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Ray Set visibility: public 2406e52 7d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "esp32-c3-mini-1u-h4",
  "title": "ESP32-C3-MINI-1U-H4",
  "brief": "Espressif Systems WiFi Modules, ESP32-C3-MINI-1U. 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-mini-1u-h4",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ESP32-C3-MINI-1U-H4",
    "manufacturer": "Espressif Systems",
    "package": "ESP32-C3-MINI-1U",
    "pin_count": 53,
    "category": "IoT/Communication Modules",
    "subcategory": "WiFi Modules",
    "datasheet": "https://www.espressif.com/sites/default/files/documentation/esp32-c3-mini-1_datasheet_en.pdf",
    "parts": {
      "symbol": "esp32-c3-mini-1u-h4.kicad_sym",
      "footprint": "esp32-c3-mini-1u-h4.kicad_mod",
      "model_3d": "esp32-c3-mini-1u-h4-hero.glb",
      "model_3d_plain": "esp32-c3-mini-1u-h4-etched.glb",
      "model_3d_step": "esp32-c3-mini-1u-h4-etched.step",
      "model_3d_step_plain": "esp32-c3-mini-1u-h4.step",
      "lbr": "esp32-c3-mini-1u-h4.lbr"
    },
    "distributor_links": {
      "lcsc": "C3013922",
      "digikey": "1965-ESP32-C3-MINI-1U-H4TR-ND",
      "mouser": "356-ESP32-C3MINI1UH4"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T17:21:12Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "1965-ESP32-C3-MINI-1U-H4TR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "356-ESP32-C3MINI1UH4",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "3",
        "name": "3V3",
        "type": "power_in",
        "description": "Power supply input; Table 6-2 gives VDD33 as 3.0 V min, 3.3 V typ, 3.6 V max."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; the datasheet lists this pin as NC with no function."
      },
      {
        "number": "5",
        "name": "IO2",
        "type": "bidirectional",
        "description": "GPIO2 with ADC1_CH2 and FSPIQ functions; also a chip boot mode strapping pin, and the pin is floating by default."
      },
      {
        "number": "6",
        "name": "IO3",
        "type": "bidirectional",
        "description": "GPIO3 with ADC1_CH3 function."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; the datasheet lists this pin as NC with no function."
      },
      {
        "number": "8",
        "name": "EN",
        "type": "input",
        "description": "Chip enable: High turns the chip on, Low turns it off; do not leave the EN pin floating."
      },
      {
        "number": "9",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; the datasheet lists this pin as NC with no function."
      },
      {
        "number": "10",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; the datasheet lists this pin as NC with no function."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "12",
        "name": "IO0",
        "type": "bidirectional",
        "description": "GPIO0 with ADC1_CH0 and XTAL_32K_P functions."
      },
      {
        "number": "13",
        "name": "IO1",
        "type": "bidirectional",
        "description": "GPIO1 with ADC1_CH1 and XTAL_32K_N functions."
      },
      {
        "number": "14",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "15",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; the datasheet lists this pin as NC with no function."
      },
      {
        "number": "16",
        "name": "IO10",
        "type": "bidirectional",
        "description": "GPIO10 with FSPICS0 function."
      },
      {
        "number": "17",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; the datasheet lists this pin as NC with no function."
      },
      {
        "number": "18",
        "name": "IO4",
        "type": "bidirectional",
        "description": "GPIO4 with ADC1_CH4, FSPIHD and MTMS functions."
      },
      {
        "number": "19",
        "name": "IO5",
        "type": "bidirectional",
        "description": "GPIO5 with ADC2_CH0, FSPIWP and MTDI functions."
      },
      {
        "number": "20",
        "name": "IO6",
        "type": "bidirectional",
        "description": "GPIO6 with FSPICLK and MTCK functions."
      },
      {
        "number": "21",
        "name": "IO7",
        "type": "bidirectional",
        "description": "GPIO7 with FSPID and MTDO functions."
