103R-681F

Overview

The Delevan 103R-681F is a surface-mount RF inductor with an inductance of 680 nH and a tolerance of 1%. It features an unshielded design and a maximum DC resistance of 520 mOhms. The component supports a maximum DC current of 435 mA and has a minimum Q factor of 52. Its self-resonant frequency is 175 MHz. The package dimensions are 2.92 mm in length, 2.66 mm in width, and 2.41 mm in height.

Feature Summary

• Surface-mount axial-style RF inductor
• Unshielded construction for minimal magnetic interference
• High precision 1% inductance tolerance

Applications

• RF circuit filtering
• Impedance matching networks
• High-frequency signal processing

Procurement Notes

Verify the specific manufacturer datasheet to confirm RoHS compliance status and detailed packaging quantities. Ensure the ordering suffix matches the required reel quantity. Confirm that the unshielded variant aligns with the electromagnetic compatibility requirements of the target application environment.

Selection Notes

Select this component when a precise 680 nH value is required in a compact SMD footprint. The 1% tolerance ensures tight parameter control for critical RF stages. Consider the 520 mOhm DCR limit for power loss calculations and verify that the 435 mA current rating exceeds the peak operational current of the circuit.

Part Context

This part belongs to the Delevan 103R series of fixed RF inductors. It utilizes a non-standard two-lead surface mount configuration. The series is designed for high-frequency applications requiring stable inductance values with low parasitic effects typical of unshielded air-core or similar constructions.

Replacement Considerations

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