HSMS-2850-BLKG

RF Diode Overview

The HSMS-2850-BLKG is a zero bias Schottky detector diode from the HSMS-285x family, designed for small signal applications below 1.5 GHz. It features a single diode configuration in an SOT-23 or SOT-143 package. Key electrical specifications include a typical forward voltage of 150 mV at 0.1 mA, maximum reverse leakage of 250 µA at 2 V, and junction capacitance of 0.30 pF. The device exhibits high detection sensitivity up to 50 mV/µW at 915 MHz and low flicker noise of -162 dBV/Hz at 100 Hz. Absolute maximum ratings specify a peak inverse voltage of 2.0 V and an operating temperature range from -65°C to +150°C.

RF Diode Feature Summary

• Optimized for small signal detection where primary DC bias power is unavailable
• Provides matched diodes for consistent performance when multiple devices are used
• Offers better thermal conductivity for higher power dissipation capabilities

RF Diode Applications

• RF/ID (Radio Frequency Identification) systems
• RF Tag applications
• Zero bias crystal video receivers

RF Diode Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific manufacturing date codes relevant to your supply chain requirements. Ensure proper ESD handling precautions are observed during storage and assembly to prevent damage to the sensitive semiconductor junction.

RF Diode Selection Notes

Select this component for frequencies below 1.5 GHz with input power levels under -20 dBm. For higher power detector applications above -20 dBm, consider the HSMS-282x series for frequencies below 4.0 GHz or the HSMS-286x series for frequencies above 4.0 GHz. Ensure the design accommodates the specific impedance matching requirements for the chosen frequency band.

RF Diode Part Context

This part belongs to the HSMS-285x series of surface mount zero bias Schottky detector diodes manufactured by Broadcom Limited (formerly Avago). The series includes various configurations such as single, pair, trio, bridge, and quad diodes in miniature packages like SOT-23, SOT-143, SOT-323, and SOT-363. These components are engineered for low-cost, high-volume designs requiring high detection sensitivity.

RF Diode Replacement Considerations

For detector applications with input power levels greater than –20 dBm, use the HSMS-282x series at frequencies below 4.0 GHz, and the HSMS-286x series at frequencies above 4.0 GHz. The HSMS-285x series is not recommended for these higher power level applications.

RF Diode FAQ

What is the maximum recommended input power for the HSMS-2850?

The HSMS-2850 is optimized for small signal applications with input power levels less than -20 dBm. It is not recommended for applications with input power levels greater than -20 dBm.

How does the HSMS-2850 handle flicker noise?

The HSMS-2850 features low flicker noise, specified as -162 dBV/Hz at 100 Hz. This characteristic helps maintain sensitivity in crystal video receivers utilizing the diode at low video frequencies.

What packaging options are available for the HSMS-285x series?

The HSMS-285x series is available in Surface Mount SOT-23/SOT-143 packages, as well as miniature SOT-323 and SOT-363 packages. The HSMS-2850 specifically uses the SOT-23 or SOT-143 configuration.