component
ESP32-C3-WROOM-02-H4
Public Made by Adomby adom
Espressif Systems WiFi Modules, ESP32-C3-WROOM-02. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "esp32-c3-wroom-02-h4",
"title": "ESP32-C3-WROOM-02-H4",
"brief": "Espressif Systems WiFi Modules, ESP32-C3-WROOM-02. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"iot-communication modules",
"esp32-c3-wroom-02-h4",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "ESP32-C3-WROOM-02-H4",
"manufacturer": "Espressif Systems",
"package": "ESP32-C3-WROOM-02",
"pin_count": 19,
"category": "IoT/Communication Modules",
"subcategory": "WiFi Modules",
"datasheet": "https://www.espressif.com/sites/default/files/documentation/esp32-c3-wroom-02_datasheet_en.pdf",
"parts": {
"symbol": "esp32-c3-wroom-02-h4.kicad_sym",
"footprint": "esp32-c3-wroom-02-h4.kicad_mod",
"model_3d": "esp32-c3-wroom-02-h4-etched.glb",
"model_3d_plain": "esp32-c3-wroom-02-h4.glb",
"model_3d_step": "esp32-c3-wroom-02-h4-etched.step",
"model_3d_step_plain": "esp32-c3-wroom-02-h4.step",
"lbr": "esp32-c3-wroom-02-h4.lbr"
},
"distributor_links": {
"lcsc": "C2944070",
"digikey": "1965-ESP32-C3-WROOM-02-H4CT-ND",
"mouser": "356-ESP32C3WROOM02H4"
},
"distributor_check": {
"checked_at": "2026-10-28T17:44:39Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "1965-ESP32-C3-WROOM-02-H4CT-ND",
"status": "found"
},
"mouser": {
"pn": "356-ESP32C3WROOM02H4",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "3V3",
"type": "power_in",
"description": "Module power supply input; the extracted pages give no voltage range or current limit for this pin."
},
{
"number": "2",
"name": "EN",
"type": "input",
"description": "Chip enable: high turns the chip on, low powers it off, and the pin must not be left floating."
},
{
"number": "3",
"name": "IO4",
"type": "bidirectional",
"description": "GPIO4 with ADC1_CH4, FSPIHD and MTMS alternate functions; no electrical limits are stated for this pin in the extracted text."
},
{
"number": "4",
"name": "IO5",
"type": "bidirectional",
"description": "GPIO5 with ADC2_CH0, FSPIWP and MTDI alternate functions; no electrical limits are stated for this pin in the extracted text."
},
{
"number": "5",
"name": "IO6",
"type": "bidirectional",
"description": "GPIO6 with FSPICLK and MTCK alternate functions; no electrical limits are stated for this pin in the extracted text."
},
{
"number": "6",
"name": "IO7",
"type": "bidirectional",
"description": "GPIO7 with FSPID and MTDO alternate functions; no electrical limits are stated for this pin in the extracted text."
},
{
"number": "7",
"name": "IO8",
"type": "bidirectional",
"description": "GPIO8, a chip boot-configuration strapping pin that also controls ROM message printing; default state is floating."
},
{
"number": "8",
"name": "IO9",
"type": "bidirectional",
"description": "GPIO9, a chip boot-mode strapping pin with a weak internal pull-up (default logic 1) at reset."
},
{
"number": "9",
"name": "GND",
"type": "power_in",
"description": "Ground pin of the module."
},
{
"number": "10",
"name": "IO10",
"type": "bidirectional",
"description": "GPIO10 with FSPICS0 alternate function; no electrical limits are stated for this pin in the extracted text."
},
{
"number": "11",
"name": "RXD",
"type": "bidirectional",
"description": "GPIO20 multiplexed as UART0 receive (U0RXD), used for firmware download and log output."
},
{
"number": "12",
"name": "TXD",
"type": "bidirectional",
"description": "GPIO21 multiplexed as UART0 transmit (U0TXD), used for firmware download and log output."
},
{
"number": "13",
"name": "IO18",
"type": "bidirectional",
"description": "GPIO18 multiplexed with the USB D- signal of the USB Serial/JTAG controller."
},
{
"number": "14",
"name": "IO19",
"type": "bidirectional",
"description": "GPIO19 multiplexed with the USB D+ signal of the USB Serial/JTAG controller."
},
{
"number": "15",
"name": "IO3",
"type": "bidirectional",
"description": "GPIO3 with ADC1_CH3 alternate function; no electrical limits are stated for this pin in the extracted text."
},
{
"number": "16",
"name": "IO2",
"type": "bidirectional",
"description": "GPIO2 with ADC1_CH2 and FSPIQ alternate functions; it is a chip boot-mode strapping pin and is floating by default."
},
{
"number": "17",
"name": "IO1",
"type": "bidirectional",
"description": "GPIO1 with ADC1_CH1 and XTAL_32K_N alternate functions; no electrical limits are stated for this pin in the extracted text."
},
{
"number": "18",
"name": "IO0",
"type": "bidirectional",
"description": "GPIO0 with ADC1_CH0 and XTAL_32K_P alternate functions; no electrical limits are stated for this pin in the extracted text."
