XLF-122H+

Overview

The XLF-122H+ is a three-section reflectionless low-pass filter manufactured by Mini-Circuits. It employs a novel topology that absorbs and terminates stop-band energy, eliminating signal reflections common in traditional filters. The component operates from DC to 1200 MHz with a 50Ω impedance. It features a 3dB cutoff frequency of 1400 MHz and is housed in a compact 24-VFQFN exposed pad surface-mount package.

Feature Summary

• Reflectionless design that absorbs stop-band energy to prevent signal reflections
• Three-section topology for enhanced filtering performance
• Surface-mount construction suitable for automated assembly

Applications

• RF front-end modules requiring minimal reflection
• Communication systems utilizing frequencies up to 1200 MHz
• Test and measurement equipment needing clean signal termination

Procurement Notes

Verify the specific suffix against official Mini-Circuits documentation to ensure correct electrical specifications and package type. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer before placing orders. Ensure compatibility with your PCB footprint requirements.

Selection Notes

Select this component when reflectionless operation is critical to system stability. The 1400 MHz cutoff provides a margin above the 1200 MHz operational range. Consider the 24-VFQFN package size for space-constrained designs requiring high-density mounting.

Part Context

This part belongs to Mini-Circuits' XLF series of reflectionless filters. These components are designed to replace standard LC filters in applications where reflected energy can cause instability or interference. The series covers various frequency ranges while maintaining consistent 50Ω impedance characteristics.

Replacement Considerations

No direct public substitute part numbers are confirmed for this specific model. Standard low-pass filters may be used but will not provide the reflectionless absorption feature. Verify pinout and thermal pad requirements if considering alternative packages.