103R-181HS

Overview

The Delevan 103R-181HS is a surface-mount RF inductor designed for high-frequency circuit applications. It features an unshielded construction with a nominal inductance of 680 nH and a tight tolerance of ±3%. The component exhibits a maximum DC resistance of 520 mΩ and supports a maximum DC current of 435 mA. Key electrical specifications include a minimum Q factor of 22 and a self-resonant frequency of 175 MHz. Physically, it measures 2.54 mm in length and width, with a height of 1.91 mm, suitable for standard PCB mounting.

Feature Summary

• Unshielded chip SMT design optimized for RF signal paths
• High precision inductance tolerance for stable circuit performance
• Standard terminal configuration for reliable PCB integration

Applications

• RF filtering circuits
• Impedance matching networks
• General radio frequency signal processing

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging and quantity configurations. Confirm RoHS compliance status through the latest product data sheet before finalizing procurement orders. Cross-reference the Mouser part number 807-103R-181HS with the original Delevan datasheet to validate all technical parameters and availability constraints.

Selection Notes

Select this component when an unshielded RF inductor with 680 nH nominal value is required. Ensure the operating frequency remains below the 175 MHz self-resonant point to maintain inductive behavior. Verify that the circuit current does not exceed 435 mA to prevent saturation or thermal issues. Consider the physical footprint dimensions for adequate PCB spacing.

Part Context

This part belongs to the Delevan 103/R series of fixed RF inductors. It is categorized under SMD RF Inductors within the broader Inductors, Chokes & Coils family. The series is characterized by its unshielded architecture and standardized package dimensions, targeting applications where magnetic interference coupling is manageable.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.