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Arduino UNO SMD compatible Board(Pack of 25)

Arduino UNO SMD compatible Board(Pack of 25)

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  • This UNO SMD Board is compatible with Arduino( Pack of 25)
  • Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software
  • The Uno R3 SMD is an Uno compatible version of the latest R3 iteration of the Arduino Uno, which is the most popular of the many development boards available for hobbyists
  • Arduino can sense the environment by receiving input from a variety of sensors and can affect its surroundings by controlling lights, motors, and other actuators
  • This board uses an SMD version of the microprocessor rather than the older style DIP package used on the original product and has some additional features

UNO SMD Board compatible with Arduino

The Uno SMD board is based on the ATmega328. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with an AC-to-DC adapter or battery to get started.

The Uno SMD development board comes with a CH340G USB to UART converter chip. So in order to use this board, we need to install the CH340 driver. It can be powered via a USB connection or with an external power supply. The power source is selected automatically. 

The AC-DC adapter can be connected by plugging a 2.1mm center-positive plug into the board's power jack. Leads from a battery can be inserted in the Gnd and Vin pin headers of the POWER connector. The board can operate on an external supply of 6 to 20 volts. If supplied with less than 7V, however, the 5V pin may supply less than five volts and the board may be unstable. If using more than 12V, the voltage regulator may overheat and damage the board. The recommended range is 7 to 12 volts.

If you want to use this UNO SMD Board compatible with Arduino in your small or DIY projects, for that you will need few essential components like

Comparison of Uno Boards:


UNO Wifi



Microcontroller ATmega4809 ATmega328P (SMD) ATmega328P (Through hole)
USB connector Micro-USB USB-B USB-B
Digital I/O Pins 14 14 14
Analog input pins 6 6 6
PWM pins 5 6 6
UART Yes Yes Yes
I2C Yes Yes Yes
SPI Yes Yes Yes
I/O Voltage 5V 5V 5V
Input voltage (nominal) 7-12V 7-12V 7-12V
DC Current per I/O Pin 20mA 20 mA 20 mA
Power Supply Connector Barrel Plug Barrel Plug Barrel Plug
clock speed 16 MHz 16 MHz 16 MHz
USB-Serial chip ATmega16U2 CH340 ATmega16U2
SRAM 6.144KB 2KB 2KB
Flash Memory 48KB 32KB 32KB
EEPROM 256 Bytes 1KB 1KB
Dimensions 68.6 mm x 53.4 mm 68.6 mm x 53.4 mm 68.6 mm x 53.4 mm
RADIO MODULE u-blox NINA-W102 - -
Inertial Measurement Unit LSM6DS3TR (3D accelerometer) - -
LED_BUILTIN 25 13 13
Wi-Fi Microprocessor Yes - -


  • Arduino Music Instrument
  • Robot Car
  • Fingerprint door lock
  • Home Automation
  • Security systems

Package Includes:


Microcontroller  ATmega328
Digital I/O Pins 14
Analog Inputs  6
Crystal Oscillator Frequency  16MHz
Operating Voltage  6-20V
Dimensions  7 x 5 x 1cms
Weight  10 grams

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  • Return window: 7 days from receipt unless stated
    otherwise. No refunds/replacements after
  • Returns only for non-working/damaged products are accepted
  • Initiate return requests to our customer service team via Support ticket or contact us at +91-8123057137
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1. What is the difference between Uno and Uno SMD? 

In the UNO SMD (Surface Mounted Device) the microprocessor chip (ATmega328) is integrated and soldered onto the board; whereas the ATmega328 is DIP in the standard UNO (Dual In-line Packaged), which means that the microprocessor chip can easily be removed and replace if necessary. 

2. Why is Uno SMD better?

The Uno board is primarily used by beginners who can use it in electronics projects and for programming.  The Uno SMD is  extremely user-friendly while allowing for exceptional connectivity.

3. Where can we use the UNO SMD Board? 

The Uno is an open-source microcontroller board based on the Microchip ATmega328P microcontroller and is commonly used in Robot cars, Fingerprint door locks, Home Automation, and Security systems. 

4. What chip does Uno SMD use? 

The Uno is an open-source microcontroller board based on the Microchip ATmega328P microcontroller. The board is equipped with sets of digital and analog input/output (I/O) pins that may be interfaced with various expansion boards (shields) and other circuits. 

5. Does Uno SMD have ATmega328? 

Uno SMD is a microcontroller board based on the ATmega328P.It has 14 digital input/output pins, 6 analog inputs, a 16 MHz ceramic resonator (CSTCE16M0V53-R0), a USB connection, a power jack, an ICSP header, and a reset button.