103R-331H

Overview

The Delevan 103R-331H is a fixed surface-mount RF inductor with a nominal inductance of 0.33 µH (330 nH). It features a maximum DC resistance of 0.235 Ω and a rated current capacity of 645 mA. The component utilizes an unshielded chip construction with a ferrite core, housed in a nonstandard two-terminal package suitable for PCB mounting. It operates within a temperature range of -55 °C to +125 °C.

Feature Summary

• Unshielded chip design for general-purpose RF applications
• Ferrite core construction for stable inductance characteristics
• Surface-mount technology compatible for automated assembly

Applications

• RF circuit filtering
• Impedance matching networks
• General-purpose signal processing

Procurement Notes

Verify RoHS compliance status as sources indicate conflicting information regarding lead content. Confirm the specific tolerance rating, as documentation references both 2% and 3% variants. Ensure the ordering suffix matches the required electrical specifications before procurement.

Selection Notes

Select this component for low-power RF circuits requiring a 330 nH inductance value. Consider the 645 mA current limit and 0.235 Ω DCR when designing power-sensitive paths. The unshielded nature requires layout consideration to minimize electromagnetic interference with adjacent components.

Part Context

This part belongs to the Delevan 103R series of fixed RF inductors. It shares the same physical footprint and core material as other variants in the family, differing primarily in inductance value and tolerance. It serves as a standard passive component for high-frequency signal conditioning.

Replacement Considerations

Direct substitutes include the 103R-331G and S1210R-331G, provided the tolerance and shielding requirements align with the design specifications. Verify that replacement parts maintain the same current rating and DC resistance limits.