105R-182G

Overview

The Delevan 105R-182G is a fixed surface-mount inductor designed for radio frequency applications. It features an unshielded wirewound construction with a ferrite core, housed in a non-standard package with two leads. The component provides an inductance of 1.8 µH with a tolerance of ±2%. It supports a maximum DC current of 250 mA and has a maximum DC resistance of 1.5 Ohms. The self-resonant frequency is specified at 66 MHz, with a minimum Q factor of 30 tested at 7.9 MHz. Operating temperatures range from -55°C to +125°C.

Feature Summary

• Unshielded wirewound design suitable for specific RF circuit layouts
• Ferrite core construction for stable inductance characteristics
• Standard SMD/SMT termination style for PCB mounting

Applications

• Radio Frequency (RF) circuits
• Surface Mount Technology (SMT) assembly
• General purpose inductive filtering

Procurement Notes

Verify the exact physical dimensions against your PCB footprint, as the datasheet classifies this part as having a non-standard package size rather than a standard metric inch code. Confirm that the unshielded nature of the component aligns with your electromagnetic interference requirements. Ensure the 250 mA current rating meets your circuit's operational demands without exceeding thermal limits.

Selection Notes

Select this component when an unshielded inductor is required to minimize cost or size constraints where shielding is unnecessary. Compare the 1.8 µH value and 2% tolerance against circuit simulation results. Consider the higher DC resistance compared to shielded variants if power efficiency is critical. Verify lead compatibility with automated placement equipment due to the non-standard form factor.

Part Context

This component belongs to the Delevan fixed inductor portfolio, specifically utilizing wirewound technology on a ferrite core. It is distinct from the shielded S1008R series by its lack of magnetic shielding and unique package geometry. The product line targets general RF applications requiring precise inductance values with standard tolerance levels.

Replacement Considerations

The S1008R-182G offers similar electrical specifications but includes shielding and a standard 1008 package. Substitution requires verifying mechanical fit due to the non-standard package of the 105R-182G. Ensure the replacement maintains the 1.8 µH inductance and acceptable DC resistance limits.