XLF-312H+

Overview

The XLF-312H+ is a three-section reflectionless low-pass filter from Mini-Circuits, designed for RF applications up to 5.6 GHz cutoff frequency. It utilizes a novel topology that absorbs and terminates stopband reflections, ensuring signal integrity in sensitive circuits. The component operates within a bandwidth of 2.2 dB and maintains a 50 Ohm impedance. Packaged in a compact 12-VQFN exposed pad surface-mount format, it supports board mounting with SMD/SMT termination. The device functions reliably across an extended temperature range from -40°C to +85°C, making it suitable for demanding environments.

Feature Summary

• Eliminates stopband reflections through absorptive termination
• Three-section filter topology for enhanced performance
• Compact 12-VQFN surface-mount package design

Applications

• Pairing with sensitive RF devices requiring reflectionless operation
• High-performance S-band upconverter assemblies
• RF signal chain filtering in communication systems

Procurement Notes

Verify the specific datasheet version and electrical characteristics directly from Mini-Circuits official documentation before integration. Confirm that the 12-VQFN package dimensions and thermal requirements align with your PCB layout constraints. Ensure compatibility with your system's impedance and frequency specifications. Cross-reference the part number suffix to confirm exact performance parameters as defined by the manufacturer.

Selection Notes

Select this component when stopband reflections must be absorbed rather than reflected to protect downstream sensitive components. The three-section topology offers superior rejection compared to standard filters. Consider the 12-VQFN package size for space-constrained designs. Verify that the 5.6 GHz cutoff meets your application's frequency requirements and that the operating temperature range covers your environmental conditions.

Part Context

This component belongs to Mini-Circuits' XLF series of reflectionless filters, which are engineered to address issues caused by signal reflections in RF systems. Unlike traditional filters that reflect out-of-band signals, these devices terminate them internally. This series is widely used in modern wireless infrastructure and test equipment where signal purity and component protection are critical.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.