0819-20H

Overview

The Delevan 0819-20H is a fixed axial leaded inductor designed for radio frequency applications. It features a molded unshielded coil construction with an iron core, providing an inductance of 0.68 µH and a tolerance of 3%. The component exhibits a maximum DC resistance of 0.2 Ω and supports a maximum DC current of 485 mA. With a minimum Q factor of 40 and a self-resolving frequency of 440 MHz, it operates within a temperature range up to 105 °C. The physical dimensions are 5.08 mm in length and 1.98 mm in diameter.

Feature Summary

• Molded unshielded coil construction utilizing an iron core for stable RF performance
• Axial leaded termination style suitable for standard PCB mounting
• High self-resolving frequency capability for RF signal handling

Applications

• RF circuit filtering
• General purpose inductor tasks
• Signal processing circuits

Procurement Notes

Verify compliance requirements as the component contains lead and does not meet RoHS standards. Confirm that the manufacturing origin aligns with project regulatory needs. Ensure the axial package dimensions fit the designated PCB layout constraints. Check for availability of compatible reel packaging if automated assembly is required. Validate that the operating temperature range meets the environmental specifications of the final application.

Selection Notes

Select this component when a low-inductance value near 0.68 µH is required for RF stages. The unshielded design necessitates careful placement to avoid magnetic interference with adjacent components. Consider the 485 mA current limit when designing power paths. The iron core provides specific saturation characteristics distinct from air or ferrite cores. Verify that the 3% tolerance aligns with the circuit's precision requirements.

Part Context

This part belongs to the Delevan 0819 series of fixed RF inductors. The series offers various inductance values and tolerances through different suffix codes. The 0819-20H specifically targets lower inductance applications compared to higher-value variants in the same family. It shares the same physical footprint and mounting style as other members of the 0819 line.

Replacement Considerations

Cross-reference with other Delevan 0819 series parts for similar inductance values. Verify that substitute components match the 0.68 µH nominal value and 3% tolerance. Ensure replacement parts support the same 485 mA current rating and 0.2 Ω DC resistance. Confirm that any alternative maintains the axial leaded form factor and unshielded construction.