0819-38H

Overview

The Delevan 0819-38H is an axial leaded RF inductor with a nominal inductance of 3.9 µH and a tolerance of 3%. It features a molded unshielded construction with a maximum DC resistance of 1.5 Ω and a minimum Q factor of 30. The component supports a maximum DC current of 178 mA and has a self-resonant frequency of 47 MHz. Physical dimensions include a length of 5.08 mm and a diameter of 1.98 mm, designed for PCB mount applications.

Feature Summary

• Molded unshielded coil construction for general-purpose RF applications
• Axial leaded termination style suitable for through-hole PCB mounting
• High self-resonant frequency capability relative to inductance value

Applications

• RF circuit filtering
• Impedance matching networks
• General purpose inductive components in radio frequency systems

Procurement Notes

Verify RoHS compliance status as documentation indicates non-compliance for the standard 0819 series. Confirm axial lead dimensions and molding material specifications against design requirements. Ensure PCB layout accommodates the 5.08 mm length and 1.98 mm diameter. Check for available datasheets confirming the 178 mA current rating and 1.5 Ω DCR limits before finalizing procurement.

Selection Notes

Select this component when a 3.9 µH inductance with tight 3% tolerance is required for RF circuits. Consider the unshielded nature for placement away from sensitive signal paths. Evaluate the 178 mA current limit against peak operating currents. Compare self-resonant frequency performance against circuit bandwidth requirements to ensure adequate isolation at target frequencies.

Part Context

The 0819 series represents Delevan's line of molded axial RF inductors. These components utilize iron or ferrite cores depending on the specific suffix variant. The series offers standardized physical dimensions across various inductance values, facilitating consistent PCB layout strategies for multiple designs within the same product family.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data. Verify mechanical fitment and electrical parameters if considering alternative manufacturers. Cross-reference with other Delevan 0819 variants only if inductance and tolerance differences are acceptable.