103R-681KS

Overview

The Delevan 103R-681KS is a fixed surface-mount RF inductor with a nominal inductance of 680 nH and a tolerance of ±10%. It features a maximum DC resistance of 520 mΩ and a rated current of 435 mA. The component exhibits a minimum Q factor of 22 and a self-resonant frequency of 175 MHz. It utilizes a nonstandard rectangular package measuring 2.54 mm by 2.54 mm with a height of 1.91 mm. Operating temperatures range from -55 °C to +125 °C, and it complies with RoHS standards.

Feature Summary

• Designed for radio frequency applications including filtering and impedance matching
• Unshielded construction suitable for general-purpose high-frequency signal processing
• Robust thermal performance supporting operation up to 125 °C

Applications

• RF circuit filtering
• Impedance matching networks
• High-frequency signal processing

Procurement Notes

Verify the specific manufacturer designation, as API Delevan assets are managed by different entities. Confirm that the part number corresponds to the unshielded variant with the specified 520 mΩ resistance and 435 mA rating. Ensure compatibility with standard SMT reflow processes and validate that the nonstandard lead configuration meets board layout requirements before finalizing procurement.

Selection Notes

Select this component when a compact 680 nH inductance is required for RF environments. The 435 mA current rating and low DC resistance make it suitable for power-sensitive signal paths. Consider the unshielded nature regarding potential electromagnetic interference coupling. Verify that the 175 MHz self-resonant frequency aligns with the target operating band to ensure effective inductive behavior.

Part Context

This component belongs to the Delevan 103R series of fixed surface-mount inductors. These parts are engineered for high-frequency stability and reliability in demanding electronic assemblies. The series offers various inductance values tailored for RF and microwave applications, providing consistent electrical characteristics across temperature variations.

Replacement Considerations

Cross-reference with other 680 nH SMD inductors ensuring identical or superior current ratings and DCR specifications. Verify package dimensions match the 2.54 x 2.54 mm footprint. Confirm self-resonant frequency compatibility to maintain circuit performance integrity.