Multi-Constellation GNSS

The SE873K5 is the latest addition to the SE873 family and is the natural migration path from SE873 and SE873Q5. The SE873K5 is a multi-constellation receiver in 7x7x2.25 mm QFN-like package including embedded SQI flash, RTC, TCXO.

  • Latest generation chipset
  • Complete GNSS module, including TCXO, RTC, and flash memory
  • Full GNSS compliance: GPS, Glonass, Galileo and BeiDou
  • Flexible power management modes allow improvement to the battery life
  • Supports both local and server-based A-GNSS for improved TTFFs
  • Satellite Based Augmentation System (SBAS) corrections increase positioning accuracy
  • Battery friendly
Module SE873K5

Product Description

The SE873K5 is a multi-constellation receiver in 7x7x2.25 mm QFN-like package including embedded Flash memory, RTC, TCXO. SE873K5 is able to track and navigate simultaneously all four GNSS constellations (GPS + Galileo + Glonass + Beidou). The SE873K5 provides GNSS information over a serial port (UART, I2C, or *SPI interface supported) using the NMEA protocol, and its low power-processing core delivers customizable power-saving modes to optimize current draw for the desired use case. The receiver supports both local and server-based Assisted GNSS (A-GNSS) for improved TTFF. Satellite-Based Augmentation System (SBAS) corrections from WAAS, EGNOS, MSAS, and GAGAN can be used to increase positioning accuracy. The internal flash memory allows Firmware (FW) updates and customization as well as syntethic ephemeris storage.

Form Factor Family

The SE873K5 sub-compact form factor is a 7x7x2.25 mm QFN package.



  • Frequency Bands: GPS L1, GLONASS L1, Galileo E1, BeiDou B1, QZSS L1
  • Standards: NMEA
  • SBAS (EGNOS, WAAS, GAGAN and MSAS)or QZSS L1S capability
  • RTC for efficient power management
  • Jammer rejection
  • Local and server-based A-GNSS



  • RoHS compliant


  • Dimensions: 7 x 7 x 2.25 mm
  • 20-pad QFN package
  • Weight: 0.5 g

Temperature Range

  • Operating temperature: -40° C to +85° C
  • Storage temperature: -40° C to +85° C

Power Supply

  • Range from 1.75 up to 1.85 V

Power Consumption (@1.8V)

  • Acquisition (GGGB): 41 mW
  • Tracking / Navigation (GGGB): 42 mW
  • RTC mode: 31 uW


  • Acquisition (GGGB): -147 dBm
  • Tracking / Navigation (GGGB): -165 dBm


  • PTWS commands
  • FW upgradable
  • Locally generated predictions (EASY)
  • Server generated predictions (EPO)
User Guides, Documentation, Application Notes and Firmware

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