103R-273HS

Overview

The Delevan 103R-273HS is an unshielded surface-mount RF inductor with a nominal inductance of 27 µH and a tolerance of ±3%. It features a maximum DC resistance of 6.9 Ohms and supports a maximum DC current of 120 mA. The component exhibits a minimum Q factor of 25 and a self-resonant frequency of 22 MHz. Designed for PCB mounting, it utilizes standard terminations and is supplied in reel packaging.

Feature Summary

• Unshielded wirewound construction suitable for RF applications
• Standard SMD/SMT termination style for PCB integration
• High self-resonant frequency characteristics relative to inductance value

Applications

• RF circuit design
• PCB mounted signal processing
• Inductor and choke coil assemblies

Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm exact electrical tolerances and terminal configurations. Cross-reference part numbers such as 103R-273HS T100 or similar aliases found in distributor catalogs to ensure accurate identification before procurement. Confirm RoHS compliance status through the latest datasheet.

Selection Notes

Select this component when an unshielded RF inductor with 27 µH nominal value is required. Ensure the 120 mA current rating meets circuit demands. Consider the 6.9 Ohm DC resistance impact on power loss. Verify that the 22 MHz self-resonant frequency aligns with the operating bandwidth requirements of the target application.

Part Context

This component belongs to the Delevan 103/R series of RF inductors. It shares physical dimensions and mounting styles with other variants in the family, such as the 103R-561H and 103R-471HS. The series is characterized by unshielded designs intended for general RF signal handling on printed circuit boards.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult manufacturer cross-reference guides for verified alternatives.