The HSMS-285x family is a series of zero bias Schottky detector diodes designed and optimized for small signal (Pin <-20 dBm) applications at frequencies below 1.5 GHz. They are ideal for RF/ID and RF Tag applications where primary (DC bias) power is not available. This series is not recommended for detector applications with input power levels greater than –20 dBm. For frequencies below 4.0 GHz, use the HSMS-282x series, and for frequencies above 4.0 GHz, use the HSMS-286x series.
The HSMS-285x family from Avago provides surface‑mount zero‑bias Schottky detector diodes optimized for small‑signal applications (Pin < ‑20 dBm) at frequencies below 1.5 GHz. The series is offered in SOT‑23, SOT‑143, SOT‑323 and SOT‑363 packages and includes matched diode pairs for consistent performance.
The document details electrical characteristics, absolute maximum ratings, typical performance curves, and recommended PCB footprints. It also includes design notes on detector circuits, impedance‑matching networks, voltage‑doubler configurations, and recommended reflow soldering profiles for reliable assembly. This manual is written in Chinese.
| Detection Sensitivity | up to 50 mV/µW at 915 MHz |
|---|---|
| Peak Inverse Voltage (PIV) | 2.0 V |
| Junction Temperature (TJ) | 150 °C |
| Storage Temperature (TSTG) | -65 °C to 150 °C |
| Operating Temperature (TOP) | -65 °C to 150 °C |
| Package Types | SOT‑23, SOT‑143, SOT‑323, SOT‑363 |
| Tape & Reel Availability | Yes |
They are designed for small‑signal applications with input power less than –20 dBm.
The series is available in SOT‑23, SOT‑143, SOT‑323 and SOT‑363 packages.
Up to 50 mV per microwatt of input power at 915 MHz.
Peak inverse voltage 2.0 V, junction temperature 150 °C, storage temperature –65 °C to 150 °C, and operating temperature –65 °C to 150 °C.