ZXLF-K14+

Overview

The ZXLF-K14+ is a reflectionless low-pass filter from Mini-Circuits, operating from DC to 10,000 MHz. It features a 3 dB cutoff frequency of 12.5 GHz and an insertion loss of 2.5 dB. The device utilizes a patented design to internally terminate stopband signals, ensuring a matched 50Ω impedance in the stopband to eliminate reflections. It is housed in a chassis-mount module package with a RA2937 case style. The component supports cascading and maintains high temperature stability up to 85°C.

Feature Summary

• Patented internal termination eliminates stopband signal reflections
• Maintains 50Ω impedance match across the stopband
• Supports cascaded configuration for enhanced filtering
• High thermal stability for operation up to 85°C

Applications

• RF signal conditioning systems
• Microwave communication infrastructure
• Test and measurement equipment
• S-band upconverter assemblies

Procurement Notes

Verify the specific datasheet version and mechanical dimensions against the RA2937 case style before integration. Confirm that the chassis mount requirement aligns with your system's thermal management and physical layout constraints. Ensure the 12.5 GHz cutoff specification meets the strictest requirements of your application bandwidth.

Selection Notes

Select this component when reflectionless performance is critical to prevent signal integrity degradation caused by stopband energy. The 12.5 GHz cutoff provides a distinct transition from the passband. Consider the chassis mount form factor if space allows for direct panel mounting rather than PCB surface mount alternatives.

Part Context

This part belongs to Mini-Circuits' ZXLF series of reflectionless filters. These components are designed to address common issues in RF circuits where traditional filters cause mismatched impedances in the stopband. The series covers various frequency ranges, with the K14 variant targeting high-frequency microwave applications requiring precise spectral control.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Direct replacement requires matching the reflectionless architecture, 12.5 GHz cutoff, and chassis mount specifications.

FAQ

How does the ZXLF-K14+ handle stopband signals?

It uses a patented design to internally terminate stopband signals, preventing them from reflecting back into the circuit.

What is the maximum operating temperature?

The component exhibits high temperature stability and can operate up to 85°C.