DS18B20

{
  "schema_version": 1,
  "type": "component",
  "slug": "ds18b20",
  "title": "DS18B20",
  "brief": "Analog Devices 1-Wire digital thermometer, TO-92. -55 to +125 C, 9-12 bit, unique 64-bit ID, parasite power. Datasheet-verified.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "sensor",
    "temperature",
    "1-wire",
    "thermometer",
    "to-92",
    "analog-devices"
  ],
  "component": {
    "mpn": "DS18B20",
    "manufacturer": "Analog Devices",
    "package": "TO-92",
    "pin_count": 3,
    "category": "Sensor",
    "subcategory": "1-Wire digital temperature sensor",
    "datasheet": "https://cdn.sparkfun.com/datasheets/Sensors/Temp/DS18B20.pdf",
    "parts": {
      "symbol": "ds18b20.kicad_sym",
      "footprint": "ds18b20.kicad_mod",
      "model_3d": "ds18b20-etched.glb",
      "model_3d_plain": "ds18b20.glb",
      "lbr": "ds18b20.lbr",
      "model_3d_step": "ds18b20-etched.step",
      "model_3d_step_plain": "ds18b20.step"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground return. In parasite-power mode VDD is also tied to GND; when powered externally via VDD, GND must not be floating."
      },
      {
        "number": "2",
        "name": "DQ",
        "type": "bidirectional",
        "description": "1-Wire data input/output. Open-drain, requires ~4.7 kΩ pull-up to VDD (3.0-5.5 V). Can source parasite power to the die when held high (up to ~1.5 mA during a conversion, which typically requires a strong MOSFET pull-up)."
      },
      {
        "number": "3",
        "name": "VDD",
        "type": "power_in",
        "description": "Optional external power supply, 3.0 V to 5.5 V. If tied to GND the device runs in parasite-power mode, drawing power from the DQ line. Recommended for reliable operation above 100 °C."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://cdn.sparkfun.com/datasheets/Sensors/Temp/DS18B20.pdf",
        "pages": 27,
        "sha256": "b4ecd22913b1670d",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    }
  },
  "metadata": {
    "specs": {
      "Type": "1-Wire digital temperature sensor",
      "Range": "-55 to +125 °C",
      "Accuracy": "±0.5 °C (-10 to +85 °C)",
      "Resolution": "9-12 bit (programmable)",
      "Interface": "1-Wire (single data line)",
      "Addressing": "unique 64-bit lasered ID",
      "Power": "3.0-5.5 V or parasite",
      "Package": "TO-92 (3-lead)"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ds18b20",
    "1-wire temperature sensor",
    "digital thermometer",
    "one wire temp"
  ],
  "discovery_pitch": "DS18B20 1-Wire digital temperature sensor (TO-92) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ds18b20.kicad_sym",
    "ds18b20.kicad_mod",
    "ds18b20.glb",
    "ds18b20.lbr",
    "docs/hero.png",
    "docs/ds18b20-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ds18b20-etched.step"
  ],
  "variants": [
    {
      "mpn": "DS18B20 (TO-92)",
      "kind": "packaging"
    },
    {
      "mpn": "DS18B20+ (TO-92, RoHS)",
      "kind": "packaging"
    }
  ]
}