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ESP32-C3-WROOM-02-H4

ESP32-C3-WROOM-02-H4

Espressif Systems
Multiprotocol Modules SMD module, ESP32-C3, 4MB SPI flash, PCB antenna, -40 C +105 C
6,302 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The ESP32-C3-WROOM-02-H4 is a compact, single-core RISC-V Wi-Fi and Bluetooth 5 (LE) module designed for secure and low-power IoT applications. It operates at up to 160MHz and is rated for an extended temperature range of -40 C to +105 C, making it suitable for industrial environments. The module features 4MB of integrated SPI flash and a PCB trace antenna for simplified RF design.

Why Choose This Part

This module provides a cost-effective transition from ESP8266 to a more modern RISC-V architecture with enhanced security and Bluetooth 5 (LE) support. Its low power consumption, reaching as low as 5uA in standby, is ideal for battery-operated devices requiring occasional wireless connectivity.

Applications

Smart Lighting
Utilize the built-in PWM and Bluetooth Mesh capabilities to create robust, interconnected lighting systems.
Industrial Sensor Nodes
The high temperature rating and 12-bit ADC allow for reliable data collection in harsh factory environments.
Secure IoT Gateways
Leverage the RISC-V architecture and internal security features for safe data transmission to the cloud.

Key Specifications

Protocol 802.11b/g/n, Bluetooth v5.0
Data Rate 150Mbps
Frequency 2.4GHz
Memory Size 4MB Flash, 400kB SRAM, 384kB ROM
Sensitivity -105dBm
Antenna Type PCB Trace
Mounting Type Surface Mount
Package / Case 32-SMD Module
Power - Output 20.5dBm
Voltage - Supply 3V ~ 3.6V
Serial Interfaces GPIO, I2C, I2S, SPI, JTAG, UART, USB
RF Family/Standard Bluetooth, WiFi
Utilized IC / Part ESP32-C3
Current - Receiving 82mA ~ 84mA
Operating Temperature -40degC ~ 105degC (TA)
Current - Transmitting 280mA ~ 345mA

Getting Started

Engineers can develop for this module using the Espressif IoT Development Framework (ESP-IDF) or the Arduino IDE. The ESP32-C3-DevKitM-1 is the recommended hardware platform for rapid prototyping and debugging via the integrated USB-to-Serial bridge.

Dev Boards

Development boards and breakout modules featuring the ESP32-C3-WROOM-02-H4 or compatible chips — ready to use for prototyping.

ESP32-C3-DEVKITC-02U Espressif Systems
The ESP32-C3-DEVKITC-02U transceiver evaluation board by Espressif Systems is a development tool designed for RF, RFID,
Digi-Key 123 in stock
ESP32-C3 ESP32-C Bluetooth® 5.x (BLE) Transceiver 2.4GHz Evaluation Board
Digi-Key 108 in stock
ESP32-C3-DEVKITM-1-N4X Espressif Systems
Multiprotocol Development Tools ESP32-C3-DevKitM-1 is an entry-level development board equipped with ESP32-C3-MINI-1 or
Digi-Key Mouser 934 in stock
ESP32-C3-DevKitM-1 Espressif
Lower-cost Espressif dev kit with BLE and Wi-Fi capabilities if Wi-Fi 6 or 802.15.4 are not required.
Digi-Key 213 in stock
Development Boards & Kits - Wireless The ESP32-C3-AWS-ExpressLink-DevKit is a development board that hosts Espressif s A
Mouser 72 in stock

ESP32-C3-WROOM Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Memory Sensitivity Antenna Type Package Interfaces Temp Range Stock
ESP32-C3-WROOM-02-H4 (this part) 4MB -105dBm PCB Trace SMD-32 GPIO, I2C, I2S, SP.. -40degC ~ 105degC .. 6,302
ESP32-C3-WROOM-02U-N4 4MB -98dBm Antenna Not Includ.. SMD-19 ADC, GPIO, I2C, I2.. -40degC ~ 105degC .. 5,741
ESP32-C3-WROOM-02-N4 4MB -105dBm PCB Trace SMD-19 GPIO, I2C, I2S, SP.. -40degC ~ 85degC (.. 2,289
ESP32-C3-WROOM-02 4MB -105dBm PCB Trace SMD-19 GPIO, I2C, I2S, SP.. -40degC ~ 85degC (.. 6,393
ESP32-C3-WROOM-02U 4MB -98dBm Antenna Not Includ.. SMD-19 ADC, GPIO, I2C, I2.. -40degC ~ 105degC .. 6,383
Also available as: ESP32-C3-WROOM-02N

Also Consider

ESP32-S3-WROOM-1-N8 Espressif Systems - Provides a dual-core Xtensa processor and AI acceleration for more demanding edge computing tasks.
nRF52840 nRFNordic Semiconductor - Higher power efficiency for pure Bluetooth Low Energy and Thread applications without Wi-Fi requirements.
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