Start Building with the World's Most Popular Microcontroller Board
The Arduino Uno R3 SMD is the surface-mount version of the iconic Arduino Uno — the go-to development board for beginners, students, and engineers alike. Featuring the ATmega328P-AU SMD chip, it offers the same proven performance as the DIP version in a more compact, professional form factor.
Key Specifications
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Microcontroller: ATmega328P-AU (SMD)
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Operating Voltage: 5V
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Input Voltage: 7–12V (recommended), 6–20V (limit)
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Digital I/O Pins: 14 (of which 6 provide PWM output)
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Analog Input Pins: 6
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Flash Memory: 32 KB (ATmega328P) — 0.5 KB used by bootloader
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SRAM: 2 KB | EEPROM: 1 KB
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Clock Speed: 16 MHz
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USB Interface: CH340 USB-to-Serial chip
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Form Factor: SMD (Surface Mount Device)
What’s in the Box
- 1 × Arduino Uno R3 SMD Compatible Board
- Note: USB Cable NOT included
Why Choose the SMD Version?
The SMD variant uses a surface-mounted ATmega328P chip, making it slimmer and more resistant to physical shock — ideal for embedded installations, compact enclosures, and production prototypes. It is fully software-compatible with the standard Arduino Uno R3.
Compatible With
- All standard Arduino shields and libraries
- Arduino IDE (Windows, macOS, Linux)
- Sensors, motors, displays, relays, and virtually any Arduino module
Tip: You’ll need a USB Type-A to Type-B cable (not included) or a CH340 driver for first-time setup on Windows.