108-273J

Overview

The Delevan 108-273J is a fixed surface-mount radio frequency inductor with an inductance of 27 µH and a tolerance of ±5%. It utilizes a ferrite core and features an unshielded design. The component has a maximum DC resistance of 8 Ohms and a rated current of 55 mA. Key electrical specifications include a minimum Q factor of 32 and a self-resonant frequency of 14 MHz, tested at 1 kHz. The package dimensions are 2.54 mm in length, 2.54 mm in width, and 1.91 mm in height.

Feature Summary

• Unshielded RF inductor construction for minimal magnetic interference
• Ferrite core material optimized for high-frequency performance
• Surface mount package suitable for automated PCB assembly

Applications

• RF circuit filtering
• Impedance matching networks
• High-frequency signal processing

Procurement Notes

Verify component availability status as the 108-273J is listed as obsolete by major distributors. Confirm end-of-life status with the manufacturer before finalizing designs. Ensure all technical parameters match original requirements when sourcing alternatives. Check RoHS compliance documentation if required for specific regulatory standards. Validate supplier authenticity to prevent counterfeit components.

Selection Notes

Select this component for applications requiring precise 27 µH inductance in RF environments. Consider the unshielded nature for sensitive layout planning. Evaluate the 55 mA current rating against peak load requirements. Compare self-resonant frequency limits with operating bandwidth. Assess thermal performance within the specified temperature range.

Part Context

This part belongs to the Delevan 108R series of fixed inductors designed for general-purpose and RF applications. The series offers various inductance values with consistent physical footprints. Ferrite core technology provides stability across operating frequencies. Surface mount packaging facilitates compact electronic device integration.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data. Consult manufacturer obsolescence notices for recommended replacements. Verify equivalent electrical characteristics including inductance, Q factor, and current rating.