HM78D-1210100MLFTR

Overview

The HM78D-1210100MLFTR is a shielded two-coil inductor array manufactured by TT Electronics/BI Magnetics. It features a surface-mount design with dimensions of 12.5 mm in length and width, and a height of 10.5 mm. The component provides an inductance of 10 µH when connected in parallel and 41.12 µH in series, with a tolerance of ±20%. It operates within a temperature range of -40°C to +85°C.

Feature Summary

• Shielded construction minimizes electromagnetic interference
• Dual-coil configuration supports series or parallel connectivity
• Surface-mount package facilitates automated assembly

Applications

• DC-DC converter circuits
• SEPIC topology implementations
• Portable electronic devices such as GPS systems and digital cameras

Procurement Notes

Verify the specific suffix 'LFTR' against the manufacturer's current datasheet to confirm packaging details and availability status. Cross-reference the part number with official distributor catalogs to ensure compatibility with existing supply chains and validate that no obsolete variants are being substituted inadvertently during procurement processes.

Selection Notes

Select this component for applications requiring compact dual-inductor solutions with magnetic shielding. Ensure the operating environment stays within the specified -40°C to +85°C range. Verify that the 10 µH parallel or 41.12 µH series inductance values align with the circuit design requirements before integration into the final assembly.

Part Context

This model belongs to the HM78D series of shielded surface-mount coupled inductors from TT Electronics/BI Magnetics. The series is designed for high-efficiency power conversion applications, offering robust current handling and low profile characteristics suitable for space-constrained consumer electronics and industrial control systems.

Replacement Considerations

Direct substitutes include models like the SRF1280-680M from Bourns Inc., which offer similar form factors and electrical characteristics. Always verify pinout compatibility and thermal performance specifications before replacing the original component in an existing design.

FAQ

What is the inductance value when the coils are connected in parallel?

When connected in parallel, the inductance value is 10 µH.

Is the HM78D-1210100MLFTR magnetically shielded?

Yes, the component features a shielded construction to reduce electromagnetic interference.