1025R-58F

Fixed Inductors Overview

The Delevan 1025R-58F is a fixed, unshielded molded RF inductor designed for through-hole mounting. It features an axial leaded package with dimensions of 0.095 inches diameter by 0.250 inches length (2.41mm x 6.35mm). The component provides an inductance of 39 µH with a tight tolerance of ±1%. It operates with a maximum DC current rating of 140 mA and exhibits a maximum DC resistance of 3.6 Ohms. The self-resonant frequency is specified at 20 MHz, ensuring performance stability in high-frequency applications.

Fixed Inductors Feature Summary

• Molded construction providing mechanical durability and environmental protection
• Unshielded design suitable for flexible circuit layout arrangements
• Axial leaded termination optimized for standard PCB mounting techniques

Fixed Inductors Applications

• RF signal processing circuits
• High-frequency filtering networks
• Impedance matching stages in communication systems

Fixed Inductors Procurement Notes

Verify the specific suffix designation to confirm compliance requirements, as manufacturing standards may vary between RoHS-compliant and non-compliant versions. Confirm that the axial lead spacing matches the target footprint. Ensure the selected variant meets the required thermal operating range for the intended environment before finalizing procurement orders.

Fixed Inductors Selection Notes

Select this component when a precise 39 µH inductance value is required with strict tolerance control for critical RF paths. The unshielded nature allows for strategic placement to minimize magnetic interference with nearby components. Consider the 140 mA current limit to ensure the inductor does not saturate under peak load conditions within the circuit design.

Fixed Inductors Part Context

This part belongs to the Delevan 1025/R series, which specializes in general-purpose and RF fixed inductors. The series utilizes iron core materials to achieve stable inductance values across various frequencies. These components are widely utilized in electronic assemblies requiring reliable passive filtering and energy storage solutions.

Fixed Inductors Replacement Considerations

Direct substitutes include other 39 µH axial RF inductors from manufacturers such as API Delevan or Coilcraft, provided they match the 3.6 Ohm DCR and 140 mA current rating constraints. Verify physical dimensions and lead spacing compatibility before substitution.