103R-390K

Overview

The Delevan 103R-390K is a fixed surface-mount RF inductor with an inductance of 0.039 µH and a tolerance of ±10%. It features a maximum DC resistance of 0.133 Ω and a rated current of 860 mA. The component utilizes a ferrite core and is housed in a nonstandard package size.

Feature Summary

• Unshielded construction for minimal magnetic interference
• Ferrite core material for stable RF performance
• Surface mount design for automated PCB assembly

Applications

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

Procurement Notes

Verify the specific package dimensions against your PCB footprint, as this component uses a nonstandard outline rather than a standard metric code. Confirm RoHS compliance status for your manufacturing requirements, as historical data indicates potential variations in lead content across different production batches or revisions.

Selection Notes

Select this part when a low-value inductance near 39 nH is required for high-frequency applications. Ensure the 860 mA current rating meets the circuit's operational demands. Consider the unshielded nature of the device regarding nearby sensitive components to prevent unwanted coupling effects.

Part Context

This component belongs to the Delevan 103 series of fixed inductors. The 'R' suffix typically denotes the shielded or specific variant within the broader product line, though this specific item is documented as unshielded. It serves as a passive filtering element in electronic assemblies requiring precise small-signal characteristics.

Replacement Considerations

Direct substitutes include other 39 nH SMD inductors from manufacturers such as Coilcraft or Murata. Verify that replacement parts match the 0.133 Ω DCR limit and 860 mA saturation current while fitting the unique physical envelope.