103R-223K

Overview

The Delevan 103R-223K is a fixed surface-mount RF inductor with a nominal inductance of 22 µH and a tolerance of ±10%. It features an unshielded construction using a phenolic core material. The component supports a maximum DC current of 125 mA and has a maximum DC resistance of 6.4 Ohms. Key electrical parameters include a minimum Q factor of 25 and a self-resonant frequency of 25 MHz. It operates within a temperature range of -55°C to +125°C.

Feature Summary

• Unshielded SMD design for general-purpose RF applications
• Phenolic core material construction
• Standard two-terminal surface mount termination

Applications

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

Procurement Notes

Verify the specific manufacturer source, as API Delevan assets are held by various entities. Confirm RoHS compliance status directly with the supplier documentation. Ensure the unshielded variant matches the schematic requirements, as shielded alternatives exist within the same product family. Validate package dimensions against PCB footprint constraints before finalizing procurement.

Selection Notes

Select this component when an unshielded inductor is required for cost-sensitive or non-interference-critical RF designs. The 22 µH value suits lower frequency choke applications compared to higher-frequency variants. Consider the 125 mA current rating for power budget calculations. Compare against shielded series if EMI mitigation is necessary for the target application environment.

Part Context

This part belongs to the 103R series of micro chip inductors manufactured by API Delevan. These components are designed for surface mount technology (SMT) assembly on printed circuit boards. The series offers fixed inductance values optimized for radio frequency circuits, distinguishing them from power chokes or high-current shielding types found in other Delevan lines.

Replacement Considerations

The 103-223K is a direct equivalent part number for the 103R-223K. Both denote the same 22 µH unshielded inductor specifications. Verify terminal compatibility and physical dimensions when substituting between these identifiers.