SARA-G3 - Versatile 2.5G GSM/GPRS Cellular Modules

The u-blox SARA-G3 series of 2.5G GSM/GPRS cellular modules features extremely low power consumption and a miniature LGA form factor.

The SARA-G3 series of GSM/GPRS modules feature extremely low power consumption and a miniature LGA form factor. SARA-G3 modules are interchangeable, and have been designed with the diverse needs of M2M customers in mind. Different functionalities and feature sets are available to meet different customer and application requirements. SARA-G350 and SARA-G340 are full-feature GSM/GPRS modules with a comprehensive feature set, including an extensive set of internet protocols (TCP, UDP, HTTP and FTP). They have fully integrated access to u-blox GNSS positioning chips and modules, along with embedded A-GNSS (AssistNow Online and AssistNow Offline) functionality.

SARA-G350 is the quad-band version for global connectivity and SARA-G340 (900/1800 MHz) is the dual-band version for cost optimized use in Europe and Asia. Their rich feature set enables customers to easily develop a wide range of M2M devices with minimum software development on the host processor.

SARA-G300/G310 modules target high volume, cost sensitive applications, and provide "bit pipe" GSM/GPRS functionalities while minimizing the customer's total cost of ownership. Functionalities requiring dedicated and expensive hardware components are eliminated where they are not needed or can be implemented in the host processor.

The SARA-G350 ATEX is an ATEX / IECEx certified variant that further complements the product family by offering the ideal solution for the development of smart devices deployed in potentially explosive environments.


  • GSM/GPRS functionality scalable to customer needs
  • Seamless drop‑in migration from SARA‑U UMTS/HSPA modules
  • Smallest footprint; lowest standby current: < 0.90 mA
  • Extended temperature range: -40 to +85°C
  • Simple integration of u‑blox GNSS and A‑GNSS
  • CellLocate®: location based on cellular network

For sales and technical development support from our in-house engineering team, please contact the Alpha Micro team.

Parameters Specifications

GSM 850/900/1800/1900 MHz¹

GSM 900 /1800 MHz²

3GPP Release 99


GPRS Class 10, CS1-CS4 - up to 85.6 kb/s

PBCCH support


GSM max 9.6 kb/s

AT Commands

3GPP 27.005, 3GPP 27.007

u-blox AT command extension

3GPP 27.010 MUX protocol


MT/MO PDU/Text mode

Firmware upgrade


SARA-G340/G350 only:


Echo cancellation

Noise reduction


Embedded TCP/IP, UDP/IP, HTTP/FTP, SSL and TLS 1.2 support


Jamming detection

GNSS Interfaces

Direct access to u-blox GNSS via module

AssistNow software for faster acquisition

CellLocate® & Hybrid Positioning

Special features

In-band modem

Bearer Independent Protocol (BIP)

IPv6 support over PPP

eCall and ERA-GLONASS support

¹ SARA-G310/G350

² SARA-G300/G340

Common to all modules:

50 Ω SMT pad

Serial port

1 UART for data and AT commands

1 UART for AT commands, tracing, and FW update


1.8 V and 3 V

SARA-G340/G350 only:

4, controllable over AT commands

GNSS serial 1 DDC (I²C)

1 analog

1 digital (I²S/PCM)

Electrical data
Power supply 3.00 - 4.50 V (extended)
Power consumption

Power Off: <40 µA

Idle mode¹: <0.9 mA

Idle mode²: <5.0 mA

Connected: < 250 mA

¹ SARA-G300 and SARA-G310: requires external 32 kHz signal

² SARA-G300 and SARA-G310: without external 32 kHz signal

Certifications & approvals
SARA-G3 modules offer a comprehensive set of regulatory certifications and approvals, including GCF, PTCRB, FCC, ICASA, RED (formerly known as R&TTE), ISED (formerly known as IC), NCC, and Anate
Environmental data, quality & reliability
Operating temperature -40°C to +85ºC (extended range)
RoHS compliant (lead-free)
Qualification according to ISO 16750
Manufactured in ISO/TS 16949 certified production sites
ATEX / IECEx certification (SARA-G350 ATEX)



96 pin LGA: 16.0 x 26.0 x 2.4* mm, < 3 g

* Module height is 2.4 mm from version 02 onwards (3 mm in version 01)


Click here for the GSM/UMTS/LTE/CDMA modules linecard.

Part Number Description

Reel Size


Cost optimized dual-band (900/1800 MHz) GSM/GPRS data module



Cost optimized quad-band GSM/GPRS data module

SARA-G340 Dual-band (900/1800 MHz) GSM/GPRS module, extended feature set
SARA-G340 ATEX Dual-band (900/1800 MHz) GSM/GPRS module, extended feature set, ATEX/IECEx certified 250

Quad-band GSM/GPRS module, extended feature set


SARA-G350 ATEX Quad-band GSM/GPRS module, extended feature set, ATEX/IECEx certified

Evaluation Kit for SARA-G300/G310

EVK-G35 Evaluation Kit for SARA-G340/G350
RIL software

Android 2.3 and 4.x

Embedded Windows 6.x 7.x

The EVK-G31 and EVK-G35 evaluation kits provide simple, flexible and ready-to-use environments for evaluating u-blox' SARA GSM/GPRS wireless modules, as well as for designing and testing of wireless and GPS applications. The kits are very user-friendly, and have both USB and RS232 interfaces for development, testing and tracing.


The kits come with a built-in u-blox GPS receiver module, giving designers the flexibility to either test GSM/GPRS functionality alone or to integrate it together with u-blox GPS technology.

For evaluating Assisted-GPS (A-GPS) a u-blox AssistNow A-GPS client is embedded in the firmware stack (EVK-G35 only), providing users with the option of integrating and testing our license-free A-GPS solutions.

EVK-G31 and EVK-G35 evaluation kits include m-center and u-center: u-blox' interactive evaluation tools for configuration, testing, visualization and data analysis of wireless and GPS receivers. These powerful and easy to use tools provide useful assistance during all phases of a system integration project.

Related Products

Recently Viewed Products

Last updated: 22 November 2017