RLM-33H+

Overview

The RLM-33H+ is a broadband surface-mount limiter from Mini-Circuits, designed to protect sensitive receiver circuitry from high-power signals. It operates within a frequency range of 30 MHz to 3 GHz. Key electrical specifications include a low insertion loss of 0.23 dB and a fast recovery time of 16 ns. The device supports a maximum input power of 50 mW and functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Provides protection for sensitive receiver circuits against high-power signal damage
• Features wideband operation covering 30 MHz to 3 GHz
• Utilizes surface-mount technology for compact integration

Applications

• Protecting RF receiver front-ends from overload
• General-purpose limiting in wireless communication systems
• Signal conditioning in test and measurement equipment

Procurement Notes

Verify the specific suffix 'H+' during procurement, as it denotes the surface-mount package variant distinct from other packaging options like the standard RLM-33+. Confirm RoHS compliance status if required by your manufacturing standards. Ensure the ordering part number matches the exact frequency and power requirements documented in the official Mini-Circuits datasheet to avoid functional mismatches.

Selection Notes

Select the RLM-33H+ when a surface-mount solution is required for broadband limiting applications between 30 MHz and 3 GHz. Consider its 0.23 dB insertion loss for minimal signal degradation in low-power paths. Evaluate the 16 ns recovery time against system pulse requirements. Compare with through-hole alternatives only if board space constraints allow, noting that the H+ suffix specifically indicates the SMD form factor.

Part Context

This component belongs to Mini-Circuits' RLM series of general-purpose limiters. The RLM-33H+ is the surface-mount version of the RLM-33+, sharing identical electrical performance characteristics but differing in physical package type. This series is engineered for robust protection of RF receivers without introducing significant signal distortion or loss in the passband.

Replacement Considerations

The RLM-33+ serves as the direct through-hole equivalent with identical electrical specifications. Verify pinout compatibility if substituting into existing footprints, as the physical dimensions differ between the surface-mount H+ variant and the standard leaded package.