1025R-50G

Fixed Inductors Overview

The Delevan 1025R-50G is a fixed axial leaded inductor from the 1025R series, designed for RF applications. It features an 18 µH nominal inductance with a tight ±2% tolerance and a maximum DC resistance of 3.1 Ohms. The component supports a rated current of 149 mA and achieves a minimum Q factor of 50 at its test frequency. Its self-resonant frequency is specified at 30 MHz, indicating suitability for high-frequency signal processing. The unit utilizes an iron core within a molded, unshielded package measuring 2.41 mm in diameter and 6.35 mm in length.

Fixed Inductors Feature Summary

• Molded construction with an iron core for stable RF performance
• Axial through-hole mounting configuration for PCB integration
• Unshielded design optimized for specific electromagnetic environments
• High precision tolerance ensuring accurate circuit behavior

Fixed Inductors Applications

• RF filter circuits requiring precise impedance matching
• High-frequency signal processing stages
• Resonant tank circuits in communication equipment
• Impedance transformation networks in RF transceivers

Fixed Inductors Procurement Notes

Verify RoHS compliance status prior to procurement, as historical data indicates potential non-compliance for certain variants within this series. Confirm that the specific batch meets project environmental requirements. Ensure the supplier provides valid documentation regarding material composition and export classification codes. Cross-reference the manufacturer part number with distributor catalogs to confirm current availability and lead times. Validate that the axial lead dimensions match the target PCB footprint specifications.

Fixed Inductors Selection Notes

Select this component when an 18 µH inductance with strict ±2% tolerance is required for RF applications. The low DC resistance of 3.1 Ohms minimizes power loss in series configurations. Consider the 30 MHz self-resonant frequency limit to ensure operation remains below the resonant point. The axial form factor suits manual assembly or wave soldering processes where surface mount alternatives are unsuitable. Evaluate thermal constraints given the 149 mA current rating.

Fixed Inductors Part Context

This component belongs to the Delevan 1025R series of fixed inductors, which are characterized by their molded construction and axial leads. The series is engineered for reliability in radio frequency environments. The 1025R-50G specifically targets applications demanding high precision and stability. It represents a legacy solution for through-hole RF designs, offering consistent performance across varying temperature conditions typical of industrial and commercial electronics.

Fixed Inductors Replacement Considerations

Direct substitutes must match the 18 µH value, ±2% tolerance, and axial package. Verify that alternative components maintain similar Q factors and self-resonant frequencies above 30 MHz. Check if replacement parts offer compatible current ratings and DC resistance levels. Ensure physical dimensions allow for identical PCB mounting without mechanical interference.