XLF-641M+

Overview

The XLF-641M+ is a two-section reflectionless low-pass filter designed for RF applications. It operates from DC to 500 MHz with a 3 dB cutoff frequency of 640 MHz. The device maintains a 50 Ohm impedance and features a stopband extending from 1.1 GHz to 13 GHz. It utilizes a novel topology that absorbs and terminates stopband energy, preventing signal reflections. The component is housed in a 32-VFQFN exposed pad surface-mount package.

Feature Summary

• Reflectionless design that absorbs stopband energy to prevent signal reflections
• Two-section topology for enhanced filtering performance
• Surface-mount construction for automated assembly integration

Applications

• RF front-end filtering
• Harmonic suppression
• Signal integrity preservation in communication systems

Procurement Notes

Verify the specific datasheet revision and electrical test data provided by Mini-Circuits or authorized distributors before finalizing designs. Confirm that the 32-VFQFN package dimensions and thermal requirements align with your PCB layout constraints. Ensure compatibility with standard reflow soldering profiles for this component type.

Selection Notes

Select this component when reflectionless behavior is critical to system stability. The 640 MHz cutoff suits applications requiring sharp attenuation above the passband. Consider the VFQFN package size for space-constrained designs. Verify that the 50 Ohm system impedance matches your circuit requirements.

Part Context

This part belongs to Mini-Circuits' XLF series of reflectionless filters. These components are engineered to eliminate out-of-band reflections common in traditional filter designs. The series supports various cutoff frequencies while maintaining consistent impedance characteristics across the operating band.

Replacement Considerations

No public confirmed substitute part numbers are available.