108-223K

Overview

The Delevan 108-223K is a surface-mount fixed inductor designed for RF applications. It features an unshielded construction with a ferrite core, housed in a compact 1008 (2520 metric) package. The component provides a nominal inductance of 22 uH with a tight tolerance of 1%. It supports a maximum DC current of 57 mA and exhibits a maximum DC resistance of 7.5 Ohms. Key performance metrics include a minimum Q factor of 30 and a self-resonant frequency of 17 MHz. Operating temperatures range from -55 °C to +125 °C.

Feature Summary

• Unshielded SMD design suitable for space-constrained RF circuits
• Ferrite core construction for stable inductance characteristics
• High self-resonant frequency for effective RF choke operation

Applications

• RF signal filtering
• Impedance matching networks
• General-purpose RF chokes

Procurement Notes

Verify the specific manufacturer designation, as API Delevan assets have transitioned. Confirm RoHS compliance status directly with the supplier or authorized distributor, as historical records may vary. Ensure the unshielded variant matches the schematic requirements, as shielded alternatives exist within the same series. Validate the 1008 footprint dimensions against the PCB layout to ensure proper placement and soldering integrity.

Selection Notes

Select this component when an unshielded form factor is required to minimize parasitic coupling in dense layouts. The 1008 size offers a balance between current handling and board area efficiency compared to smaller packages. Consider the 7.5 Ohm DC resistance impact on circuit bias points. The 17 MHz self-resonant frequency defines the upper operational limit for effective choking behavior in the target application.

Part Context

This part belongs to the Delevan fixed inductor family, specifically tailored for radio frequency environments. Unlike power inductors in the DC630 series which handle higher currents, this model prioritizes high-frequency stability and low current ratings. It complements shielded variants like the S1812 series by providing an open-core option for specific electromagnetic interference management strategies.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.