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ESP32-C3-WROOM-02-N4

ESP32-C3-WROOM-02-N4 – Espressif Systems RF Module

MPNESP32-C3-WROOM-02-N4
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Espressif Systems ESP32 series, ESP32-C3-WROOM-02-N4 module, 2.4GHz 802.11b/g/n + Bluetooth v5.0, 150Mbps data rate, 4MB flash, 400kB SRAM, 384kB ROM, PCB trace antenna, 19-SMD module, -40°C to 85°C operating range.

$1.9000Ref. price · indicative, final on quote
Espressif Systems ESP32-C3-WROOM-02-N4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

ESP32-C3-WROOM-02-N4 specifications
ParameterValue
SeriesESP32
Antenna typePCB Trace
MountingSurface Mount
RF familyBluetooth, WiFi
Supply voltage3V ~ 3.6V
Current - receiving82mA ~ 84mA
Current - transmitting280mA ~ 345mA
Power - output20.5dBm
Frequency2.4GHz
Protocol802.11b/g/n, Bluetooth v5.0
Serial interfacesGPIO, I²C, I²S, SPI, JTAG, UART, USB
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR) Cut Tape (CT)
Data rate150Mbps
Memory size4MB Flash, 400kB SRAM, 384kB ROM
Sensitivity-105dBm
Case19-SMD Module
Utilized IC (Part)ESP32-C3

Product details

Module identity and wireless capability

The ESP32-C3-WROOM-02-N4 is an Espressif Systems surface-mount module built around the ESP32-C3 chip. It integrates a 2.4GHz radio supporting 802.11b/g/n Wi-Fi and Bluetooth v5.0, with a rated data rate of 150Mbps.

Memory resources and application headroom

With 4MB flash, 400kB SRAM, and 384kB ROM, the module supports complex application code and data buffering typical of IoT edge nodes, sensor hubs, and BLE gateways.

Environmental and supply voltage tolerance

The supply voltage range of 3V to 3.6V aligns with standard 3.3V rails, simplifying power design.

Interface and debug connectivity

Serial interfaces include GPIO, I²C, I²S, SPI, JTAG, UART, and USB, covering sensor readout, display driving, and debug access without external bridge chips.

Transmit power and receive sensitivity

The module delivers 20.5dBm transmit power and -105dBm receive sensitivity, providing a solid link budget for range extension in obstructed environments.

Frequently asked questions

Does ESP32-C3-WROOM-02-N4 support Bluetooth 5.0?

Yes, the module supports Bluetooth v5.0 alongside 802.11b/g/n Wi-Fi.

What is the difference between ESP32-C3-WROOM-02 and ESP32-C3-WROOM-02-N4?

The -N4 suffix indicates the module variant with 4MB flash memory. The base ESP32-C3-WROOM-02 typically ships with 4MB flash as well, but the -N4 designation is used by Espressif to denote the specific flash density. Confirm the exact flash size from the module marking for your BOM.