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ESP32-C3-WROOM-02-N4 Module, 18.0 x 20.0 x 3.2 mm packageRepresentative package image. See datasheet for exact dimensions.

ESP32-C3-WROOM-02-N4

by Espressif Systems

2.4 GHz Wi-Fi 4 and Bluetooth 5 (LE) module, ESP32-C3 RISC-V, 4 MB flash, PCB antenna

ManufacturerEspressif Systems
CategoryRF & Wireless Modules
SeriesESP32-C3-WROOM-02
PackageModule, 18.0 x 20.0 x 3.2 mm
DatasheetESP32-C3-WROOM-02-N4 PDF
Availability
ESP32-C3-WROOM-02-N4 Datasheet PDFAll specifications

Other Espressif Wi-Fi parts on this site: ESP32-WROOM-32E (2.4 GHz Wi-Fi + Bluetooth/BLE module) · ESP32-S3-WROOM-1 (2.4 GHz Wi-Fi + Bluetooth 5 (LE) module) · ESP8266EX (Highly integrated 2.4 GHz Wi-Fi SoC with Tensilica L106 32-bit CPU)

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ESP32-C3-WROOM-02-N4 Overview

ESP32-C3-WROOM-02-N4 is the 4 MB-flash, 85 °C version of Espressif's ESP32-C3-WROOM-02 module: an ESP32-C3 RISC-V single-core SoC (up to 160 MHz) with 2.4 GHz Wi-Fi (802.11b/g/n) and Bluetooth LE 5, on-board PCB antenna and 15 GPIOs in an 18.0 x 20.0 x 3.2 mm package. The same datasheet (v1.7, March 2026) lists the -H4 variant (105 °C) and the -N8 variant (8 MB flash), plus the -02U series with an external antenna connector. It runs from 3.0 V to 3.6 V.

Key Features

  • ESP32-C3 32-bit RISC-V single-core processor, up to 160 MHz, 400 kB SRAM, 384 kB ROM
  • IEEE 802.11b/g/n Wi-Fi and Bluetooth LE 5 (including mesh)
  • 4 MB Quad SPI flash; on-board PCB antenna
  • SPI, UART, I2C, I2S, USB Serial/JTAG, TWAI (ISO 11898-1) and LED PWM
  • 3.0 V to 3.6 V supply, -40 °C to 85 °C

Applications

  • Smart home
  • Industrial automation
  • Health care and consumer electronics

ESP32-C3-WROOM-02-N4 Specifications

Part NumberESP32-C3-WROOM-02-N4
ManufacturerEspressif Systems
CategoryRF & Wireless Modules
SeriesESP32-C3-WROOM-02
Package / CaseModule, 18.0 x 20.0 x 3.2 mm
SoCESP32-C3, 32-bit RISC-V single core, up to 160 MHz
WirelessIEEE 802.11b/g/n, Bluetooth LE 5
Flash4 MB (Quad SPI)
SRAM400 kB (16 kB cache)
GPIOUp to 15
Supply voltage3.0 V to 3.6 V
Operating temperature-40 °C to 85 °C

Specifications are taken from the manufacturer's public datasheet and are for reference. Confirm against the latest datasheet before design-in.

ESP32-C3-WROOM-02-N4 Pinout & Package

ESP32-C3-WROOM-02-N4 is supplied in a Module, 18.0 x 20.0 x 3.2 mm package. The full pin configuration, pin descriptions and mechanical drawing are published in the Espressif Systems datasheet (open ESP32-C3-WROOM-02-N4 datasheet PDF). Always check the footprint against the latest datasheet revision before layout.

ESP32-C3-WROOM-02-N4 Alternatives & Equivalents

Part NumberManufacturerCompatibilityRFQ
ESP32-C3-WROOM-02-H4Espressif Systemssame module with 4 MB flash rated -40 °C to 105 °C
ESP32-C3-WROOM-02-N8Espressif Systemssame module with 8 MB flash, -40 °C to 85 °C
ESP32-C3-WROOM-02U-N4Espressif Systemsexternal antenna connector version, 18.0 x 14.3 x 3.2 mm

Alternatives are for reference. Verify pinout, electrical characteristics and firmware against each datasheet before substituting.

ESP32-C3-WROOM-02-N4 FAQ

Who manufactures ESP32-C3-WROOM-02-N4?

ESP32-C3-WROOM-02-N4 is manufactured by Espressif Systems and belongs to the ESP32-C3-WROOM-02 series. It is listed under RF & Wireless Modules.

What is ESP32-C3-WROOM-02-N4?

ESP32-C3-WROOM-02-N4: 2.4 GHz Wi-Fi 4 and Bluetooth 5 (LE) module, ESP32-C3 RISC-V, 4 MB flash, PCB antenna.

What package does ESP32-C3-WROOM-02-N4 come in?

ESP32-C3-WROOM-02-N4 comes in a Module, 18.0 x 20.0 x 3.2 mm package.

Where can I download the ESP32-C3-WROOM-02-N4 datasheet and pinout?

The Espressif Systems datasheet for ESP32-C3-WROOM-02-N4 is linked in the Datasheet section of this page (https://www.espressif.com/sites/default/files/documentation/esp32-c3-wroom-02_datasheet_en.pdf). The pin configuration and package drawing are in that datasheet.

What is the equivalent or alternative to ESP32-C3-WROOM-02-N4?

Documented alternatives to ESP32-C3-WROOM-02-N4: ESP32-C3-WROOM-02-H4 (Espressif Systems, same module with 4 MB flash rated -40 °C to 105 °C); ESP32-C3-WROOM-02-N8 (Espressif Systems, same module with 8 MB flash, -40 °C to 85 °C); ESP32-C3-WROOM-02U-N4 (Espressif Systems, external antenna connector version, 18.0 x 14.3 x 3.2 mm). Always verify pinout and electrical characteristics against each datasheet before substituting.

Do you have ESP32-C3-WROOM-02-N4 in stock?

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How do I get a price and availability for ESP32-C3-WROOM-02-N4?

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