ST50HE can achieve a sensitivity of over -138 dBm. The high sensitivity combined with the integrated +14 dBm power amplifier yields industry leaking link budget making it optimal for applications..
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Countries adapted for RC1, RC3, RC5, RC6, RC7

SamplesCommercially available - est. Jul, 2021

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  - System

  • High performance Cortex-M4 32-bit RISC core operating up to 48 MHz
  • Embedded memories (256 Kbytes of Flash and 64 Kbytes of RAM) 
  • Hardware encryption AES 256-bit 
  • True random number generator (RNG) 

  - Clock Source

  • 32 MHz TCXO & 32 KHz XTAL 

  - Radio

  • Modulation: LoRa®, (G)FSK, (G)MSK and BPSK. Sigfox:DBPSK, 2GFSK. 
  • Max. RF Output power : +14 dBm 
  • High sensitivity: down to -138 dBm for LoRa @125kHz, SF12 
  • Automatic RF Sense and CAD with ultra-fast AFC 

  - System Peripherals

  •  Small footprint:12 mm x 12 mm x 1.22 mm(Typ.)
  •  2 DMA, 2 USART, 1 LPUART, 2 SPI, 3 I2C 
  •  RTC wakeup counter, SysTick, Watchdog 
  • High-efficiency SMPS step-down converter and independent power supplies for ADC, DAC and comparator analog inputs 
  • VBAT mode with RTC and 20x32-byte backup registers, battery voltage monitoring  
Downloadable resources
  • ST50HE_Brief_Ver.01.pdf

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Not certified yet


SamplesCommercially available - est. Jul, 2021
Where to buy ?

Through distributors

Warranty duration

1 year(s)


EXW – Ex Works

FOB – Free on Board

Technical Details

Product casing

Dimensions (in mm): 12 x 12 x 1.22

Weight: 0.4gr

Sigfox Connectivity


Max Tx Radiated Power: +14 dBm

Rx Sensitivity: -138 dBm

Product electrical characteristics

Power Supply: From 1.8V to 3.6V

Power Consumption:

Tx: 30 mA

Rx: 6.8 mA

Idle: 1.3 μA

Embedded Software

SDK: Yes

External antenna

No connector for an additional external antenna


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