HM78D-1210680MLFTR

Overview

The HM78D-1210680MLFTR is a surface mount coupled inductor from the HM78D series, manufactured by TT Electronics/BI Magnetics. It features two coils with a parallel inductance of 68 µH and a series inductance of 272 µH, both at a tolerance of ±20%. The component supports a maximum DC current of 4.45 A and has a maximum DC resistance of 98 mOhms. Its physical dimensions are 12.5 mm in length, 12.5 mm in width, and 10.5 mm in height. It operates within a temperature range of -40°C to +85°C and utilizes SMD/SMT termination.

Feature Summary

• Dual-coil architecture providing configurable series or parallel connection options for flexible circuit design.
• Shielded construction to minimize electromagnetic interference and magnetic flux leakage.
• Surface mount package optimized for automated assembly processes.

Applications

• Power supply filtering in multi-rail systems
• DC-DC converter input/output stages
• Signal processing circuits requiring coupled inductance

Procurement Notes

Verify the manufacturer part number HM78D-1210680MLFTR against official TT Electronics documentation to confirm specifications. Ensure compatibility with surface mount assembly processes. Check for RoHS compliance status as indicated in the datasheet. Confirm availability through authorized distributors, as stock levels may vary. Validate that the 68 µH inductance and 4.45 A current rating meet specific application requirements before procurement.

Selection Notes

Select this component when a shielded coupled inductor with 68 µH parallel inductance is required. Consider the 4.45 A current rating and 98 mOhm DCR for power efficiency needs. The 12.5 x 12.5 mm footprint must fit the PCB layout constraints. Verify that the operating temperature range of -40°C to +85°C suits the environmental conditions. Compare with other HM78D variants if different inductance values are needed.

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 in standardized footprints. These inductors are designed for high-performance applications requiring compact size and reliable operation in power electronics and signal conditioning circuits.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult official manufacturer cross-reference lists for potential alternatives.