0819-78K

Overview

The Delevan 0819-78K is a leaded RF inductor featuring a molded unshielded coil construction. It provides an inductance of 180 µH with a tolerance of 10%. The component exhibits a maximum DC resistance of 20 Ohms and supports a maximum DC current of 49 mA. Key electrical characteristics include a minimum Q factor of 35 and a self-resonant frequency of 7.5 MHz. Designed for PCB mounting, it utilizes axial termination.

Feature Summary

• Molded unshielded coil construction
• Axial leaded termination style
• High Q factor performance

Applications

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

Procurement Notes

Verify the specific manufacturer source, as API Delevan operations have undergone restructuring. Confirm RoHS compliance status directly with the supplier, as historical data indicates non-compliance for some variants in this series. Ensure the 10% tolerance specification matches design requirements before ordering.

Selection Notes

Select this component when high inductance values are required in a leaded form factor. The 20 Ohm DC resistance limits current handling to 49 mA, making it suitable for low-current signal paths rather than power delivery. Compare against shielded alternatives if electromagnetic interference mitigation is critical for the application.

Part Context

This part belongs to the Delevan 0819 series of fixed inductors. The series offers various inductance values through standardized molding processes. The 'K' suffix typically denotes a 10% tolerance rating within the product line, distinguishing it from tighter tolerance variants like the 'F' series.

Replacement Considerations

The 0819-78F serves as a direct substitute offering identical physical dimensions and electrical parameters but with a stricter 1% tolerance. Verify that the tighter tolerance meets cost constraints while providing improved precision for the target circuit.