1025R-78F

Fixed Inductors Overview

The Delevan 1025R-78F is a fixed axial leaded RF inductor designed for through-hole PCB mounting. It features an unshielded molded construction with an iron core, providing an inductance of 270 µH and a tolerance of 1%. The component has a maximum DC resistance of 25 Ohms and supports a maximum DC current of 47 mA. Key electrical characteristics include a minimum Q factor of 30 at 7.9 MHz and a self-resonant frequency of 4 MHz. The physical dimensions are 6.35 mm in length and 2.41 mm in diameter, operating within a temperature range of -55°C to +105°C.

Fixed Inductors Feature Summary

• Molded unshielded construction with iron core
• Axial leaded termination for through-hole mounting
• High stability RF performance

Fixed Inductors Applications

• RF circuit filtering
• Impedance matching networks
• Signal processing circuits

Fixed Inductors Procurement Notes

Verify the specific suffix 'F' against official API Delevan documentation to confirm exact tolerance and parameter alignment. Ensure the procurement channel provides valid RoHS compliance certificates and datasheets matching the 1025R series specifications. Confirm that the supplier offers genuine components with traceable manufacturing records.

Fixed Inductors Selection Notes

Select this component when a 270 µH inductance with tight tolerance is required for RF applications. Consider the 47 mA current rating and 25 Ohm DCR limits during circuit design. Verify that the unshielded nature does not interfere with nearby sensitive components due to magnetic field exposure.

Fixed Inductors Part Context

This part belongs to the Delevan 1025R series of fixed RF inductors. The series utilizes molded technology with axial leads, offering consistent performance across various RF frequencies. The 1025R-78F variant specifically targets applications requiring higher inductance values within the standard axial form factor.

Fixed Inductors Replacement Considerations

Cross-reference with other 1025R series variants such as 1025R-20G or 1025R-52K only if inductance and current ratings align. No direct substitute part numbers are publicly confirmed for this specific model.