SMS201

RF Diode Overview

The SMS201 is a silicon Schottky diode housed in a molded plastic DFN package, designed for broadband zero-bias detection. It operates effectively beyond 26.5 GHz with power detection capabilities up to 10 dBm. Key electrical specifications at +25°C include a breakdown voltage of 1 V at 100 µA reverse current and a forward voltage ranging from 60 mV to 120 mV at 100 µA forward current. The device exhibits a typical total capacitance of 0.08 pF at 6-8 GHz and a tangential signal sensitivity of -54 dBm at 10 GHz. Absolute maximum ratings specify a reverse DC voltage of 1 V, forward current of 20 mA, and junction temperature of +175°C.

RF Diode Feature Summary

• Small footprint design measuring only 50 x 30 mils
• Operates as a simplest broadband detector without requiring DC bias
• Very low barrier height providing good sensitivity and low flicker noise
• Features very low parasitic package inductance and low package capacitance

RF Diode Applications

• Broadband zero bias detection
• Power detection applications up to 10 dBm
• High-frequency circuits operating beyond 26.5 GHz

RF Diode Procurement Notes

Verify the specific datasheet revision (e.g., Rev. V1) when sourcing components to ensure alignment with current manufacturing standards. Confirm compliance with RoHS directives and check for any product change notifications that may affect physical dimensions or electrical characteristics prior to final procurement decisions.

RF Diode Selection Notes

Select the SMS201 for applications requiring high-speed detection without external biasing networks. Ensure the system can accommodate the absolute maximum reverse DC voltage of 1 V. Consider the small DFN package size for space-constrained designs and verify thermal management requirements given the dissipated power rating of 100 mW.

RF Diode Part Context

The SMS201 belongs to MACOM's portfolio of silicon Schottky diodes engineered for RF and microwave signal processing. Unlike PIN diodes often used for switching, this component utilizes a Schottky junction optimized for rectification and detection tasks. Its construction focuses on minimizing parasitic elements to maintain performance at millimeter-wave frequencies.

RF Diode Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Evaluate alternative Schottky detectors based on matching capacitance values, sensitivity metrics, and package compatibility if substitution is required.

RF Diode FAQ

What is the maximum frequency of operation for the SMS201?

The SMS201 is designed to operate beyond 26.5 GHz.

Does the SMS201 require an external DC bias for detection?

No, it is designed as a broadband zero-bias detector, eliminating the need for DC bias.

What is the typical tangential signal sensitivity at 10 GHz?

The typical tangential signal sensitivity is -54 dBm at 10 GHz with a noise figure of -3 dB.