XLF-421+

Overview

The XLF-421+ is a reflectionless low-pass filter from Mini-Circuits, designed for signal conditioning applications. It operates within a frequency range of 0 Hz to 420 MHz and features a 50 Ohm impedance. The component utilizes a novel topology that absorbs and terminates stop-band signals, preventing reflections. It is available in an SMD/SMT termination style housed in a QFN-12 package.

Feature Summary

• Employs a reflectionless filter topology that absorbs and terminates stop-band signals
• Functions as a low-pass RF filter with a defined passband up to 420 MHz
• Designed for surface-mount integration using a QFN-12 package

Applications

• RF signal conditioning
• Low-pass filtering in microwave circuits
• Systems requiring absorption of out-of-band signals

Procurement Notes

Verify the specific datasheet version and manufacturer documentation to confirm electrical parameters and mechanical dimensions. Ensure compatibility with the intended PCB layout for the QFN-12 package. Cross-reference official Mini-Circuits resources for accurate handling and storage guidelines.

Selection Notes

Select this component when a low-pass filter with reflectionless characteristics is required. The 420 MHz cutoff suits applications needing effective stop-band absorption. Consider the QFN-12 package size for space-constrained designs requiring surface-mount technology.

Part Context

Mini-Circuits manufactures the XLF-421+ as part of its RF and microwave component portfolio. This series focuses on filters that mitigate signal reflections through internal termination, enhancing system stability in high-frequency environments.

Replacement Considerations

Consult official Mini-Circuits documentation for verified substitute part numbers. Do not assume generic equivalents provide identical reflectionless performance or package compatibility without explicit manufacturer confirmation.