DR127-221-R

Fixed Inductors Overview

The Eaton DR127-221-R is a shielded drum core wirewound power inductor from the DR series. It features a ferrite core and offers an inductance of 220 µH with ±20% tolerance. The component has a maximum DC resistance of 376 mΩ, a saturation current of 2.43 A, and a rated current of 1.29 A. It utilizes a surface mount package measuring 12.5 mm x 12.5 mm x 8.0 mm and operates within a temperature range of -40°C to +125°C.

Fixed Inductors Feature Summary

• Shielded drum core construction minimizes electromagnetic interference
• Wirewound design on ferrite core ensures high efficiency
• Surface mount format facilitates automated assembly

Fixed Inductors Applications

• DC-DC converter output filtering
• Power supply input stages
• General-purpose energy storage in switching circuits

Fixed Inductors Procurement Notes

Verify the specific ordering suffix against the manufacturer datasheet to confirm packaging options such as tape and reel quantities. Confirm RoHS compliance status and moisture sensitivity level requirements for your manufacturing process. Ensure the selected variant matches the required thermal and electrical specifications for the target application environment.

Fixed Inductors Selection Notes

Select this component when a shielded inductor with moderate inductance and high saturation current is required. Compare the 376 mΩ DCR and 1.29 A rated current against circuit load requirements. Consider the 12.5 mm footprint and 8.0 mm height constraints relative to available PCB space and clearance requirements.

Fixed Inductors Part Context

This part belongs to the Eaton DR series of high-power shielded drum core inductors. The series provides various inductance values and current ratings within standardized SMD footprints. The DR127-221-R represents a specific configuration optimized for applications requiring robust magnetic shielding and reliable performance under varying load conditions.

Fixed Inductors Replacement Considerations

Consult official Eaton documentation for confirmed cross-reference part numbers. Verify that any substitute maintains identical or superior electrical parameters, physical dimensions, and thermal characteristics.