108-183J

Overview

The Delevan 108-183J is an unshielded surface-mount fixed inductor with an inductance of 18 µH and a tolerance of ±5%. It features a maximum DC resistance of 4.4 Ohms and a rated current of 75 mA. The component has a non-standard, two-lead package measuring 2.54 mm x 2.54 mm x 1.91 mm. It exhibits a Q factor of 32 at 2.5 MHz and a self-resonant frequency of 21 MHz. Operating temperatures range from -55°C to 125°C.

Feature Summary

• Unshielded construction for minimal magnetic interference
• Surface-mount design with standard two-lead termination
• Ferrite core material for stable inductance

Applications

• RF signal processing circuits
• General-purpose SMD filtering applications
• High-frequency choke implementations

Procurement Notes

Verify component status carefully as this part may be obsolete or end-of-life. Confirm availability through authorized distributors only. Check RoHS compliance documentation prior to integration. Ensure the specific manufacturing date code meets project requirements. Validate that the non-standard package fits the target PCB footprint without modification.

Selection Notes

Select this component when an unshielded 18 µH inductor with low current handling is required. The 4.4 Ohm DC resistance limits suitability for high-power paths. Consider the 2.54 mm square footprint for layout constraints. Compare against shielded alternatives if electromagnetic interference is a concern in the application environment.

Part Context

This component belongs to the Delevan 108 series of unshielded surface-mount inductors. These parts are designed for general RF and signal applications where magnetic shielding is not mandatory. The series offers various inductance values within a compact, standardized footprint suitable for automated assembly processes.

Replacement Considerations

Public confirmed substitute: NLV25T-180J-EF by TDK.