When you look at part numbers for ESP32-WROOM-32D WiFi-BT-BLE MCU modules from Espressif, each of them bears slightly different features such as external SPI flash. Each ESP32-WROOM-32D part number’s ordering information is given below.
| MPN | Flash Size | Antenna Type | Operating Temperature | Dimension (mm) | |
| ESP32-WROOM-32D | 4 MB | Internal PCB onboard antenna | –40°C ~ +85°C | 18.00×25.5x3.10 | |
| ESP32-WROOM-32D(8 MB) | 8 MB | Internal PCB onboard antenna | –40°C ~ +85°C | 18.00×25.50×3.10 | |
| ESP32-WROOM-32D(16 MB) | 16 MB | Internal PCB onboard antenna | –40°C ~ +85°C | 18.00×25.50×3.10 | |
| ESP32-WROOM-32D(M113DH3200PS3Q0) | 4 MB | Internal PCB onboard antenna | –40°C ~ +105°C | 18.00×25.50x3.10 |
To learn more ESP32-WROOM-32D, please check its datasheet
