HM78D-7553R3MLFTR

Overview

The HM78D-7553R3MLFTR is a shielded surface-mount coupled inductor array manufactured by TT Electronics/BI Magnetics. It features two coils with a parallel inductance of 3.3 µH and a tolerance of 20%. The component supports a maximum DC current of 3.94 A and has a maximum DC resistance of 0.016 Ω. Its physical dimensions are 7.7 mm x 7.7 mm x 4.8 mm, suitable for compact designs. It operates within a temperature range of -40°C to +125°C and is supplied in tape and reel packaging.

Feature Summary

• Shielded two-coil inductor array design
• Compact surface-mount footprint
• High current handling capability

Applications

• Power management circuits
• Signal conditioning
• Noise suppression

Procurement Notes

Verify the specific part number HM78D-7553R3MLFTR against official TT Electronics documentation to confirm electrical parameters and mechanical dimensions. Ensure compatibility with surface-mount assembly processes. Check for RoHS compliance status in the latest datasheet. Confirm package type is tape and reel for automated placement.

Selection Notes

Select this component for applications requiring high current density in a small form factor. The shielded construction minimizes electromagnetic interference. Verify that the 3.94 A current rating meets circuit requirements. Consider the operating temperature range for environmental suitability.

Part Context

This component belongs to the HM78D series of coupled inductors from TT Electronics/BI Magnetics. The series is designed for power filtering and energy storage in electronic circuits. These components are typically used in compact power supply designs where space is limited.

Replacement Considerations

Check for direct substitutes within the HM78D series or equivalent shielded coupled inductors from other manufacturers. Ensure pinout and inductance values match. Verify current ratings and physical dimensions for board compatibility.