SD3118-681-R

Fixed Inductors Overview

The Eaton SD3118-681-R is a fixed surface-mount power inductor from the SD3118 series. It features a nominal inductance of 680 µH with a tolerance of ±20%. The component utilizes a shielded drum core construction to minimize electromagnetic interference. Key electrical parameters include a maximum DC current rating of 0.101 A and an RMS current rating of 0.107 A. The DC resistance is specified at 16 Ω. The device is designed for PCB mounting and operates within a standard temperature range.

Fixed Inductors Feature Summary

• Shielded drum core design reduces magnetic flux leakage
• Compact surface-mount form factor suitable for space-constrained layouts
• Wirewound construction provides stable inductance characteristics

Fixed Inductors Applications

• DC-DC converter input/output filtering
• Power supply circuit energy storage
• General-purpose electronic signal processing

Fixed Inductors Procurement Notes

Verify the specific suffix 'R' indicates reel packaging when reviewing distributor listings. Confirm that the 16 Ω resistance value aligns with system loss requirements. Ensure the 0.101 A saturation current meets peak load demands. Cross-reference the datasheet revision date to ensure compatibility with current manufacturing standards.

Fixed Inductors Selection Notes

Select this component where high inductance values are required in a small footprint. The low current rating necessitates careful thermal management in high-density designs. Compare against alternative series if higher current handling or lower resistance is needed. Verify that the shielding type matches the EMI sensitivity of the surrounding circuitry.

Fixed Inductors Part Context

This part belongs to the Eaton SD3118 series of metalized shielded drum core power inductors. The series offers various inductance values tailored for different power applications. The SD3118 designation identifies the specific physical dimensions and core material used in this product line.

Fixed Inductors Replacement Considerations

SD3118-220-R shares the same package and series but differs in inductance (22 µH). SD3118-102-R is another variant within the same series with different electrical specifications. Direct substitution requires verifying current ratings and inductance requirements.