The XIAO ESP32S3 is a high-performance board powered by an Expressif ESP32-S3R8 chip. With support for 2.4GHz WiFi and low-power Bluetooth® BLE 5.0 dual-mode wireless communication, this board is perfect for high-performance, low-power IoT applications.
When connected with the U.FL antenna, the remote communication distance can reach up to 100m.
Equipped with a powerful Xtensa® 32-bit LX7 dual-core processor running at up to 240MHz, 8MB PSRAM, and 8MB Flash, the XIAO ESP32S3 is designed to handle multi-demanding tasks with ease.
Additionally, the XIAO ESP32S3 supports lithium battery charging management and allows for deep sleep mode with power consumption as low as 14μA. With 4 adjustable power modes, the XIAO ESP32S3 can balance communication distance, data rate, and power consumption to meet the needs of various application scenarios.
At just 21 x 17.5mm, the XIAO ESP32S3 is designed with the classic thumb-sized form factor, making it perfect for wearable devices. Its breadboard-friendly and surface-mount design make it ideal for production.
Now available with loose headers or pre-soldered -select an option before adding to your cart.
Features
- Powerful MCU Board: Incorporate the ESP32S3 32-bit, dual-core, Xtensa processor running at up to 240MHz, mounted multiple development ports, Arduino / MicroPython supported
- Outstanding RF performance: Supports 2.4GHz WiFi and BLE 5.0 dual wireless communication, supports 100m+ remote communication when connected with U.FL antenna
- Elaborate Power Design: Lithium battery charge management capability, offer 4 power consumption model which allows for deep sleep mode with power consumption as low as 14μA
- Thumb-sized Compact Design: 21 x 17.5mm, adopting the classic form factor of XIAO, suitable for space-limited projects like wearable devices
- Perfect for Production: Breadboard-friendly & SMD design, no components on the back
- Product number:
- Loose headers: Seeed 113991114
- Pre-soldered: Seeed 102010634
Specifications
| Processor | ESP32-S3R8 |
| Xtensa LX7 dual-core, 32-bit processor running up to 240 MHz | |
| Wireless | Complete 2.4GHz WiFi subsystem |
| BLE: Bluetooth 5.0, Bluetooth mesh | |
| On-chip Memory | 8M PSRAM & 8MB Flash |
| Interface | 1x UART, 1x IIC, 1x IIS, 1x SPI,11x GPIO(PWM), 9x ADC, 1x User LED, 1x Charge LED |
| 1x Reset button, 1x Boot button | |
| Dimensions | 21 x 17.5mm |
| Power | Input voltage (Type-C): 5V |
| Input voltage (BAT): 4.2V | |
| Circuit operating Voltage (ready to operate): | |
| – Type-C: 5V@19mA | |
| – BAT: 3.8V@22mA | |
| Charging battery current: 50mA | |
| Low Power Consumption Model | Modem-sleep Model: ~ 25 mA |
| (Supply Power: 3.8V) | Light-sleep Model: ~ 2mA |
| Deep Sleep Model: ~ 14 μA | |
| WiFi Enabled Power Consumption | Active Model: ~ 100 mA |
| BLE Enabled Power Consumption | Active Model: ~ 85 mA |
| Working Temperature | -40°C ~ 65°C |
Resources
- Product Wiki
- ESP32-S3 Datasheet
Pinout

Package Contents
- 1x XIAO ESP32S3 (select header variant before adding to cart)
- 1x Antenna
- 1x Loose Header Set (unsoldered version only)


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