SHT40I-AD1B-R2

{
  "slug": "sht40i-ad1b-r2",
  "version": "0.1.0",
  "type": "component",
  "description": "Sensirion Global Sourcing Parts, DFN-4(1.5x1.5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "global sourcing parts",
    "sht40i-ad1b-r2",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sht40i-ad1b-r2.kicad_sym",
    "sht40i-ad1b-r2.kicad_mod",
    "sht40i-ad1b-r2.glb",
    "sht40i-ad1b-r2.step",
    "sht40i-ad1b-r2.lbr",
    "docs/hero.png",
    "docs/sht40i-ad1b-r2-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sht40i-ad1b-r2-hero.glb",
    "sht40i-ad1b-r2-hero.overlay.json",
    "sht40i-ad1b-r2-etched.glb"
  ],
  "component": {
    "mpn": "SHT40I-AD1B-R2",
    "manufacturer": "Sensirion",
    "package": "DFN-4(1.5x1.5)",
    "pin_count": 4,
    "category": "Global Sourcing Parts",
    "subcategory": "Global Sourcing Parts",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590889487805599744",
    "parts": {
      "symbol": "sht40i-ad1b-r2.kicad_sym",
      "footprint": "sht40i-ad1b-r2.kicad_mod",
      "model_3d": "sht40i-ad1b-r2-hero.glb",
      "model_3d_plain": "sht40i-ad1b-r2-etched.glb",
      "model_3d_step": "sht40i-ad1b-r2-etched.step",
      "model_3d_step_plain": "sht40i-ad1b-r2.step",
      "lbr": "sht40i-ad1b-r2.lbr"
    },
    "distributor_links": {
      "lcsc": "C3664342",
      "digikey": "1649-SHT40I-AD1B-R2TR-ND",
      "mouser": "403-SHT40I-AD1B-R2"
    },
    "distributor_check": {
      "checked_at": "2026-11-05T19:14:00Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "1649-SHT40I-AD1B-R2TR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "403-SHT40I-AD1B-R2",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SDA",
        "type": "bidirectional",
        "description": "Serial data line for the I2C interface, bidirectional; the sensor uses I2C fast mode plus at address 0x44 for this ordering option."
      },
      {
        "number": "2",
        "name": "SCL",
        "type": "input",
        "description": "Serial clock line for the I2C interface, described by the datasheet as a unidirectional input."
      },
      {
        "number": "3",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply voltage; the datasheet highlights specify VDD = 2.3 V to 5.5 V."
      },
      {
        "number": "4",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for the sensor."
      }
    ],
    "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 pin assignment table on page 14 applies to the whole SHT4xI family; it does not name the SHT40I-; Package outline and land pattern pages (pages 12 and 13 of the datasheet) are not in the provided te; Table 9 and Section 5.4 describe SCL as a 'unidirectional input'. Mapped to KiCad type 'input' as th"
        ],
        "pages_sent": 10,
        "cost_usd": 0.0671,
        "at": "2026-11-05T19:13:41"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590889487805599744",
        "pages": 21,
        "sha256": "c2e3104d2e656e47",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 4,
        "described": 4,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          1.52,
          1.5,
          0.55
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "2d86c166a3f0548c78a2651f2f98c15693af4282630b32b4720095ee6e5863aa",
        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sht40i-ad1b-r2-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          0.55
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        "centre_offset_mm": 0.0,
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        "sha256": "0b844e32f4a71f949fb4a2ef4a9111c003030b771c57d1ecef8a732a6e08aed1",
        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}