BC51M - Rugged Industrial Box PC with Intel Atom Processor E3900 Series

For Onboard Applications

The BC51M is a maintenance-free box computer that has been designed for use in vehicles, e.g. in trains, commercial vehicles, mobile machines or airplanes for applications such as Internet-On-Board, positioning via GNSS, entertainment or predictive maintenance. An MVB option is available to support integration into the Train Communication Network (TCN).

Wireless Communication

The BC51M can take over typical on-board wireless functions, whether it is an Internet connection for passengers or locating the vehicle. Two PCI Express Mini Card slots and two micro-SIM slots provide flexibility in implementing mobile service standards up to 4G LTE or WLAN/WLAN IEEE 802.11, and derivates.

Solid Processing Performance

The BC51M is powered by an Intel Atom processor from the E3900 series running at up to 1.6 GHz. Other dual/quad core processors of the Intel Atom E3900 series can be used, giving high scalability in CPU performance. The box PC features 8 GB DDR3 SDRAM and offers an SD card slot. A slot for a SATA hard-disk/solid-state drive can be provided within the housing as an option in a special product version.

Fanless Operation for Mobile Applications

The system is designed for fanless operation at temperatures from -40 °C to +70 °C (+85 °C for up to 10 minutes), its special aluminum housing with cooling fins serves as a heat sink for the internal electronics and in this way provides conduction cooling.

Railway-Compliant PSU with Ignition Function

The BC51M comes with an integrated 30W wide-range DC/DC converter compliant with EN 50155 (nominal input voltages 24 and 36 V). The 24 V DC version is prepared for ISO

7637-2 (E-mark for automotive). 110 V DC nominal input voltage is available as an option

and designed for onboard rail applications. The power can be switched on and off using an ignition signal on the power connector, and a shutdown-delay time after switching off the ignition signal can be adjusted by software.

Flexible I/O

The BC51M supports up to two DisplayPort interfaces. A multitude of other I/O is available at the front, including two Gigabit Ethernet, one USB 2.0 and one HD audio. Two slots are available for legacy serial I/O (RS232), CAN bus, MVB or IBIS as options.

Long-Term Available and Future-Safe

Long-term availability until 2027 ensures an extended product life and future-safety.


  • Intel Atom E3900 series
  • Up to 8 GB DDR3 DRAM soldered, ECC
  • 32 GB eMMC soldered
  • 2 DisplayPorts, up to 4096 x 2160 pixels each
  • 2 Gigabit Ethernet, 1 USB 2.0
  • WLAN, 4G LTE, GNSS via 2 PCI Express Mini Card slots
  • 2 Slots for IBIS, RS232, RS485, RS422
  • -40 °C to +70 °C (+85 °C), fanless
  • Compliant to EN 50155 (railways)
  • Prepared for ISO 7637-2 (E-mark for automotive)