ESP32-C3-WROOM-02N
Overview
ESP32-C3-WROOM-02N is an Espressif ESP32-C3 family wireless module that integrates a Wi-Fi and Bluetooth Low Energy radio with the module PCB and a built-in PCB antenna for simpler board integration. It provides a compact, ready-made RF subassembly to reduce RF design effort and per-unit antenna cost when adding wireless connectivity to a product. The module is intended for embedded IoT endpoints and devices that need Wi-Fi and BLE connectivity but want minimal antenna/hardware design work.
Why Choose This Part
The onboard PCB antenna removes the need to design, source, or tune a separate antenna, reducing PCB layout complexity and per-unit antenna cost. As a fully integrated module it packages the RF front end and MCU together, which shortens time-to-market and reduces validation effort for radio performance. The small module form factor and minimal external component needs make it easy to drop into compact designs.
Applications
Getting Started
Develop with Espressif's ESP-IDF toolchain or the Arduino core for ESP32 for sketches and rapid prototyping. Use Espressif devboards (for example the Espressif C3 devkit series) or a USB-to-UART adapter to flash firmware and view serial output. Consult Espressif module documentation for recommended PCB keepout and antenna placement guidelines.
Dev Boards
Development boards and breakout modules featuring the ESP32-C3-WROOM-02N or compatible chips — ready to use for prototyping.
ESP32-C3 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Memory | Package | Interfaces | Frequency | Sensitivity | Antenna Type | Stock |
|---|---|---|---|---|---|---|---|
| ESP32-C3-WROOM-02N (this part) | — | — | — | — | — | — | 5,124 |
| ESP32-C3-WROOM-02U-N4 | 4MB | SMD-19 | ADC, GPIO, I2C, I2.. | 2.4GHz | -98dBm | Antenna Not Includ.. | 1,055 |
| ESP32-C3-WROOM-02-H4 | 4MB | SMD-32 | GPIO, I2C, I2S, SP.. | 2.4GHz | -105dBm | PCB Trace | 1,489 |
| ESP32-C3-DEVKITC-02U | — | — | — | 2.4GHz | — | — | 123 |
| ESP32-C3-DEVKITM-1-N4X | — | — | — | 2.4GHz | — | — | 934 |
| ESP32-C3-MINI-1 | 4MB | SMD-53 | ADC, GPIO, I2C, I2.. | 2.412GHz | -104dBm | PCB Trace | 3,117 |
| ESP32-C3-MINI-1U | 4MB | SMD-61 | ADC, GPIO, I2C, I2.. | 2.4GHz | -104dBm | Antenna Not Included | 3,117 |
| ESP32-C3-WROOM-02-N4 | 4MB | SMD-19 | GPIO, I2C, I2S, SP.. | 2.4GHz | -105dBm | PCB Trace | 2,289 |
| ESP32-C3-AWS-ExpressLink-DevKit | — | — | — | 2.4GHz | — | — | 2 |
| ESP32-C3-WROOM-02 | 4MB | SMD-19 | GPIO, I2C, I2S, SP.. | 2.4GHz | -105dBm | PCB Trace | 6,393 |
| ESP32-C3-WROOM-02U | 4MB | SMD-19 | ADC, GPIO, I2C, I2.. | 2.4GHz | -98dBm | Antenna Not Includ.. | 6,383 |
| ESP32-C3-LYRA | — | — | — | 2.4GHz | — | PCB Trace Antenna(.. | — |
Also Consider
Espressif Systems
- Same ESP32-C3 module family but with a u.FL antenna connector for use with external antennas or external RF paths.
