ESP32-C3-WROOM-02-N4
RF Transceiver Modules and Modems
Technical Specifications
| Type | Description |
|---|---|
| Working Voltage V | 3.3 V |
| Interface | I2C;I2S;SPI;JTAG;UART;USB |
| Frequency Range | 2.4GHz |
| Utilized IC / Part | ESP32-C3 Chip |
| Output Power | 20.5dBm |
| Antenna Type | On-board PCB Antenna |
| Sensitivity | -105dBm |
| Type | Description |
|---|---|
| Wireless Standard | Bluetooth5.0 |
| Receive Current | 82mA |
| Current Of Transmitting | 345mA |
| Features | Integrated Bluetooth function;Support USB interface |
| Operating Temp | -40°C ~ +85°C |
| Package / Case | SMD,20x18mm |
Product Introduction
2.4GHz ESP32-C3 Chip On-board PCB Antenna -105dBm SMD,20x18mm RF Transceiver Modules and Modems RoHS
Datasheet
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS |
| ECCN | 5A992C |
| CNHTS | 8517629200 |
| USHTS | 8517620090 |
| TARIC | 8517620000 |
| Type | Details |
|---|---|
| CAHTS | 8517620090 |
| BRHTS | 85176299 |
| INHTS | 85176290 |
| MXHTS | 8517.62.99 |
Frequently Asked Questions
Does the ESP32-C3-WROOM-02-N4 Use an Onboard Antenna or Require an External Antenna, and What Receive Sensitivity Does It Achieve?
The ESP32-C3-WROOM-02-N4 incorporates an on-board PCB antenna, eliminating the need for an external antenna in most designs. The module achieves a receive sensitivity of -105dBm at 2.4GHz, enabling reliable communication in typical wireless IoT deployments. The integrated antenna is designed for omni-directional coverage and is tuned for the 2.4GHz ISM band supporting both Wi-Fi 802.11b/g/n and Bluetooth 5 LE operation.
How Much Flash Memory Does the N4 Variant of the ESP32-C3-WROOM-02 Contain, and What Does the Naming Suffix Indicate?
The N4 in the part number ESP32-C3-WROOM-02-N4 designates 4MB of embedded SPI flash memory. This naming convention is standard across Espressif WROOM modules: N indicates flash (SPI NOR), and the numeral indicates megabytes. The ESP32-C3 SoC itself contains no external PSRAM in this variant. For applications requiring more onboard storage, alternate variants with larger flash are available in the ESP32-C3-WROOM-02 family.
What Wireless Protocols and RF Performance Does the ESP32-C3-WROOM-02-N4 Support?
The ESP32-C3-WROOM-02-N4 is a 2.4GHz Wi-Fi and Bluetooth module based on the ESP32-C3 chip. It supports IEEE 802.11b/g/n Wi-Fi and Bluetooth 5 (LE). The module integrates an on-board PCB antenna and achieves a receive sensitivity of -105dBm. The package is VFQFN-32-EP, and the module is RoHS compliant. This combination of Wi-Fi and BLE in a compact form factor suits IoT, industrial, and consumer wireless applications.
Sourcing Information
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