0819-58H

Overview

The Delevan 0819-58H is a leaded RF inductor featuring an unshielded molded coil construction. It provides a nominal inductance of 27 µH with a tight tolerance of 3%. The component exhibits a maximum DC resistance of 4.7 ohms and supports a maximum DC current of 100 mA. Key electrical characteristics include a minimum Q factor of 30 and a self-resonant frequency of 100 MHz. Designed for PCB mounting, it utilizes axial termination and measures 5.08 mm in length with a diameter of 1.98 mm.

Feature Summary

• Unshielded molded coil design for RF applications
• Axial leaded termination for through-hole PCB mounting
• Tight 3% inductance tolerance for precision circuits

Applications

• RF circuit filtering
• Impedance matching networks
• General purpose RF inductance

Procurement Notes

Verify the specific ordering suffix to confirm packaging configuration, as standard availability may vary between bulk reels and tape-and-reel formats. Confirm RoHS compliance status directly with the manufacturer or authorized distributors prior to procurement, as environmental declarations can change. Ensure the selected variant matches the required lead form and molding material specifications for the target application environment.

Selection Notes

Select this component when a 27 µH inductance value is required with strict 3% tolerance limits. The 100 mA current rating and 4.7 ohm DCR define the power handling capabilities; ensure operating conditions remain within these thermal limits. The unshielded design necessitates careful layout consideration to prevent magnetic coupling with adjacent components in dense PCB assemblies.

Part Context

This part belongs to the Delevan 0819 series of fixed RF inductors. The series offers various inductance values ranging from nanohenries to microhenries, all sharing a consistent molded unshielded physical profile. This specific model represents the higher inductance end of the standard range, utilizing ferrite core technology optimized for radio frequency stability.

Replacement Considerations

Cross-reference with other Delevan 0819 series variants if different inductance values are needed. Verify that substitute parts match the 5.08 mm x 1.98 mm axial footprint and 100 mA current rating. Check self-resonant frequency compatibility to ensure performance at the target operating frequency remains unaffected by alternative components.