LQH43MN180K03L

Fixed Inductors Overview

The Murata LQH43MN180K03L is an unshielded wirewound RF inductor in a 1812 (4532 metric) surface-mount package. It features an inductance of 18 µH with a tolerance of ±10%. The component has a maximum DC current rating of 340 mA and a maximum DC resistance of 820 mΩ. It operates within a temperature range of -40°C to +85°C, exhibits a minimum Q factor of 35 at 1 MHz, and has a self-resonant frequency of 17 MHz.

Fixed Inductors Feature Summary

• Unshielded wirewound construction using ferrite core material
• Designed for high-frequency RF applications
• Standard terminal configuration for PCB mounting

Fixed Inductors Applications

• Power circuit filtering
• RF signal processing
• General-purpose SMD inductive components

Fixed Inductors Procurement Notes

Verify the specific suffix 'K' denotes the ±10% tolerance variant when sourcing. Confirm the manufacturer part number matches exactly to ensure correct inductance and current ratings. Check RoHS compliance status as indicated in official documentation. Ensure the ordering quantity aligns with available packaging formats such as cut tape or reel.

Fixed Inductors Selection Notes

Select this component for designs requiring 18 µH inductance in a compact 1812 footprint. Consider the 340 mA current limit and 820 mΩ DCR for power loss calculations. Verify that the +85°C maximum operating temperature meets the thermal requirements of the target application environment.

Fixed Inductors Part Context

This part belongs to the Murata LQH series of RF inductors. These components are characterized by their wirewound technology and unshielded design, suitable for general radio frequency applications. The series offers various inductance values within standardized case sizes to facilitate flexible circuit board layout.

Fixed Inductors Replacement Considerations

The LQH43MN180J03L serves as a direct substitute with identical electrical characteristics except for a tighter ±5% tolerance. Other LQH43MN variants with different inductance values may be considered if circuit parameters allow.