103R-472HS

Overview

The Delevan 103R-472HS is an unshielded surface-mount RF inductor with a nominal inductance of 4.7 µH and a tolerance of ±3%. It features a maximum DC resistance of 1.8 Ohms and a rated DC current of 230 mA. The component has a self-resonant frequency of 42 MHz and a minimum Q factor of 60. Its physical dimensions are 4.14 mm in length, 3.38 mm in width, and 3.56 mm in height.

Feature Summary

• Unshielded chip SMT construction for RF applications
• Ferrite core design supporting high-frequency operation
• Standard termination style for PCB mounting

Applications

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

Procurement Notes

Verify the specific manufacturer designation, as API Delevan assets were acquired by Coilcraft. Confirm RoHS compliance status through official documentation. Check for availability from authorized distributors or secondary markets due to potential discontinuation. Ensure the part number suffix matches the required tolerance and current rating specifications for your design.

Selection Notes

Select this component for applications requiring a 4.7 µH inductance with moderate current handling capabilities. The unshielded design may require careful layout consideration to minimize electromagnetic interference coupling. Verify that the 230 mA current rating meets the peak and RMS requirements of the target circuit. Compare performance against shielded alternatives if magnetic field containment is critical.

Part Context

This part belongs to the 103R series of fixed inductors manufactured by Delevan. The series typically offers various inductance values in a compact surface-mount package. Delevan was a prominent manufacturer of passive components before its acquisition by Coilcraft, which continues to support legacy product lines.

Replacement Considerations

Coilcraft 103R-472HS is a confirmed substitute part number representing the same component under the acquiring manufacturer's nomenclature.