2890-38J

Fixed Inductors Overview

The Delevan 2890-38J is a molded unshielded RF inductor with axial leads designed for PCB mounting. It features an inductance of 56 µH with a ±5% tolerance and a maximum DC resistance of 1.15 Ohms. The component supports a maximum DC current of 410 mA and achieves a minimum Q factor of 65 at 2.5 MHz. Its self-resonant frequency is 14 MHz, and it operates within a temperature range of -55°C to 105°C. Physical dimensions are 7.11 mm in diameter by 22.86 mm in length.

Fixed Inductors Feature Summary

• Molded unshielded construction for compact integration
• Axial lead termination for through-hole PCB mounting
• High-Q performance optimized for RF choke applications

Fixed Inductors Applications

• RF signal filtering
• Choke circuits in radio frequency systems
• General-purpose RF inductance requirements

Fixed Inductors Procurement Notes

Verify the specific manufacturer part number against official API Delevan documentation to confirm electrical parameters and physical specifications. Ensure compatibility with RoHS status requirements, as this series may not be compliant. Confirm package availability and lead times directly with authorized distributors or the manufacturer prior to procurement planning.

Fixed Inductors Selection Notes

Select this component when a 56 µH inductance with low DC resistance is required for RF applications. The unshielded design necessitates careful layout consideration to minimize electromagnetic interference with adjacent components. Verify that the 410 mA current rating meets the circuit's operational demands and that the axial form factor fits the board space constraints.

Fixed Inductors Part Context

This component belongs to the Delevan 2890 series of molded unshielded RF coils. The series offers various inductance values and tolerances, utilizing iron cores for stable performance. These inductors are engineered for reliability in demanding electronic environments, providing consistent inductance characteristics across the specified operating temperature range.

Fixed Inductors Replacement Considerations

Cross-reference with other 2890 series variants such as 2890-38G or 2890-38K if different tolerance or current ratings are acceptable. Ensure any substitute maintains the same axial footprint and inductance value to preserve circuit functionality without requiring mechanical redesign.