ZXLF-K221+

Overview

The ZXLF-K221+ is a reflectionless low-pass RF filter manufactured by Mini-Circuits, designed for operation from DC to 220 MHz. It features a cutoff frequency of 370 MHz and a stopband range extending from 570 MHz to 12 GHz. The component operates at a nominal impedance of 50 Ohms with an average input power rating of 2.0 Watts. It utilizes a 2.92 mm termination style and is housed in the UK3042 case style. Insertion loss ranges between 1.4 dB and 3 dB, ensuring efficient signal transmission within the passband while providing significant attenuation in the stopband.

Feature Summary

• Reflectionless architecture that absorbs out-of-band energy rather than reflecting it, preventing standing waves and system instability.
• Wide stopband coverage extending up to 12 GHz for effective suppression of high-frequency interference.
• Robust power handling capability suitable for demanding RF environments.

Applications

• RF test and measurement equipment requiring stable signal integrity
• Wireless communication base stations and infrastructure
• Radar systems and electronic warfare applications

Procurement Notes

Verify the specific datasheet version and mechanical drawings prior to integration. Confirm that the 2.92 mm connector interface matches your system requirements. Ensure thermal management strategies align with the 2.0 Watt average input power specification to maintain performance reliability under continuous operation conditions.

Selection Notes

Select this component when reflectionless performance is critical to prevent signal distortion caused by reflected energy. The wide stopband up to 12 GHz makes it suitable for applications requiring broad-spectrum noise suppression. Consider the 2.92 mm termination style for compatibility with high-frequency interconnects.

Part Context

This part belongs to Mini-Circuits' ZXLF series of reflectionless filters, which are engineered to eliminate the negative effects of reflected signals common in traditional absorptive or reactive filters. The series supports various frequency ranges and configurations for diverse RF design needs.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Verify compatibility with existing circuit designs before considering alternative components.

FAQ

What is the primary advantage of the reflectionless design?

It absorbs out-of-band energy instead of reflecting it, which prevents standing waves and maintains system stability.

What is the maximum operating frequency of the passband?

The passband extends from DC to 220 MHz.