103R-821JS

Overview

The Delevan 103R-821JS is an unshielded surface-mount RF inductor from the 103/R series. It features a nominal inductance of 820 nH with a 5% tolerance and a maximum DC resistance of 530 mOhms. The component supports a maximum DC current of 430 mA and achieves a minimum Q factor of 22 at its self-resonant frequency of 160 MHz. Designed for PCB mounting, it measures 2.54 mm in length and width, with a height of 1.91 mm.

Feature Summary

• Unshielded chip construction suitable for general-purpose RF applications
• Standard SMD/SMT termination style for direct PCB integration
• Ferrite core material providing stable inductance characteristics

Applications

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

Procurement Notes

Verify RoHS compliance status directly with the manufacturer or authorized distributors, as documentation indicates detailed verification is required. Confirm the specific packaging quantity and reel specifications prior to ordering, as supply chain data may vary by region and distributor channel.

Selection Notes

Select this component when an unshielded inductor is required for RF applications operating near 160 MHz. Ensure the design accommodates the 430 mA current limit and 530 mOhms DC resistance. Compare against shielded alternatives if magnetic interference mitigation is necessary for the target application environment.

Part Context

This part belongs to the Delevan 103/R series of fixed RF inductors. It shares the same physical footprint and core technology with variants like the 103-821HS and 103R-681HS, differing primarily in inductance value and tolerance specifications within the same package size family.

Replacement Considerations

The 103-821HS offers identical dimensions and similar electrical parameters but specifies a tighter 3% tolerance instead of 5%. Designers should verify if the stricter tolerance requirement impacts cost or availability before substituting.