S1812-183H

Fixed Inductors Overview

The Delevan S1812-183H is a shielded surface-mount RF inductor with an 18 µH nominal inductance and ±3% tolerance. It features a ferrite core and operates within a temperature range of -55 °C to +125 °C. The component has a maximum DC resistance of 2.4 Ω, a minimum Q factor of 50, and a self-resonant frequency of 15 MHz. It supports a maximum DC current of 288 mA and utilizes standard SMD/SMT terminations in a 1812 (4532 metric) package.

Fixed Inductors Feature Summary

• Shielded construction minimizes electromagnetic interference for stable RF performance
• Ferrite core design ensures consistent inductance characteristics across operating temperatures
• Surface-mount format facilitates automated PCB assembly processes

Fixed Inductors Applications

• RF signal filtering circuits
• Impedance matching networks
• Radio frequency choke applications

Fixed Inductors Procurement Notes

Verify RoHS compliance status as documentation indicates non-compliance. Confirm lead times and availability directly with the manufacturer or authorized distributors, as stock levels fluctuate. Ensure the specific suffix matches project requirements regarding tolerance and packaging format before finalizing orders.

Fixed Inductors Selection Notes

Select this component for applications requiring precise 18 µH shielding in compact layouts. Evaluate the 288 mA current limit against circuit demands. Consider the 15 MHz self-resonant frequency to ensure operation remains below resonance. Compare DCR and Q specifications against alternative RF inductors for optimal signal integrity.

Fixed Inductors Part Context

This part belongs to the S1812/R series of shielded RF inductors from Delevan. The series offers various inductance values in the standardized 1812 footprint. These components are designed for high-frequency applications where size constraints and magnetic shielding are critical for maintaining circuit performance.

Fixed Inductors Replacement Considerations

Cross-reference with other S1812-series parts from API Delevan for different tolerance or current ratings. Verify pin compatibility and electrical parameters when substituting with generic 1812 RF inductors from other manufacturers.