103R-183GS

Overview

The Delevan 103R-183GS is a fixed surface-mount RF inductor from the 103 series. It features an inductance of 18 µH with a tolerance of ±2%. The component has a maximum DC current rating of 130 mA and a maximum DC resistance of 5.8 Ohms. It operates within a temperature range of -55°C to 125°C. Key electrical specifications include a Q value of 25 at 2.5 MHz and a self-resonant frequency of 28 MHz. The physical dimensions are 2.54 mm x 2.54 mm x 1.91 mm.

Feature Summary

• Unshielded construction utilizing ferrite core material for stable RF performance
• Surface-mount design compatible with standard PCB assembly processes
• High-temperature operational capability suitable for demanding environments

Applications

• RF circuit filtering
• Impedance matching networks
• General-purpose RF signal processing

Procurement Notes

Verify RoHS compliance status carefully, as documentation indicates non-compliance. Confirm lead availability through authorized distributors, as standard delivery times may extend significantly. Ensure the specific suffix matches project requirements, noting that packaging quantities typically follow manufacturer reel standards. Cross-reference datasheets for updated thermal and electrical limits before final integration.

Selection Notes

Select this component when an unshielded 18 µH inductor is required for low-current RF applications. Consider the 5.8 Ohm DC resistance impact on circuit efficiency. Verify that the 130 mA current rating exceeds peak operational demands. Compare against shielded alternatives if electromagnetic interference mitigation is critical for the specific system layout.

Part Context

This part belongs to the Delevan 103 series of fixed RF inductors. The series offers various inductance values optimized for radio frequency applications. Components in this family share similar footprint dimensions, facilitating board space conservation. The 103R-183GS specifically targets applications requiring moderate inductance with precise tolerance characteristics.

Replacement Considerations

The 103R-183KS serves as a verified substitute within the same series, offering identical electrical parameters but with a different tolerance specification.