up to 18.4 A
• Surface-mount package for automated assembly

Applications

• Power filtering in high-current circuits
• Energy storage in power conversion stages
• Noise suppression in sensitive electronic systems

Procurement Notes

Verify the exact part number HM78D-1286R8MLFTR against manufacturer datasheets to confirm electrical parameters such as inductance tolerance and saturation current. Ensure compatibility with surface-mount reflow processes and check for any specific handling requirements due to the high current ratings.

Selection Notes

Select this component when a compact, shielded dual-coil inductor is required for high-current applications. Consider the 6.8 µH base inductance and 18.4 A current rating. Verify that the 12.5 mm x 12.5 mm footprint fits the PCB layout and that the operating temperature range meets environmental conditions.

Part Context

This component belongs to the HM78D series of surface-mount coupled inductors from TT Electronics/BI Magnetics. The series offers various inductance values and current ratings, designed for space-constrained power electronics. The HM78D-1286R8MLFTR specifically provides a 6.8 µH option with high current capacity.

Replacement Considerations

Direct substitutes may include other shielded dual-coil SMD inductors with similar 6.8 µH inductance and >18 A current ratings. Verify pinout, footprint dimensions (12.5x12.5x8.05mm), and thermal characteristics before substitution.