2890-39G

Fixed Inductors Overview

The Delevan 2890-39G is a fixed axial leaded RF inductor from the 2890/R series. It features an unshielded molded construction with an iron core, designed for PCB mount applications. Key electrical parameters include a nominal inductance of 68 µH with a ±2% tolerance and a maximum DC resistance of 1.85 Ohms. The component supports a maximum DC current of 325 mA and achieves a minimum Q factor of 75 at 1 MHz. Its self-resonant frequency is specified at 13 MHz. The physical dimensions are 7.11 mm in diameter by 22.86 mm in length, operating within a temperature range of -55°C to 105°C.

Fixed Inductors Feature Summary

• Unshielded molded design utilizing an iron core for stable RF performance
• Axial leaded termination style suitable for through-hole PCB mounting
• High Q factor characteristics optimized for radio frequency choke applications

Fixed Inductors Applications

• RF signal filtering circuits
• Radio frequency choke implementations
• General purpose RF inductive components

Fixed Inductors Procurement Notes

Verify RoHS compliance status prior to procurement, as documentation indicates potential non-compliance depending on specific manufacturing batches or regional regulations. Confirm that the supplier provides official datasheets matching the 2890-39G designation to ensure accurate electrical specifications. Check for availability constraints related to the reel packaging format and verify that the vendor can support the required quantity increments without compromising component integrity during shipping.

Fixed Inductors Selection Notes

Select this component when a precise 68 µH inductance with tight ±2% tolerance is required for RF circuits. Ensure the application current does not exceed 325 mA to prevent saturation or thermal issues. Consider the unshielded nature of the part for layout planning to minimize unintended coupling with nearby traces. Verify that the axial package dimensions fit the target PCB footprint and that the operating temperature range meets environmental requirements.

Fixed Inductors Part Context

This part belongs to the API Delevan 2890/R series of fixed inductors, manufactured by API Delevan, a specialist in coil winding technologies. The series offers various inductance values tailored for RF applications, sharing common physical dimensions and mounting styles. The 2890-39G represents a specific value variant within this lineup, distinguished by its 68 µH rating and associated electrical characteristics defined by the manufacturer's standard product line.

Fixed Inductors Replacement Considerations

Cross-reference with other 2890 series variants such as 2890R-39F if different tolerance or DCR specifications are acceptable. Verify that substitute parts maintain the same axial leaded form factor and 68 µH inductance value. Ensure any replacement matches the 325 mA current rating and 1.85 Ohm maximum DCR to preserve circuit performance.