105R-471K

Overview

The Delevan 105R-471K is a surface-mount RF inductor with an inductance of 470 nH and a tolerance of ±10%. It features a maximum DC resistance of 310 mΩ and a rated current of 610 mA. The component operates within a temperature range of -55°C to +125°C, exhibiting a Q value of 35 at 25 MHz and a self-resonant frequency of 215 MHz. Its physical dimensions are 2.54 mm in length, 2.54 mm in width, and 1.91 mm in height.

Feature Summary

• Unshielded chip design for specific RF circuit integration
• Ferrite core construction for stable inductance performance
• Surface mount technology compatible with automated PCB assembly

Applications

• RF signal filtering circuits
• Impedance matching networks
• General-purpose RF choke applications

Procurement Notes

Verify the manufacturer designation carefully, as API Delevan assets may be managed by different entities depending on acquisition timelines. Confirm that the specific lot date code aligns with your production schedule requirements. Ensure that the unshielded package type meets the electromagnetic interference constraints of your final assembly environment before placing orders.

Selection Notes

Select this component when an unshielded form factor is required to minimize profile or cost in RF designs. The 470 nH value suits high-frequency applications where self-resonance characteristics near 215 MHz are critical. Consider the 310 mΩ DC resistance impact on power efficiency if used in high-current paths compared to shielded alternatives.

Part Context

This part belongs to the 105R series of micro chip inductors manufactured by Delevan. It utilizes a ferrite core material and is designed for surface mount applications. The series provides fixed inductance values optimized for radio frequency environments, distinguishing it from power chokes or general-purpose coils through its specific Q-factor and self-resonant frequency parameters.

Replacement Considerations

The S1008R-471K offers similar electrical specifications but includes shielding. The MILS1812R-471K provides a larger footprint with iron core construction. Verify mechanical fit and magnetic isolation requirements when substituting these parts.