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ALF51: Intel Atom / Pentium/ Celeron 1.8inch SBC
ALF51 is a 1.8” SBC based on the Intel Atom® Processor E3900 Series, ideal for many space-critical and thermally demanding applications, including robotics, industrial automation and medical devices.
As small as a credit card (84 x 55 mm), the ALF51 is designed with 30% extended process capability and low power consumption of an average of 9W TDP thus providing energy efficiency. Thanks to the fanless design and its industrial-grade features that support extended temperature range of up to -40 to 85°C and 12VDC, the ALF51 SBC provides reliable performance even under harsh conditions whilst ensuring long-term service life up to 15 years.
The ALF51 SBC is fully equipped with various I/O ports such as 2 Intel GbE, 1 COM, 2 USB 3.1 Gen 1 and 1 USB 2.0. The ALF51 is especially designed as an IoT gateway with dual GbE, where one GbE can be connected to the network server and the other GbE to the respective device, e.g. an I/O controller or a camera that receives and transmits data. It also supports the Mini-PCIe expansion for WIFI / BT and 3G/4G in IoT solutions
- Intel Atom® Processor E3900 Series
- Single Channel LPDDR4 Memory Down up to 4GB
- Mini DP++ resolution supports up to 4096x2160 @ 60Hz
- Comprehensive I/O: 2 Intel GbE, 1 COM, 2 USB 3.1 Gen 1, 1 USB 2.0
- Expansion and Storage: 1 Mini PCIe, 1 SMBus
- OS Support: Windows 10 IoT Enterprise (64-bit), Linux
- 15 year CPU lifetime of support until Q4'31 (Based on Intel IOTG Roadmap)
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Feature | Specification |
---|---|
CPU Architecture | X86 |
CPU Manufacturer | Intel |
CPU Model | Intel Atom® Processor E3900 Family Intel Atom® x5-E3940 Processor, Quad Core Intel Atom® x5-E3930 Processor, Dual Core Intel® Pentium® Processor N4200, Quad Core Intel® Celeron® Processor N3350, Dual Core |
CPU Frequency | Up to 2.5GHz |
Memory | Up 4GB DDR4 |
Primary Storage | Up to 64GB eMMC |
Graphics | Intel® HD Graphics |
Display Interface | Mini DP ++ |
Display Resolution (Max) | 4096x2160 |
Ethernet Ports | Up to 2 Intel GbE (RJ-45) |
USB 2.0 Ports Host | Up to 1 |
USB 3.1 Gen 1 | Up to 2 |
UART/Serial | 1 x RS-232/422/485 |
DIO | 1 x 8-bit DIO |
SMBus | 1 x SMBus |
Extension | 1 x full-size Mini PCIe (PCIe / USB 2.0, optional USB 3.1 Gen1 / USB 2.0) |
TPM | fTPM 2.0 |
Power Supply Voltage | Single 12V +/- 10% DC |
Dimensions | 84 x 55 x 15 mm |
Operating Temperature | Commercial: 0° to 60° C Extended: -20° to 70° C Industrial: -40° to 85° C |
OS Support (UEFI only) | Windows 10 IoT Enterprise (64-bit) Linux |
BSP | Full Board Support Package and ready-to-run images |
Certifications | CE, FCC, RoHS |
* Optional feature available on this product


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ALF51 Packing list
- 1 ALF51 board
- 1 USB port cable (Length: 200mm)
- 1 COM port cable (Height: 300mm)
- 1 Heat spreader (Height: 11mm)
Optional Items
- Heat sink for E series CPU 0 to 60°C / wide temp(Height: 27mm)
- Heat sink for N series CPU 0 to 60°C (Height: 23mm)
- Power adapter (60W, 12V, DC jack)
- 2 pole terminal to DC Jack cable

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