108-183HS

Overview

The Delevan 108-183HS is an unshielded surface-mount RF inductor with an 18 µH nominal inductance and a ±5% tolerance. It features a maximum DC resistance of 4.4 Ohms and a rated current of 75 mA. The component measures 2.54 mm by 2.54 mm with a height of 1.91 mm, offering a self-resonant frequency of 21 MHz and a Q factor of 32 at 2.5 MHz.

Feature Summary

• Unshielded wirewound construction for specific RF impedance matching
• Standard two-lead surface mount termination style
• Ferrite core material providing stable inductance characteristics

Applications

• RF circuit filtering
• Impedance matching networks
• General radio frequency signal processing

Procurement Notes

Verify component authenticity through authorized channels due to discontinuation status. Confirm RoHS compliance requirements against project specifications as the part may not meet current environmental standards. Validate physical dimensions and electrical parameters against original design schematics before integration into new production runs.

Selection Notes

Select this component for applications requiring precise 18 µH inductance in compact RF layouts. Consider the low current rating and high DC resistance when designing power-sensitive circuits. Evaluate thermal management needs given the small package size and unshielded nature of the device.

Part Context

This part belongs to the 108 series of fixed inductors manufactured by API Delevan. It represents a legacy surface-mount technology option designed for space-constrained electronic assemblies requiring specific RF performance characteristics without magnetic shielding interference.

Replacement Considerations

Public confirmed substitute: NLV25T-180J-EF (TDK). Verify pin compatibility and electrical equivalence before substitution.