SD18-821-R

Fixed Inductors Overview

The SD18-821-R is a surface-mount power inductor from Eaton Electronics, featuring an 820 µH nominal inductance with a ±20% tolerance. It operates within a temperature range of -40°C to +85°C and utilizes a ferrite core. The component exhibits a maximum DC resistance of 12.35 Ω and a saturation current of 113 mA at 100 kHz test frequency. Its physical dimensions are 12 mm x 12 mm x 7.1 mm (max height), designed for compact SMD applications.

Fixed Inductors Feature Summary

• Low profile metalized shielded drum core construction
• Ferrite core material for stable performance
• Surface mount terminal configuration

Fixed Inductors Applications

• High current power supply circuits
• DC-DC converter filtering
• General purpose power electronics

Fixed Inductors Procurement Notes

Verify the specific datasheet version for the SD18-821-R to confirm exact electrical tolerances and thermal ratings. Ensure compatibility with automated pick-and-place equipment due to the surface mount package style. Cross-reference manufacturer documentation for any updates regarding RoHS compliance status or recommended soldering profiles to guarantee reliable assembly and long-term operational integrity.

Fixed Inductors Selection Notes

Select this component when a compact 820 µH inductance is required with moderate current handling capabilities. The 12.35 Ω DCR suggests suitability for lower current applications where voltage drop is acceptable. Consider the 113 mA saturation limit carefully against peak load requirements to prevent inductance degradation during transient conditions.

Fixed Inductors Part Context

This part belongs to the SD18 series of low-profile metalized shielded drum core power inductors manufactured by Eaton Electronics Division. The series is characterized by its small footprint and robust shielding, making it suitable for space-constrained designs requiring reliable magnetic performance in power conversion stages.

Fixed Inductors Replacement Considerations

Direct substitutes must match the 820 µH inductance, 12x12x7.1mm package, and similar saturation current characteristics. Verify pinout and mounting hole configurations if mechanical constraints are critical.