103R-183G

Overview

The Delevan 103R-183G is a fixed surface-mount RF inductor with an inductance of 18 µH and a tolerance of ±2%. It features a maximum DC resistance of 5.8 Ohms and a rated current of 130 mA. The component operates within a temperature range of -55°C to +125°C, utilizing a ferrite core. Electrical characteristics include a Q factor of 25 at 2.5 MHz and a self-resonant frequency of 28 MHz. The physical dimensions are 2.54 mm x 2.54 mm x 1.91 mm.

Feature Summary

• Unshielded SMD construction for minimal magnetic interference
• Ferrite core design optimized for RF applications
• High thermal stability across extended operating temperatures

Applications

• RF circuit filtering
• Impedance matching networks
• Oscillator tank circuits

Procurement Notes

Verify the specific suffix against official manufacturer documentation to confirm exact tolerance and packaging specifications. Confirm RoHS compliance status as historical data indicates potential non-compliance for certain variants. Ensure the ordering code matches the required lead time and availability constraints directly from the supplier.

Selection Notes

Select this component for applications requiring precise 18 µH inductance with tight ±2% tolerance. Consider the 130 mA current rating and 5.8 Ohm DCR limits for power handling requirements. Evaluate the unshielded nature of the device regarding nearby sensitive components to prevent coupling issues in dense PCB layouts.

Part Context

This part belongs to the Delevan 103 series of fixed RF inductors. These components are designed for surface-mount technology (SMT) assembly on printed circuit boards. The series provides standardized values for radio frequency signal processing and filtering tasks in electronic equipment.

Replacement Considerations

Public confirmed substitute part numbers: 103-183GS, 103R-183KS.