RLP-137+

Overview

The RLP-137+ is a surface-mount lumped LC low-pass filter manufactured by Mini-Circuits. It provides a frequency range from DC to 137 MHz with a nominal system impedance of 50 Ohms. The component utilizes an SMD/SMT termination style within an 8-SMD, no-lead package measuring 8.89 mm x 8.89 mm x 2.54 mm. It supports an operating temperature range of -40°C to 85°C and handles a maximum RF power input of 0.5W.

Feature Summary

• High rejection characteristics for effective signal filtering
• Sharp insertion loss roll-off for precise frequency control
• Excellent VSWR performance with typical values of 1.1:1 in the passband

Applications

• RF signal conditioning circuits
• Radio frequency interference suppression
• Communication system front-end filtering

Procurement Notes

Verify the specific datasheet version (URJ/RAV) against your design requirements. Confirm that the 0.5W maximum RF power input aligns with your system's power levels. Ensure the 8.89 mm x 8.89 mm footprint fits your PCB layout constraints. Check RoHS compliance status if required by your manufacturing standards.

Selection Notes

Select this component when a compact, surface-mount solution is needed for frequencies up to 137 MHz. The 50 Ohm impedance matches standard RF systems. Consider the thermal limits (-40°C to 85°C) for environmental suitability. The lumped LC topology offers a balance between size and performance for general-purpose filtering.

Part Context

This part belongs to Mini-Circuits' RLP series of low-pass filters. It is distinct from connectorized variants like the ZX75LP-137+, which share the same cutoff frequency but differ in physical interface. The RLP-137+ is designed specifically for surface-mount assembly, offering space efficiency compared to through-hole or connectorized alternatives.

Replacement Considerations

Direct substitutes are not explicitly listed in the provided documentation. Evaluate other Mini-Circuits RLP models with similar cutoff frequencies for potential compatibility, ensuring package dimensions and impedance match.