GNSS / GPS Receivers
Lantronix PNT Series GNSS Receiver Modules
The PNT Series are embedded multi-constellation GNSS receiver modules that add positioning, navigation and timing to a host design, in a footprint-compatible 18-pin LCC package with single-frequency and multi-frequency versions.
From $10.00
Overview
About the Lantronix PNT Series
The PNT Series are self-contained, certified GNSS modules for designers adding positioning, navigation and timing to tracking, telematics, drone and infrastructure products. The PNT-SG3FS (also written PNT SG3FS) for single frequency and the PNT-SG4FM for multi-frequency share one footprint, so a board can be designed for either. Lantronix lists the series as NRFND (not recommended for new designs) and has published a product discontinuation notice; no successor is named on the product page.
The PNT-SG3FS uses an ST Microelectronics Teseo III receiver tracking up to 32 satellites across GPS, BeiDou, Galileo, GLONASS, SBAS and QZSS L1 bands, with -163 dBm tracking sensitivity and 1.5 m CEP accuracy. The PNT-SG4FM uses Teseo IV, adds GPS and QZSS L5, BeiDou B2a and Galileo E5a, and reaches 0.7 m with -162 dBm sensitivity. Both offer a 10 Hz fix rate, a time pulse accurate to +/- 12.4 ns and 65 mW tracking power.
Hosts connect over UART or slave I2C using NMEA output, and both modules run from -40 to 85 C. Assisted GNSS speeds time to first fix, and the PNT-SG3FS also accepts RTCM DGPS corrections and, with custom firmware, outputs carrier-phase data for PPP-RTK hosts. ST's Teseo Suite PC tool reads, modifies and saves module configurations.
Key capabilities
- Footprint-compatible upgrade path
- The single-frequency PNT-SG3FS and multi-frequency PNT-SG4FM share the same 9.7 x 10.1 mm 18-pin LCC footprint, so one PCB layout supports either module.
- Sub-meter multi-frequency accuracy
- The PNT-SG4FM adds L5, B2a and E5a signals and Lantronix rates its position accuracy at 0.7 m CEP, versus 1.5 m for the PNT-SG3FS.
- Precision timing output
- The time pulse is accurate to +/- 12.4 ns at 99% using GPS plus GLONASS, suiting network synchronization and small-cell timing.
- Low-power operation
- Tracking draws 65 mW and standby current is 10 uA or less, with a 1.8 V or 3.3 V supply on the PNT-SG3FS and 3.3 V on the PNT-SG4FM.
- On-module flash features
- Embedded flash supports firmware updates; the PNT-SG3FS also adds data logging, geofencing, odometer and 5-day autonomous assisted GNSS.
- Antenna status detection
- The PNT-SG4FM integrates an LNA and SAW filter and detects antenna short and open circuits for field diagnostics.
How to choose the right PNT Series part number
Choose the receiver first, then the packaging. PNT-SG3FS parts carry the Teseo III single-frequency receiver; PNT-SG4FM parts carry the Teseo IV multi-frequency receiver. The suffix sets the format: -TR is tape and reel for production (PNT-SG3FS-TR at 1,000 units per reel, PNT-SG4FM-TR at 800), -CT is cut tape in a box of 50 units for prototypes and pilot builds, and -EVAL is a standalone evaluation kit (PNT-SG3FS-EVAL, PNT-SG4FM-EVAL) with a GNSS antenna and USB cable.
Configure & order
Find your PNT Series part number
Every orderable PNT Series configuration, filtered by the specs that actually differ between them. Pick what you need on the left and the matching part numbers appear here.
PNT-SG3FS-TR
$10.00
Ships on backorder
PNT-SG3FS-CT
$12.00
Ships on backorder
PNT-SG4FM-TR
$15.35
Ships on backorder
PNT-SG4FM-CT
$18.42
Ships on backorder
Complete the deployment
Accessories, renewals & add-ons
Everything sold for the PNT Series, organized by what it does — evaluation & development kits— each with why you'd add it.
Evaluation & development kits
2 itemsPNT-SG3FS-EVAL
PNT-SG3FS-EVAL
PNT Series GNSS evaluation kit for testing the PNT-SG3FS module.
$275.00
Ships on backorder
PNT-SG4FM-EVAL
PNT-SG4FM-EVAL
GNSS evaluation kit for the PNT-SG4FM module. It provides a standalone platform for testing performance and configuration with ST Microelectronics’ Teseo Suite PC tool.
$275.00
Ships on backorder
Compatibility taken from the Lantronix part-number tables for the PNT Series. Don't see what you need? Request a quote — we can source the full Lantronix catalog.
Where the PNT Series is used
- Fleet management and asset tracking devices
- Positioning for drones and UAVs
- Time synchronization for small cells and utility networks
- Precision agriculture, virtual fencing and livestock tracking
- Personal, pet and search-and-rescue locators
PNT Series datasheets & documentation
PNT Series FAQ
What is the difference between the PNT-SG3FS and PNT-SG4FM?
The PNT-SG3FS uses a Teseo III single-frequency receiver with 1.5 m CEP accuracy, -163 dBm sensitivity and on-module logging, geofencing and odometer. The PNT-SG4FM uses Teseo IV, adds L5, B2a and E5a bands, reaches 0.7 m accuracy and integrates an LNA, SAW filter and antenna detection.
Is the Lantronix PNT Series still recommended for new designs?
No. Lantronix lists the PNT Series as NRFND, not recommended for new designs, and has issued a product discontinuation notice. The modules remain listed for existing designs, so check the notice before committing production volumes.
Which GNSS constellations does the PNT Series support?
Both modules track GPS, GLONASS, BeiDou, Galileo, SBAS (WAAS, EGNOS, MSAS, GAGAN) and QZSS L1 signals. The PNT-SG4FM adds GPS and QZSS L5, BeiDou B2a and Galileo E5a, and custom firmware can support IRNSS instead of GLONASS.
What is included in the PNT evaluation kit?
Each evaluation kit is a standalone test board powered by USB or battery, with an SMA antenna connector, PPS output LED, on/off and reset buttons, a 1558-1615 MHz GNSS antenna and a USB-A to micro-B cable. NMEA data is available over UART via USB or I2C.
What host interfaces and supply voltage do PNT modules use?
Both modules communicate with the host over UART and slave I2C. The PNT-SG3FS accepts a 1.8 V or 3.3 V VCC/VBAT supply, while the PNT-SG4FM requires 3.3 V. Operating temperature for both is -40 to 85 C.
