105R-331K

Overview

The API Delevan 105R-331K is a fixed-value RF chip inductor with a nominal inductance of 0.33 µH (330 nH) and a tolerance of ±10%. It features a maximum DC resistance (DCR) of 250 mΩ and a rated current of 620 mA. The component operates within a temperature range of -55°C to +125°C, with a self-resonant frequency of approximately 280 MHz and a Q factor of 35 at 25 MHz. It utilizes a surface-mount package measuring 2.5 x 2.5 mm.

Feature Summary

• Surface mount construction for automated assembly
• Fixed inductance value suitable for RF filtering
• Wide operating temperature range for harsh environments

Applications

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

Procurement Notes

Verify the specific manufacturer designation, as API Delevan assets may be held by different entities. Confirm lifecycle status, as some sources indicate this part may be obsolete or discontinued. Ensure the package dimensions and electrical ratings match the design requirements before ordering.

Selection Notes

Select this component when a compact 0.33 µH inductor is required for high-frequency applications. Consider the 620 mA current rating and 250 mΩ DCR for power loss calculations. Verify availability due to potential obsolescence and check for active replacements if long-term supply is critical.

Part Context

This component belongs to the API Delevan series of fixed inductors designed for radio frequency applications. These components are typically used in communication equipment and RF modules where stable inductance and small form factors are necessary for circuit performance.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult official manufacturer channels for current equivalent parts or active lifecycle alternatives.