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MEN Mikro BC51M - Rugged Intel Atom Box PC for Vehicle Applications

Intel Atom E3900 Series, -40 to +85C Operating


MEN Mikro's 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 SATA hard-disk/solid-state drive can be installed within the housing as an option.

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 aluminium 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 and is compliant with EN 50155 (nominal input voltages 24 and 36 V) as well as with ISO 7637-2 (E-mark for automotive) (nominal input voltage 24 V). 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 with a maximum resolution of 4096 x 2160 each. A multitude of other I/O is available at the front, including two Gigabit Ethernet, one USB 2.0, one HD audio and two slots for legacy serial I/O (RS232), CAN bus, MVB or IBIS.

Webinar: Rugged and Modular Box PC Family



CPU SpecThe following CPU types are supported:
• Intel Atom x5-E3930, dual core, 1.3 GHz, 6.5 W
• Intel Atom x7-E3950, quad core, 1.6 GHz, 12 W
ChipsetIntegrated in CPU
MemoryUp to 8 GB DDR3 SDRAM system memory, soldered
GraphicsIntegrated in CPU
2x DisplayPort 1.2a
Maximum resolution: 4096x2160 pixels @ 60 Hz, 24 bpp
Network2x 1000BASE-T, M12, X-coded, via front panel
StorageThe following mass storage devices can be assembled:
• SSD 2.5" (SATA)
• SD card
• HDD 2.5" (SATA)
The following mass storage devices are assembled:
• eMMC (soldered); 32 GB
USB1x USB 2.0, Type A, via front panel
AudioHD Audio
• 1x, D-Sub, 9-pin, plug
• Audio stereo in
• Audio stereo out
• SPDIF out
• Via front panel
BIOSAMI Aptio UEFI Firmware


ExpansionPCI Express Mini Card
• 2x PCI Express Mini Card slot
• Slot A: PCIe Full-Mini; PCIe x1, USB 2.0
• Slot B: PCIe Full-Mini; PCIe x1, USB 2.0
• Each slot with micro-SIM card slot, internally accessible
ElectricalSupply voltage:
• 24 V DC to 36 V DC nom. (EN 50155)
• 110 V DC nom. (EN 50155)
• 24 V DC nom. (ISO 7637-2)
• EN 50155 power interruption class S2

Isolation voltage 1,500 VDC
• Ethernet port 1, Ethernet port 2, power input, system ground (USB, Display Port, Audio...)
MechanicalDimensions: approx. 240 mm x 220 mm x 44.1 mm
Weight: 1.8 kg
Front protected according to IP20
SoftwareWindows 10 IoT Enterprise
TemperatureTemperature range (operation):
• -40 to +70°C; 10 min @ +85°C (EN 50155:2017, class OT4, class ST1, control cabinet)
• Air cooling, natural convection, airflow 0.4 m/s
• Fanless operation
Temperature range (strorage): -40 to +85°C (EN 60068-2-1:2007, Ab; EN 60068-2-2:2007, Bb)
Humidity+25/+55°C, 95 % (EN 50155:2017)
Vibration10 min @ 1.01 m/s² and 5 h @ 5.72 m/s² (EN 61373:2010, vehicle body, cat. 1, class B)
Shock50 m/s² / 30 ms (EN 61373:2010, vehicle body, cat. 1, class B)
MTBF262,804 h @ 40°C according to IEC/TR 62380 (RDF 2000)
Safety/CertificationElectrical Safety
• EN 50155:2017
• EN 50153:2014 + A1:2017
• EN 50124-1:2017
• EN ISO 13732-1:2006-09

Fire Protection
• EN 45545-2 (Railway) EN 45545-2:2013+A1:2015; EL9 (only PCB - attached components will be accepted)
• EN 50155:2017
EMCEMC Conformity (Automotive)
• EMC Radiated Emission: ECE R10 Rev.5
• EMC Conducted Emission: ECE R10 Rev.5
• EMC Immunity: ECE R10 Rev.5

EMC Conformity (Railway)
• EMC Radiated emission: EN 50121-3-2:2016, EMV 06
• EMC Conducted emission: EN 50121-3-2:2016
• EMC Immunity: EN 50121-3-2:2016

Product Compliance Radio Devices:
• EMC Radiated Emission: EN 301 489-1 V2.1.1
• EMC Conducted Emission: EN 301 489-1 V2.1.1
• EMC Immunity: EN 301 489-1 V2.1.1
Warranty2 Years

Ordering Details

BoardTo follow

Starter Kit for Box PC:
1x AC/DC power supply
2x DisplayPort to DVI adapter (active)
2x M12 to RJ45 Gbit Ethernet cable, X-coded
4x HF cable with U.FL plug to RP-SMA plug
USB Flash drive with example image
CustomisationNeed storage and/or I/O cards added? Need an operating system or your own software image loaded? We can help with that. We have a team of qualified and experienced engineers who can quickly accomplish this. Please contact us for further details.

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