1025R-78K

Fixed Inductors Overview

The Delevan 1025R-78K is a fixed axial leaded inductor from the 1025R series, designed for through-hole mounting. It features an unshielded molded construction with an iron core. The component provides an inductance of 270 µH with a tolerance of ±10%. It supports a maximum DC current of 47 mA and has a maximum DC resistance of 25 Ohms. The self-resonant frequency is 8 MHz, measured at a Q value of 30. Operating temperature ranges from -55°C to 105°C.

Fixed Inductors Feature Summary

• Molded unshielded design utilizing an iron core for general-purpose RF applications
• Established reliability classification within the 1025R series
• Through-hole axial termination style suitable for PCB mounting

Fixed Inductors Applications

• RF circuit filtering
• General-purpose inductive components
• Military and aerospace electronic assemblies

Fixed Inductors Procurement Notes

Verify RoHS compliance status as specific listings may vary between compliant and non-compliant versions. Confirm package type availability, as bulk or reel options may differ by distributor. Cross-reference MIL-PRF-M15305 specifications if military grade performance is required. Ensure axial lead dimensions match target PCB layout constraints prior to ordering.

Fixed Inductors Selection Notes

Select this component when a 270 µH inductance with low current handling (47 mA) is required. The unshielded design necessitates careful placement to avoid magnetic coupling with nearby traces. Verify that the 25 Ohm DC resistance fits the power budget. Consider the 8 MHz self-resonant limit for high-frequency signal integrity.

Fixed Inductors Part Context

Part of the Delevan 1025R established reliability series, offering consistent performance for rugged environments. The series includes various inductance values sharing identical physical dimensions (0.095" diameter x 0.250" length). Designed for durability in demanding operational conditions.

Fixed Inductors Replacement Considerations

Direct substitute: 1025-78K. Note that the 1025-78K variant may not be RoHS compliant, whereas the 1025R-78K typically adheres to modern environmental standards. Verify core material and tolerance requirements when swapping between these variants.