105R-121M

Overview

The Delevan 105R-121M is a fixed surface-mount RF inductor with an inductance of 120 nH and a tolerance of 20%. It features an unshielded wirewound construction on an iron core, designed for high-frequency applications. The component has a maximum DC current rating of 0.83 A and a DC resistance of 0.14 Ohms. Key electrical parameters include a self-resonant frequency of 25 MHz and a minimum Q-factor of 40. It is supplied in tape and reel packaging.

Feature Summary

• Unshielded wirewound design suitable for general RF filtering
• Iron core construction optimized for high-frequency stability
• Surface-mount termination style for automated PCB assembly

Applications

• RF signal filtering circuits
• High-frequency electronic circuit impedance matching
• General-purpose RF choke applications

Procurement Notes

Verify availability status as this component may be classified as obsolete or end-of-life by the manufacturer. Confirm specific datasheet revisions and RoHS compliance details directly with authorized distributors before integration into new designs. Ensure sourcing channels provide authentic API Delevan products to avoid counterfeit components.

Selection Notes

Select this component for low-inductance RF applications requiring a 120 nH value with standard 20% tolerance. Consider the unshielded nature when designing layouts to minimize electromagnetic interference coupling. Verify that the 0.83 A current rating meets the operational requirements of the target circuit without saturation.

Part Context

This part belongs to the API Delevan line of fixed inductors, specifically categorized under RF SMD types. It utilizes a nonstandard package case configuration typical of specialized RF components from this manufacturer series. The product falls within the broader category of inductors, chokes, and coils used in passive electronic filtering.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to potential obsolescence status, alternative sourcing should focus on verifying current stock availability through authorized API Delevan distributors rather than identifying direct cross-references.