      },
      {
        "number": "22",
        "name": "IO8",
        "type": "bidirectional",
        "description": "GPIO8 general-purpose I/O; also a chip boot mode and ROM message printing strapping pin."
      },
      {
        "number": "23",
        "name": "IO9",
        "type": "bidirectional",
        "description": "GPIO9 general-purpose I/O; also a chip boot mode strapping pin with a weak pull-up by default."
      },
      {
        "number": "24",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; the datasheet lists this pin as NC with no function."
      },
      {
        "number": "25",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; the datasheet lists this pin as NC with no function."
      },
      {
        "number": "26",
        "name": "IO18",
        "type": "bidirectional",
        "description": "GPIO18 with USB_D- function."
      },
      {
        "number": "27",
        "name": "IO19",
        "type": "bidirectional",
        "description": "GPIO19 with USB_D+ function."
      },
      {
        "number": "28",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; the datasheet lists this pin as NC with no function."
      },
      {
        "number": "29",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; the datasheet lists this pin as NC with no function."
      },
      {
        "number": "30",
        "name": "RXD0",
        "type": "bidirectional",
        "description": "GPIO20 with U0RXD function (UART0 receive)."
      },
      {
        "number": "31",
        "name": "TXD0",
        "type": "bidirectional",
        "description": "GPIO21 with U0TXD function (UART0 transmit)."
      },
      {
        "number": "32",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; the datasheet lists this pin as NC with no function."
      },
      {
        "number": "33",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; the datasheet lists this pin as NC with no function."
      },
      {
        "number": "34",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; the datasheet lists this pin as NC with no function."
      },
      {
        "number": "35",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; the datasheet lists this pin as NC with no function."
      },
      {
        "number": "36",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "37",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "38",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "39",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "40",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "41",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "42",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "43",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "44",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "45",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "46",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "47",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "48",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "49",
        "name": "GND",
        "type": "power_in",
        "description": "Ground exposed thermal pad (EPAD); soldering it to base-board ground is optional and improves thermal performance if the correct amount of solder paste is used."
      },
      {
        "number": "50",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "51",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "52",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      },
      {
        "number": "53",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the module."
      }
    ],
    "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 datasheet covers ESP32-C3-MINI-1 and ESP32-C3-MINI-1U and does not publish a separate pinout for; Table 1-2 lists the 13.2 × 12.5 × 2.4 mm size only on the ESP32-C3-MINI-1U-H4X row; the -H4 row show; Table 1-2 marks ESP32-C3-MINI-1U-H4 as NRND (not recommended for new designs)."
        ],
        "pages_sent": 23,
        "cost_usd": 0.1066,
        "at": "2026-10-28T17:20:41"
      },
      "datasheet": {
        "url": "https://www.espressif.com/sites/default/files/documentation/esp32-c3-mini-1_datasheet_en.pdf",
        "pages": 48,
        "sha256": "de7361381348d82a",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 53,
        "described": 53,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "esp32-c3-mini-1u-h4.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          13.2,
          12.5,
          2.4
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0.65,
        "footprint_binding": "identity",
        "sha256": "182bc90a90cd858a774040ce6c1e0e0cf2d7ce2b8b83c7f5144d313b296382be",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "esp32-c3-mini-1u-h4-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          13.2,
          12.5,
          2.4
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0.65,
        "footprint_binding": "identity",
        "sha256": "a248cfd1eaa70fa215d8a7b23f10623a789f69fb55829659387a9558faf949e5",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Espressif Systems",
      "Package": "ESP32-C3-MINI-1U",
