0819-78H

Overview

The Delevan 0819-78H is a leaded RF inductor featuring an axial termination style and unshielded molded construction. It provides an inductance of 180 uH with a tolerance of 3% and a maximum DC resistance of 20 ohms. The component supports a maximum DC current of 49 mA and achieves a minimum Q factor of 35. Its self-resonant frequency is specified at 7.5 MHz. Designed for PCB mounting, the unit measures 5.08 mm in length and 1.98 mm in diameter.

Feature Summary

• Molded unshielded coil construction for RF applications
• Axial leaded termination for standard PCB mounting
• High inductance value with tight tolerance stability

Applications

• RF circuit filtering
• Impedance matching networks
• General purpose RF signal processing

Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm exact electrical tolerances and material specifications. Ensure compatibility with existing PCB footprint dimensions and thermal requirements. Confirm RoHS compliance status as indicated in the latest datasheet revision before finalizing procurement orders.

Selection Notes

Select this component when a high-inductance value is required within a compact axial form factor. The unshielded design necessitates careful layout consideration to minimize electromagnetic interference with adjacent traces. Verify that the operating current remains below the 49 mA limit to prevent saturation or excessive heating during continuous operation.

Part Context

This part belongs to the Delevan 0819 series of fixed RF inductors. The series offers various inductance values tailored for radio frequency environments. The 0819-78H specifically addresses applications requiring higher inductance within the molded unshielded category, distinguishing it from lower-value variants in the same family.

Replacement Considerations

Consult official substitution guides for equivalent parts. Cross-referencing requires matching inductance, tolerance, current rating, and physical dimensions.