},
{
"number": "19",
"name": "GND",
"type": "power_in",
"description": "Ground pin (also the exposed pad, EPAD); soldering it to the base-board ground is optional but improves thermal performance."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The -H4 part number is not in the extracted text for the ANT (WROOM-02) series. Table 1-1 (page 3) i; The datasheet gives no voltage range, current limit or electrical characteristics for individual pin; Pin 19 is listed as GND in Table 3-1 and as EPAD in the schematic (page 34). It is marked GND here w"
],
"pages_sent": 22,
"cost_usd": 0.0556,
"at": "2026-10-28T17:43:18"
},
"datasheet": {
"url": "https://www.espressif.com/sites/default/files/documentation/esp32-c3-wroom-02_datasheet_en.pdf",
"pages": 47,
"sha256": "2375b1be75ebbfcf",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 19,
"described": 19,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "esp32-c3-wroom-02-h4.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
18,
20,
3.199
],
"zmin_mm": 0,
"centre_offset_mm": 3.1,
"footprint_binding": "identity",
"sha256": "8a5a42518e62d24d480edd63e02aa959803ad7a44cb43953e65d171fd2f2dd83",
"checked": "2026-10-28",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "esp32-c3-wroom-02-h4-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
18,
20,
3.199
],
"zmin_mm": 0,
"centre_offset_mm": 3.1,
"footprint_binding": "identity",
"sha256": "367f03b7c254606a031277b3abd1ad05cf1d0b94b4d97daf7d4e15a30b55be06",
"checked": "2026-10-28",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Espressif Systems",
"Package": "ESP32-C3-WROOM-02",
"Category": "IoT/Communication Modules",
"Pins": "19"
},
"appearance": {
"contacts": {
"quote": "Solder: Sn-Ag-Cu (SAC305) lead-free solder Temperature (°C)",
"page": 40,
"doc": "ds.pdf",
"plating": "tin"
},
"version": 1,
"datasheet_sha256": "2375b1be75ebbfcffa050e6a26c3ee7957bc7171b319066081a491d1b2e21161"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "2375b1be75ebbfcffa050e6a26c3ee7957bc7171b319066081a491d1b2e21161",
"rows": [
{
"name": "Power supply voltage",
"symbol": "VDD33",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 3.6,
"conditions": "",
"source_page": 22,
"source": "datasheet"
},
{
"name": "Storage temperature",
"symbol": "TSTORE",
"kind": "absolute_maximum",
"unit": "°C",
"min": -40,
"typ": null,
"max": 105,
"conditions": "",
"source_page": 22,
"source": "datasheet"
},
{
"name": "Power supply voltage",
"symbol": "VDD33",
"kind": "recommended_operating",
"unit": "V",
"min": 3,
"typ": 3.3,
"max": 3.6,
"conditions": "",
"source_page": 22,
"source": "datasheet"
},
{
"name": "Current delivered by external power supply",
"symbol": "IVDD",
"kind": "recommended_operating",
"unit": "A",
"min": 0.5,
"typ": null,
"max": null,
"conditions": "",
"source_page": 22,
"source": "datasheet"
},
{
"name": "Operating ambient temperature",
"symbol": "TA",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 105,
"conditions": "105 °C version",
"source_page": 22,
"source": "datasheet"
},
{
"name": "High-level input current",
"symbol": "IIH",
"kind": "electrical",
"unit": "nA",
"min": null,
"typ": null,
"max": 50,
"conditions": "",
"source_page": 22,
"source": "datasheet"
},
{
"name": "Low-level input current",
"symbol": "IIL",
"kind": "electrical",
"unit": "nA",
"min": null,
"typ": null,
"max": 50,
"conditions": "",
"source_page": 22,
"source": "datasheet"
},
{
"name": "Pin capacitance",
"symbol": "CIN",
"kind": "electrical",
"unit": "pF",
"min": null,
"typ": 2,
"max": null,
"conditions": "",
"source_page": 22,
"source": "datasheet"
},
{
"name": "High-level source current",
"symbol": "IOH",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 40,
"max": null,
"conditions": "VDD1 = 3.3 V, VOH >= 2.64 V, PAD_DRIVER = 3",
"source_page": 22,
"source": "datasheet"
},
{
"name": "Low-level sink current",
"symbol": "IOL",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 28,
"max": null,
"conditions": "VDD1 = 3.3 V, VOL = 0.495 V, PAD_DRIVER = 3",
"source_page": 22,
"source": "datasheet"
},
{
"name": "Internal weak pull-up resistor",
"symbol": "RPU",
"kind": "electrical",
"unit": "kΩ",
"min": null,
"typ": 45,
"max": null,
"conditions": "",
"source_page": 22,
"source": "datasheet"
},
{
"name": "Internal weak pull-down resistor",
"symbol": "RPD",
"kind": "electrical",
"unit": "kΩ",
"min": null,
"typ": 45,
"max": null,
"conditions": "",
"source_page": 22,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
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"discovery_triggers": [
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],
"discovery_pitch": "ESP32-C3-WROOM-02-H4 (Espressif Systems) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
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