105R-272H

Overview

The Delevan 105R-272H is a fixed surface-mount RF inductor with a nominal inductance of 2.7 µH and a tolerance of 3%. It features a maximum DC resistance of 2 ohms and a rated current of 220 mA. The component utilizes an iron core material and is encapsulated in epoxy for protection. Designed for general-purpose applications, it operates within a temperature range of -55 °C to 125 °C and contains two leads.

Feature Summary

• Utilizes an iron core material for stable inductive performance in RF circuits.
• Encapsulated in epoxy to provide environmental protection and mechanical stability.
• Designed as a general-purpose surface-mount component for high-frequency applications.

Applications

• RF signal processing circuits
• General-purpose inductive filtering
• High-frequency impedance matching networks

Procurement Notes

Verify the specific ordering suffix to ensure the correct tolerance and packaging configuration matches the design requirements. Confirm that the leaded composition complies with project-specific regulatory standards, as standard versions may contain lead. Cross-reference the manufacturer's latest documentation to validate the electrical parameters against the intended application constraints before finalizing procurement.

Selection Notes

Select this component when a 2.7 µH inductance value is required with a tight 3% tolerance for precision RF applications. Ensure the circuit design accommodates the 220 mA current rating and the 2 ohm DC resistance to prevent excessive power loss or thermal issues. Consider the nonstandard package dimensions during PCB layout to guarantee proper footprint compatibility and assembly alignment.

Part Context

This part belongs to the API Delevan 105 series of fixed inductors, which are characterized by their robust construction and suitability for radio frequency environments. The series typically employs iron cores to manage magnetic properties effectively. These components are engineered for reliability in demanding electronic systems where consistent inductive behavior is critical for signal integrity.

Replacement Considerations

The 105-272F is a related variant within the same product family, offering similar inductance but potentially differing in tolerance or manufacturing specifications. Verify exact electrical equivalence and physical footprint compatibility before substitution. Other models such as the 1210R-272H share the inductance value but differ significantly in current handling and resistance characteristics.