108-183GS

Overview

The Delevan 108-183GS is an unshielded fixed surface-mount inductor from the 108 series, utilizing a ferrite core. It provides an inductance of 18 µH with a tolerance of ±2%. The component supports a maximum DC current of 75 mA and features a maximum DC resistance of 4.4 Ohms. It exhibits a Q factor of 25 at 2.5 MHz and a self-resonant frequency of 28 MHz. Designed for operation between -55°C and 125°C, it measures 2.54 mm x 2.54 mm with a height of 1.91 mm.

Feature Summary

• Unshielded construction suitable for applications requiring minimal magnetic interference
• Ferrite core material optimized for RF choke performance
• Surface mount package designed for automated PCB assembly

Applications

• RF choke circuits
• Signal filtering in electronic systems
• General-purpose RF components

Procurement Notes

Verify RoHS compliance status prior to procurement, as this specific part number may contain lead or be non-compliant depending on manufacturing origin. Confirm availability through authorized distributors, noting that standard delivery times can extend significantly. Ensure the ordering suffix matches the required packaging format, such as tape and reel quantities, to align with production requirements.

Selection Notes

Select this component when a high-inductance value is required in a compact footprint. The 18 µH rating suits low-frequency RF filtering tasks. Consider the 75 mA current limit and 4.4 Ohm resistance for circuit impedance calculations. Verify thermal management capabilities within the specified temperature range during design integration.

Part Context

This component belongs to the Delevan 108 series of fixed inductors. The series offers various inductance values in a standardized small outline package. These parts are engineered for reliability in demanding electronic environments, providing consistent electrical characteristics across the operating temperature spectrum.

Replacement Considerations

Direct substitutes include the 108-183G (±2% tolerance) and S1008-183K (shielded variant). Cross-reference physical dimensions and electrical parameters carefully before substitution.