1025R-50K

Fixed Inductors Overview

The Delevan 1025R-50K is a fixed axial leaded RF inductor designed for through-hole PCB mounting. It features an iron core and molded construction with unshielded characteristics. The component provides an inductance of 18 µH with a tolerance of ±5%. It supports a maximum DC current of 149 mA and has a maximum DC resistance of 3.1 Ohms. Key electrical parameters include a Q factor of 50 at 2.5 MHz, a self-resonant frequency of 30 MHz, and a test frequency of 2.5 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 utilizing an iron core for stable RF performance
• Axial leaded termination style suitable for standard through-hole PCB mounting
• Established reliability design compliant with MIL-PRF-M15305 specifications

Fixed Inductors Applications

• RF circuit filtering and impedance matching
• Military and aerospace electronic systems
• General purpose inductor applications requiring high reliability

Fixed Inductors Procurement Notes

Verify the specific suffix 'K' against official manufacturer documentation to confirm the exact tolerance and packaging configuration. Ensure that the procurement channel sources components directly from authorized distributors or the manufacturer to guarantee authenticity. Check for RoHS compliance status as military-grade variants may differ from commercial standards. Confirm availability and lead times prior to finalizing orders, as production cycles can vary based on demand and manufacturing schedules.

Fixed Inductors Selection Notes

Select this component when a precise 18 µH inductance with tight ±5% tolerance is required for RF applications. The 149 mA current rating and 3.1 Ohm DCR define its power handling capabilities. Consider the 30 MHz self-resonant frequency limit for high-frequency operation. The axial package and molded body suit automated assembly processes. Compare against similar series parts if different tolerance levels or current ratings are needed for the specific circuit design constraints.

Fixed Inductors Part Context

The 1025R-50K belongs to the Delevan 1025/R series of fixed inductors. This series is characterized by molded, unshielded designs with iron cores, intended for robust performance in demanding environments. Components in this family typically adhere to military specifications such as MIL-PRF-M15305, ensuring consistency in quality and reliability across various industrial and defense electronics applications.

Fixed Inductors Replacement Considerations

The 1025-50K is listed as a direct substitute part number.