RLP-158+

Overview

The RLP-158+ is a lumped LC low-pass filter manufactured by Mini-Circuits, designed for radio frequency applications. It operates within a DC to 158 MHz passband and features a 50 Ohm impedance. The component utilizes an SMD surface-mount package without leads, specifically the GP731 case style. Electrical specifications include a 172 MHz cutoff frequency, with stopband attenuation exceeding 20 dB from 220 to 255 MHz and greater than 40 dB from 255 to 1000 MHz. Insertion loss is typically 1.1 dB.

Feature Summary

• Lumped LC architecture providing effective signal conditioning in a compact form factor
• Designed for 50 Ohm systems with stable matching characteristics across the operating bandwidth
• Surface-mount construction facilitates automated assembly and integration into dense PCB layouts

Applications

• RF signal conditioning in communication equipment
• Harmonic suppression in transmitter output stages
• Interference filtering in receiver front-ends

Procurement Notes

Verify the specific ordering suffix to ensure the correct termination and packaging configuration matches your assembly requirements. Confirm that the GP731 package dimensions align with your PCB footprint design. Check for RoHS compliance status if required by your manufacturing standards. Ensure the supplier provides the official datasheet for final electrical verification before procurement.

Selection Notes

Select this component when a sharp roll-off is required below 200 MHz with minimal insertion loss in the passband. The lumped LC design offers a smaller physical footprint compared to distributed line filters at these frequencies. Consider the thermal performance and power handling capabilities relative to your system's maximum signal levels. Verify compatibility with standard reflow soldering profiles for the SMD package.

Part Context

This part belongs to Mini-Circuits' RLP series of low-pass filters, which are engineered for general-purpose RF applications. The series covers various cutoff frequencies while maintaining consistent 50 Ohm impedance. These components are widely used in wireless infrastructure and test equipment where reliable frequency discrimination is necessary.

Replacement Considerations

Consult Mini-Circuits documentation for direct equivalents or updated versions within the RLP series. Verify that any substitute maintains the same GP731 package outline and electrical performance curves. Cross-reference pinout configurations if alternative packages are considered.