4448R-10M

Overview

The Delevan 4448R-10M is a surface-mount coupled inductor from the 4448/R series, designed for high-current applications. It features a toroidal core construction with two coils and SMD/SMT termination style for PCB mounting. The component provides an inductance of 5 µH in parallel configuration and 20 µH in series, with a tolerance of 20%. It supports a maximum DC current of 3.3 A and exhibits a maximum DC resistance of 27 mΩ. The physical dimensions are 13.71 mm in length, 13.71 mm in width, and 7.87 mm in height.

Feature Summary

• High-current capability suitable for demanding power supply designs
• Toroidal core structure providing efficient magnetic coupling between coils
• Surface-mount technology (SMT) compatible for automated PCB assembly

Applications

• DC-DC converter circuits requiring coupled inductance
• Power management modules for embedded systems
• Signal filtering in mixed-signal electronic devices

Procurement Notes

Verify the specific suffix 'M' against the manufacturer's latest datasheet to confirm packaging and tape-and-reel specifications. Ensure compatibility with RoHS directives if required by your assembly standards. Cross-reference the part number with authorized distributors to confirm current availability and lead times, as stock levels may vary. Confirm that the 3.3 A current rating meets your circuit's thermal and electrical requirements before finalizing procurement.

Selection Notes

Select this component when a compact, high-current coupled inductor is needed for space-constrained PCB layouts. The 5 µH parallel inductance makes it suitable for interleaved phase applications in multiphase converters. Consider the 27 mΩ DCR for efficiency calculations in low-voltage, high-current paths. The SMT package facilitates automated placement, reducing assembly costs compared to through-hole alternatives.

Part Context

The 4448R-10M belongs to Delevan’s 4448/R series of surface-mount power inductors. This series is characterized by its molded toroidal design, which offers robust mechanical stability and consistent electromagnetic performance. The product falls under the broader category of power inductors and coupled inductors, serving critical roles in modern electronic power conversion systems.

Replacement Considerations

Consult official Delevan documentation for direct cross-references. Verify that any substitute maintains the 5 µH/20 µH inductance values, 3.3 A current rating, and identical footprint dimensions (13.71 x 13.71 x 7.87 mm). Ensure the replacement component supports SMT mounting and matches the original's thermal characteristics.