HSMS-2852-TR1

RF Diode Overview

The HSMS-2852-TR1 is a surface mount zero bias Schottky detector diode from the HSMS-285x series, designed for small signal applications below 1.5 GHz. It features a SOT-23 package containing a matched series pair of diodes. Key electrical specifications include a maximum forward voltage of 150 mV at 0.1 mA and a typical junction capacitance of 0.30 pF at -0.5 V to -1.0 V. The device exhibits high detection sensitivity with a typical voltage sensitivity of 40 mV/µW at 915 MHz and a tangential sensitivity of -57 dBm. Absolute maximum ratings specify a peak inverse voltage of 2.0 V and an operating temperature range of -65°C to +150°C.

RF Diode Feature Summary

• Optimized for low-cost, high-volume designs in small signal applications where primary DC bias power is unavailable.
• Provides high detection sensitivity suitable for RF/ID and RF Tag applications.
• Features low flicker noise characteristics to maintain receiver sensitivity.
• Includes matched diodes within the package to ensure consistent performance.

RF Diode Applications

• RF/ID (Radio Frequency Identification) systems
• RF Tag applications
• Crystal video receivers

RF Diode Procurement Notes

Verify the specific ordering suffix to confirm packaging quantity. The TR1 suffix indicates a 3000-unit tape and reel configuration on a 7-inch reel. Ensure compatibility with standard surface mount assembly processes, including lead-free reflow profiles. Confirm that the application input power remains below -20 dBm to avoid recommending alternative series models.

RF Diode Selection Notes

Select this component for narrow-band detector circuits requiring maximum sensitivity rather than broadband matching. The series pair configuration facilitates voltage doubler implementations. Verify that the system operates strictly within the small signal regime below 1.5 GHz. For higher input power levels or frequencies above 4.0 GHz, consult alternative series such as HSMS-282x or HSMS-286x respectively.

RF Diode Part Context

This part belongs to the Avago HSMS-285x family of zero bias Schottky detector diodes. The family includes single diodes, pairs, trios, and bridge configurations in SOT-23, SOT-143, SOT-323, and SOT-363 packages. The HSMS-2852 specifically denotes the series pair variant in the SOT-23 outline, optimized for impedance matching networks in RFID readers.

RF Diode Replacement Considerations

HSMS-2850 serves as the single diode equivalent in the same package. HSMS-2855 provides an unconnected pair option. For different package footprints, consider HSMS-285B (SOT-323 single) or HSMS-285C (SOT-323 series pair).

RF Diode FAQ

What is the recommended maximum input power for this detector?

The HSMS-285x series is designed for small signal applications with input power levels below -20 dBm. Higher power levels may require the HSMS-282x or HSMS-286x series.

How does the series pair configuration benefit circuit design?

The series pair allows for the creation of voltage doubler circuits, which add the voltage outputs of two diodes in series to increase overall voltage sensitivity and simplify RF impedance matching by adding impedances in parallel.

What is the typical flicker noise performance?

The device exhibits low flicker noise, typically -162 dBV/Hz at 100 Hz, which helps prevent sensitivity reduction in crystal video receivers operating at low video frequencies.