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Espressif Systems ESP32-C3-MINI-1U-H4 — RF & Wireless ICs

ESP32-C3-MINI-1U-H4 Espressif Systems RF & Wireless ICs

MPNESP32-C3-MINI-1U-H4
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Espressif Systems ESP32-C3-MINI-1U-H4, Series ESP32-C3, RF & Wireless ICs, 802.11b/g/n + Bluetooth v5.0, 150Mbps, 2.412GHz ~ 2.484GHz, 4MB Flash, 384kB ROM, 408kB SRAM, -40°C~105°C, 20.5dBm TX power, 53-SMD Module

$2.1500Ref. price · indicative, final on quote
Espressif Systems ESP32-C3-MINI-1U-H4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

ESP32-C3-MINI-1U-H4 specifications
ParameterValue
SeriesESP32-C3
Antenna typeAntenna Not Included, I-PEX
MountingSurface Mount
RF familyBluetooth, WiFi
Voltage3V ~ 3.6V
Current - receiving82mA ~ 84mA
Current - transmitting290mA ~ 350mA
Power - output20.5dBm
Frequency2.412GHz ~ 2.484GHz
Protocol802.11b/g/n, Bluetooth v5.0
InterfaceADC, GPIO, I²C, I²S, JTAG, PWM, SPI, UART, USB
Operating temperature-40°C~105°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Data rate150Mbps
Memory size4MB Flash, 384kB ROM, 408kB SRAM
Sensitivity-104dBm
Case53-SMD Module
Utilized IC (Part)ESP32-C3FH4

Product details

The ESP32-C3-MINI-1U-H4 is a surface-mount Wi-Fi + BLE combo module from the ESP32-C3 series, built around the ESP32-C3FH4 chip. It packs 4MB flash, 384kB ROM, and 408kB SRAM. RF covers 2.412 GHz to 2.484 GHz for 802.11b/g/n at up to 150 Mbps, plus Bluetooth v5.0. The module does not include an onboard antenna — it uses an I-PEX connector for an external antenna, which gives you control over the RF path and antenna gain.

Key RF and power ratings

Transmit power is 20.5 dBm. Receive sensitivity is -104 dBm. Current draw during transmit runs 290 mA to 350 mA; receiving pulls 82 mA to 84 mA. Budget the 3.3 V rail for the peak TX current plus margin — a 500 mA LDO is a safe choice.

Serial interfaces and debug access

JTAG is available for debug — no separate debug adapter needed if you bring out the JTAG pins.

The module is surface-mount.

Frequently asked questions

Does ESP32-C3-MINI-1U-H4 include an antenna?

No — the module has an I-PEX connector for an external antenna. You supply the antenna element and cable.

What is the flash memory size of ESP32-C3-MINI-1U-H4?

4 MB flash, plus 384 kB ROM and 408 kB SRAM.