103R-272HS

Overview

The Delevan 103R-272HS is a surface-mount RF inductor designed for high-frequency circuit applications. It features an unshielded construction within a nonstandard package footprint, offering precise electrical characteristics for signal processing tasks. The component provides an inductance of 2.7 µH with a tight tolerance of 3%, ensuring stable performance across varying conditions. It supports a maximum DC current of 290 mA and exhibits a maximum DC resistance of 1.15 Ohms. Key frequency parameters include a minimum Q factor of 22 and a self-resonant frequency of 67 MHz. These specifications define its operational limits and suitability for specific RF filtering and impedance matching requirements.

Feature Summary

• Unshielded chip design suitable for standard SMT assembly processes
• High precision inductance value with 3% tolerance for accurate circuit tuning
• Optimized self-resonant frequency characteristics for RF signal integrity

Applications

• RF filter circuits requiring precise inductance values
• Impedance matching networks in communication devices
• Signal conditioning stages in radio frequency equipment

Procurement Notes

Verify the exact physical dimensions against the official datasheet before PCB layout finalization, as this component utilizes a nonstandard package size rather than common industry footprints. Confirm that the 290 mA current rating aligns with the peak operating currents of the target application to prevent saturation or thermal issues. Ensure that the unshielded nature of the inductor does not cause electromagnetic interference with nearby sensitive components on the board.

Selection Notes

Select this component when a specific 2.7 µH inductance is required with strict 3% tolerance constraints in an RF environment. Consider the unshielded topology if magnetic field containment is not critical and cost-effective SMT integration is prioritized. Evaluate the 67 MHz self-resonant frequency to ensure it falls outside the primary operating band of the circuit to maintain inductive behavior. Compare the 1.15 Ohm DC resistance against power loss budgets to verify efficiency requirements are met.

Part Context

The 103R-272HS belongs to Delevan's range of fixed surface-mount inductors tailored for radio frequency applications. This series emphasizes compact form factors and reliable performance in consumer electronics and communication hardware. As part of the broader portfolio, it shares manufacturing standards focused on consistency and durability. The component represents a specialized solution for designers needing precise passive components without the bulk of shielded alternatives.

FAQ

Is the 103R-272HS shielded?

No, the 103R-272HS is an unshielded inductor.

What is the maximum DC current rating?

The maximum DC current rating is 290 mA.