108-273K

Overview

The Delevan 108-273K is a surface-mount RF inductor from the 108R series, designed for radio frequency applications. It features an unshielded wirewound construction with a ferrite core and standard SMD/SMT termination style. The component has an inductance of 27 uH with a tolerance of 10%. Key electrical parameters include a maximum DC resistance of 8 ohms, a minimum Q factor of 32, and a self-resonant frequency of 14 MHz. The physical dimensions are 2.54 mm in length, 2.54 mm in width, and 1.91 mm in height. It is rated for a maximum DC current of 55 mA and operates within a temperature range of -55°C to +125°C.

Feature Summary

• Unshielded wirewound design suitable for RF signal processing
• Compact chip form factor for surface-mount PCB integration
• Ferrite core construction providing stable inductance characteristics

Applications

• Radio frequency circuit filtering
• RF impedance matching networks
• General purpose RF signal conditioning

Procurement Notes

Verify component authenticity through authorized channels as this part may be discontinued or subject to limited availability. Confirm RoHS compliance status and specific manufacturing lot details prior to procurement. Ensure storage conditions meet moisture sensitivity level requirements to maintain solderability and performance integrity during assembly processes.

Selection Notes

Select this component for designs requiring a 27 uH inductance in a compact 108R package footprint. Consider the 8 ohm DC resistance and 55 mA current limit when evaluating power dissipation and thermal management needs. Verify that the 14 MHz self-resonant frequency aligns with the target operating band to ensure effective RF performance without parasitic resonance issues.

Part Context

The 108-273K belongs to the Delevan 108R series of micro i-chip inductors. This series is characterized by small surface-mount packages intended for high-frequency applications. The product line typically offers various inductance values within standardized footprints, allowing designers to scale components while maintaining consistent board layout constraints across different circuit stages.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative suppliers based on identical 27 uH value, 108R footprint compatibility, and similar RF performance metrics such as Q factor and self-resonant frequency.