103R-123H

Overview

The Delevan 103R-123H is a fixed surface-mount RF inductor with an inductance of 12 uH and a tolerance of 3%. It features an unshielded design using a ferrite core, housed in a 1010 (2.54 mm x 2.54 mm) package with a height of 1.91 mm. The component has a maximum DC resistance of 3.8 ohms and supports a maximum DC current of 160 mA. It exhibits a minimum Q factor of 25 and operates within a temperature range of -55°C to +125°C.

Feature Summary

• Unshielded construction for minimal magnetic interference
• Ferrite core material for stable RF performance
• Surface-mount termination for automated PCB assembly

Applications

• RF signal conditioning circuits
• Power filtering applications
• Energy storage in compact PCB designs

Procurement Notes

Verify the specific manufacturer source, as API Delevan assets have transitioned. Confirm RoHS compliance status directly with the supplier documentation. Ensure the 1010 package dimensions match your board layout constraints. Validate the 160 mA current rating against your circuit's peak load requirements before finalizing procurement.

Selection Notes

Select this component when an unshielded form factor is required to prevent magnetic coupling issues in dense layouts. The 12 uH value suits general-purpose RF filtering. Consider the 3.8 ohm DC resistance impact on voltage drop. The 1010 footprint offers a balance between current handling and space efficiency compared to smaller packages.

Part Context

This part belongs to the 103R series of fixed inductors from API Delevan. These components are designed for high-frequency applications where size and stability are critical. The series utilizes ferrite cores to maintain inductance values under varying conditions, serving as a standard solution for RF and power management tasks in consumer and industrial electronics.

Replacement Considerations

Direct substitutes must match the 12 uH inductance, 3% tolerance, and 1010 SMD package. Verify that alternative components support at least 160 mA current and operate within the -55°C to +125°C range. Unshielded variants are necessary if magnetic isolation is a design constraint.