GigaStax Rugged - Automotive GigaBit Ethernet Switch

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Industrial Gigabit Ethernet with Modular Connectivity

GigaStax Rugged is a very small managed and unmanaged ethernet switch that fits five 10/100/1000Mbps copper (PHY) ethernet ports and one MAC RGMII port in an ultra compact 48mm x 48mm form factor. GigaStax Rugged is designed to provide more easy expandability than GigaBlox Rugged, while maintaining the rugged features. This makes GigaStax Rugged ideal for harsh applications where compactness and connector flexibility are crucial.

Stylised view of GigaStax showing the dimensions 48mm square

GigaStax Rugged has a wide input voltage range of 5 to 60V with transient, over-voltage and reverse protection onboard, along with dedicated stable power-on-reset circuitry, meaning it can be dropped directly into a system powered by unregulated voltage with non-monotonic startup. 

The -40°C to +85°C ambient operating range is achieved using automotive grade passives and industrial grade semiconductors.

Connector Modularity

GigaStax Rugged uses a Samtec Razor Beam (LSHM-140-04.0-L-DV-A-S-K-TR) to breakout the following signals:

- Five gigabit ethernet PHY ports (for connection with external devices)
- One RGMII MAC port 
- I2C switch management bus + reset line, power enable
- Input voltage 
- 3.3V rail output for supplying other devices 

Pinout of the modular samtec used on GigaStax, showing all the ethernet and control signals

This allows a daughterboard to be mated with GigaStax Rugged for total flexibility of expansion on the PHY port connectors, connected MAC devices etc. We sell a standard daughterboard that breaks out the five ports onto PicoBlade connectors, like the rest of our range. 

We offer a standard daughterboard, GigaStax Rugged PicoConn, that breaks out all connections to PicoBlade and FFC connectors.

Annotated view of GigaStax PicoConn, the picoblade breakout board used with GigaStax

Buy GigaStax Rugged PicoConn


Onboard Transformers

GigaStax Rugged contains all LAN transformers onboard to be fully compliant with IEEE 802.3 providing 1500V AC isolation between all ports. This means the daughterboard only needs to provide connector breakout.

Annotated view of GigaStax showing the onboard transformers

Onboard Microcontroller

GigaStax Rugged contains an STM32 microcontroller onboard that runs switch configuration firmware over I2C. This firmware can be modified to access basic switch management features such as VLANs, Port Mirroring and IGMP.

Back view of GigaStax showing the samtec modular header



The RGMII port broken out on GigaStax Rugged provides a number of interesting expansion options, such as:

- Connecting to another MAC from a CPU on the daughterboard for switch configuration and routing management.
- Connecting a different PHY on the daughter (for example, FX fiber or T1 single pair ethernet).
- Connecting another switch on the daughterboard via RGMII to add more ports to the device.


Input Voltage Range 5-60V (reverse protected)
Power Consumption 1W idle, 3.3W at full data rate
Ports 5 x 10/100/1000Mb ports + 1 MAC port
Maximum Frame Size 9600 Bytes (Not Jumbo)
Operating Temperature -40 to +85°C
Storage Temperature -55 to +125°C
Dimensions 48mm x 48mm x 8.17mm


Custom Cables

All our boards are shipped with the required 0.3 meter power and data cables included, so you do not need to purchase extra cables. However if you need custom cable lengths for your application, you can order those here

Electronics > Networking