      "Category": "IoT/Communication Modules",
      "Pins": "53"
    },
    "appearance": {
      "contacts": {
        "quote": "CONTACT MATERIAL: COPPER ALLOY, GOLD PLATED ALL OVER;",
        "page": 36,
        "doc": "ds.pdf",
        "material": "COPPER ALLOY",
        "plating": "gold"
      },
      "housing": {
        "quote": "HOUSING MATERIAL: THERMOPLASTIC, WHITE, UL 94V-0;",
        "page": 36,
        "doc": "ds.pdf",
        "material": "THERMOPLASTIC"
      },
      "shell": {
        "quote": "SHELL MATERIAL: COPPER ALLOY, GOLD PLATED ALL OVER;",
        "page": 36,
        "doc": "ds.pdf",
        "material": "COPPER ALLOY",
        "plating": "gold"
      },
      "version": 1,
      "datasheet_sha256": "de7361381348d82a1abd337f10170be7a420675987568f71fe3c5b100deed270"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "de7361381348d82a1abd337f10170be7a420675987568f71fe3c5b100deed270",
      "rows": [
        {
          "name": "Power supply voltage",
          "symbol": "VDD33",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 3.6,
          "conditions": "",
          "source_page": 21,
          "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": 21,
          "source": "datasheet"
        },
        {
          "name": "Power supply voltage",
          "symbol": "VDD33",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3,
          "typ": 3.3,
          "max": 3.6,
          "conditions": "",
          "source_page": 21,
          "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": 21,
          "source": "datasheet"
        },
        {
          "name": "High-level input current",
          "symbol": "IIH",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "3.3 V, 25 °C",
          "source_page": 21,
          "source": "datasheet"
        },
        {
          "name": "Low-level input current",
          "symbol": "IIL",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "3.3 V, 25 °C",
          "source_page": 21,
          "source": "datasheet"
        },
        {
          "name": "Power supply voltage (1.8 V), flash",
          "symbol": "VCC",
          "kind": "electrical",
          "unit": "V",
          "min": 1.65,
          "typ": 1.8,
          "max": 2,
          "conditions": "",
          "source_page": 23,
          "source": "datasheet"
        },
        {
          "name": "Power supply voltage (3.3 V), flash",
          "symbol": "VCC",
          "kind": "electrical",
          "unit": "V",
          "min": 2.7,
          "typ": 3.3,
          "max": 3.6,
          "conditions": "",
          "source_page": 23,
          "source": "datasheet"
        },
        {
          "name": "Maximum clock frequency, flash",
          "symbol": "FC",
          "kind": "electrical",
          "unit": "MHz",
          "min": 80,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 23,
          "source": "datasheet"
        },
        {
          "name": "Program/erase cycles, flash",
          "symbol": "",
          "kind": "electrical",
          "unit": "cycles",
          "min": 100000,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 23,
          "source": "datasheet"
        },
        {
          "name": "Data retention time, flash",
          "symbol": "TRET",
          "kind": "electrical",
          "unit": "years",
          "min": 20,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 23,
          "source": "datasheet"
        },
        {
          "name": "Page program time, flash",
          "symbol": "TPP",
          "kind": "electrical",
          "unit": "ms",
          "min": null,
          "typ": 0.8,
          "max": 5,
          "conditions": "",
          "source_page": 23,
          "source": "datasheet"
        },
        {
          "name": "Sector erase time (4 KB), flash",
          "symbol": "TSE",
          "kind": "electrical",
          "unit": "ms",
          "min": null,
          "typ": 70,
          "max": 500,
          "conditions": "",
          "source_page": 23,
          "source": "datasheet"
        },
        {
          "name": "Block erase time (32 KB), flash",
          "symbol": "TBE1",
          "kind": "electrical",
          "unit": "s",
          "min": null,
          "typ": 0.2,
          "max": 2,
          "conditions": "",
          "source_page": 23,
          "source": "datasheet"
        },
        {
          "name": "Block erase time (64 KB), flash",
          "symbol": "TBE2",
          "kind": "electrical",
          "unit": "s",
          "min": null,
          "typ": 0.3,
          "max": 3,
          "conditions": "",
          "source_page": 23,
          "source": "datasheet"
        },
        {
          "name": "Chip erase time (16 Mb), flash",
          "symbol": "TCE",
          "kind": "electrical",
          "unit": "s",
          "min": null,
          "typ": 7,
          "max": 20,
          "conditions": "",
          "source_page": 24,
          "source": "datasheet"
        },
        {
          "name": "Chip erase time (32 Mb), flash",
          "symbol": "TCE",
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