0819-74H

Overview

The Delevan 0819-74H is a fixed axial leaded RF inductor from the 0819 series. It features an unshielded molded coil design with a nominal inductance of 120 µH and a tight tolerance of 3%. The component exhibits a maximum DC resistance of 16 Ohms and supports a maximum DC current of 54.5 mA. Key electrical characteristics include a minimum Q factor of 30 and a self-resonant frequency of 440 MHz. Physically, it measures 5.08 mm in length and 1.98 mm in diameter, designed for standard PCB mounting.

Feature Summary

• Unshielded molded construction for specific RF circuit integration
• Axial leaded termination style for through-hole PCB mounting
• High self-resonant frequency capability for RF applications

Applications

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

Procurement Notes

Verify the exact part number suffix to confirm packaging configuration, as variations such as 'R' may indicate reel packaging while other suffixes might denote tape-and-reel or bulk formats. Confirm RoHS compliance status directly with the manufacturer documentation, as some listings indicate non-compliance. Ensure the supplier provides the official datasheet to validate the 120 µH inductance and 54.5 mA current rating specifications before finalizing procurement.

Selection Notes

Select this component when a high-inductance value is required within an RF application context. The 3% tolerance ensures precise circuit tuning compared to wider tolerance alternatives. Consider the 16 Ohm DC resistance and 54.5 mA current limit to ensure compatibility with the target circuit's power budget. The unshielded design requires careful layout consideration to minimize electromagnetic interference with adjacent components.

Part Context

This component belongs to the Delevan 0819 series of fixed RF inductors. The series is characterized by molded unshielded coils with axial leads. Similar parts in the family include the 0819-10H (270 nH) and 0819-48F (10 µH), which share the same physical footprint but differ significantly in inductance values and current handling capabilities.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Verify mechanical dimensions and electrical parameters against alternative manufacturers' offerings if direct substitution is required.

FAQ

What is the self-resonant frequency of the 0819-74H?

The self-resonant frequency is 440 MHz.

Is the 0819-74H shielded?

No, the 0819-74H features an unshielded molded coil design.