1025R-78H

Fixed Inductors Overview

The Delevan 1025R-78H is a leaded RF inductor from the 1025R series, designed for through-hole PCB mounting. It features an unshielded molded construction with axial termination and an iron core. Key electrical parameters include an inductance of 270 uH, a tolerance of 3%, and a maximum DC resistance of 25 ohms. The component supports a maximum DC current of 47 mA and achieves a minimum Q factor of 30. Its self-resonant frequency is 8 MHz, with a standard operating temperature range spanning -55 C to +105 C.

Fixed Inductors Feature Summary

• Molded unshielded coil construction utilizing an iron core for stable RF performance
• Axial leaded termination style suitable for standard through-hole PCB mounting processes
• Established reliability design intended for consistent operation across wide industrial temperature ranges

Fixed Inductors Applications

• RF circuit filtering and impedance matching networks
• Signal processing stages requiring high-Q inductive components
• Industrial electronic systems operating within extended temperature environments

Fixed Inductors Procurement Notes

Verify RoHS compliance status as documentation indicates non-compliance. Confirm manufacturing origin and specific batch testing records for quality assurance. Ensure supply chain sources provide valid traceability documentation. Check for alternative packaging options if reel quantities are required. Validate technical specifications against final application requirements before procurement.

Fixed Inductors Selection Notes

Select this component when a 270 uH inductance value is required with tight 3% tolerance constraints. Consider the 47 mA current rating and 25 ohm DC resistance limits for power handling capabilities. Evaluate the 8 MHz self-resonant frequency to ensure suitability for target signal frequencies. Verify that the unshielded design does not interfere with nearby sensitive circuitry.

Fixed Inductors Part Context

This part belongs to the Delevan 1025R series of fixed RF inductors. The series offers various inductance values with different tolerance grades. Components share common physical dimensions and mounting styles while varying in electrical characteristics. This specific model provides higher inductance compared to lower-value variants in the same family.

Fixed Inductors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-reference with other Delevan 1025R series models only if electrical parameters match exactly. Verify mechanical fit and pin compatibility before considering any alternative sourcing options.