103R-183K

Overview

The Delevan 103R-183K is an unshielded surface-mount RF inductor with an inductance of 18 µH and a tolerance of ±10%. It features a maximum DC resistance of 5.8 Ohms and a rated current of 130 mA. The component has a self-resonant frequency of 28 MHz and a minimum Q factor of 25 at 2.5 MHz. Its physical dimensions are 2.54 mm in length, 2.54 mm in width, and 1.91 mm in height.

Feature Summary

• Unshielded wirewound construction for general-purpose RF applications
• Ferrite core material providing stable inductance characteristics
• Standard two-terminal SMD package for PCB mounting

Applications

• RF signal processing circuits
• Impedance matching networks
• Filtering components in radio frequency systems

Procurement Notes

Verify the specific suffix designation during procurement, as variations such as 'KS' or 'GS' may indicate different packaging formats like reels or trays compared to the base model. Confirm RoHS compliance status directly with the manufacturer, as documentation indicates potential variations in environmental certification across similar part numbers within the series.

Selection Notes

Select this component when an unshielded inductor is required for RF frequencies around 28 MHz. Ensure the circuit design accommodates the 5.8 Ohm DC resistance and the 130 mA current limit. Consider thermal management due to resistive losses and verify that the non-shielded design does not interfere with nearby sensitive traces.

Part Context

This part belongs to the Delevan 103/R series of fixed RF inductors. These components are designed for surface-mount technology and utilize ferrite cores. The series offers various inductance values tailored for radio frequency applications, distinguishing them from power chokes by their higher impedance and lower current ratings.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.