105-821J

Overview

The Delevan 105-821J is a fixed RF inductor with an inductance of 820 nH and a tolerance of ±5%. It features a maximum DC resistance of 650 mOhms and supports a maximum DC current of 385 mA. The component has a minimum Q factor of 30 and a self-resonant frequency of 155 MHz. It utilizes an unshielded design with standard two-lead termination for PCB mounting.

Feature Summary

• Unshielded wirewound construction for RF applications
• Standard axial lead termination for through-hole mounting
• Ferrite core material for stable inductance

Applications

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

Procurement Notes

Verify availability status as this component may be discontinued or subject to limited supply. Confirm RoHS compliance details directly with the manufacturer, as documentation indicates non-compliance in some records. Ensure the specific lead configuration matches the target PCB footprint requirements before finalizing procurement decisions.

Selection Notes

Select this part for applications requiring 820 nH inductance with moderate current handling up to 385 mA. The unshielded design requires careful layout consideration to minimize electromagnetic interference coupling. Verify that the 155 MHz self-resonant frequency aligns with the operational bandwidth of the target RF system.

Part Context

This component belongs to the Delevan 105/R series of RF inductors. It is distinct from shielded variants like the S1008 series and offers a traditional axial lead form factor compared to surface mount alternatives. The series is designed for general radio frequency applications requiring reliable inductive performance.

Replacement Considerations

Direct substitutes include the 105-821M (20% tolerance) and 105-821HS (3% tolerance). These variants share similar electrical characteristics but differ in tolerance specifications and potentially manufacturing batches.