1025R-90H

Fixed Inductors Overview

The Delevan 1025R-90H is a fixed, unshielded RF inductor designed for through-hole axial mounting. It features a molded construction with an iron core and offers an inductance of 820 µH with a tight tolerance of ±3%. The component supports a maximum DC current of 29 mA and exhibits a maximum DC resistance of 65 ohms. It operates within a temperature range of -55°C to +105°C and achieves a self-resonant frequency of 3.8 MHz.

Fixed Inductors Feature Summary

• Molded unshielded design suitable for high-frequency RF applications
• Axial leaded package for reliable through-hole PCB integration
• Iron core construction providing stable inductance characteristics

Fixed Inductors Applications

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

Fixed Inductors Procurement Notes

Verify the specific suffix 'H' against official manufacturer documentation to confirm the exact electrical parameters, particularly the 3% tolerance and 65-ohm resistance values. Ensure that the axial lead configuration matches the target PCB layout requirements. Confirm RoHS compliance status if environmental regulations apply to the final assembly.

Fixed Inductors Selection Notes

Select this component when a high-inductance value is required in a compact axial form factor. The 3% tolerance provides precision for critical RF tuning applications. Consider the 65-ohm DC resistance impact on circuit efficiency and the 29 mA current limit during thermal analysis. Verify that the 3.8 MHz self-resonant frequency aligns with the operational bandwidth.

Fixed Inductors Part Context

This part belongs to the Delevan 1025R series, which specializes in molded, unshielded RF inductors. The series is characterized by axial leads and iron cores, catering to applications requiring robust performance in radio frequency environments. The 1025R designation indicates a specific line of fixed inductors optimized for stability and reliability.

Fixed Inductors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.