HSMS-285P-BLKG

RF Diode Overview

The HSMS-285P-BLKG is a surface mount zero bias Schottky detector diode from the HSMS-285x family, manufactured by Broadcom Limited. It features a bridge quad configuration within an SOT-323 package. The device is optimized for small signal applications with input power below -20 dBm at frequencies under 1.5 GHz. Key electrical specifications include a typical forward voltage of 150 mV at 1.0 mA, maximum reverse leakage current of 250 µA at 2 V, and typical junction capacitance of 0.30 pF at -0.5 V to -1.0 V. 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 small signal detection in RFID and RF tag applications where primary DC bias power is unavailable.
• Manufacturing process ensures matched diodes taken from adjacent wafer sites for consistent performance.
• Provides high detection sensitivity up to 50 mV/µW at 915 MHz with low flicker noise characteristics.

RF Diode Applications

• RFID (Radio Frequency Identification) systems
• RF Tag circuits
• 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 End-of-Life notifications or product change notices prior to procurement. Ensure handling precautions for electrostatic sensitive devices are observed during storage and assembly.

RF Diode Selection Notes

Select this component for designs requiring zero bias detection at frequencies below 1.5 GHz with input power levels under -20 dBm. For higher power inputs, consider the HSMS-282x series for frequencies below 4.0 GHz or the HSMS-286x series for frequencies above 4.0 GHz. Ensure the circuit design accommodates the specific impedance matching requirements for the bridge quad configuration.

RF Diode Part Context

This part belongs to the HSMS-285x family of surface mount zero bias Schottky detector diodes. The family includes various configurations such as single, pair, trio, and bridge quad options housed in SOT-23, SOT-143, SOT-323, and SOT-363 packages. The HSMS-285P specifically denotes the bridge quad variant in the SOT-323 package.

RF Diode Replacement Considerations

For input power greater than -20 dBm, use the HSMS-282x series for frequencies below 4.0 GHz or the HSMS-286x series for frequencies above 4.0 GHz. Other HSMS-285x variants with different internal configurations (e.g., HSMS-285C, HSMS-285L) may be considered if the circuit topology supports the alternative diode arrangement.