main
Ray Set visibility: public a123b40 4h ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "tmp423aidcnt",
  "title": "TMP423AIDCNT",
  "brief": "Texas Instruments Temperature Sensors, SOT-23-8. 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",
    "sensors",
    "tmp423aidcnt",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "TMP423AIDCNT",
    "manufacturer": "Texas Instruments",
    "package": "SOT-23-8",
    "pin_count": 8,
    "category": "Sensors",
    "subcategory": "Temperature Sensors",
    "datasheet": "https://www.ti.com/lit/ds/symlink/tmp423.pdf",
    "parts": {
      "symbol": "tmp423aidcnt.kicad_sym",
      "footprint": "tmp423aidcnt.kicad_mod",
      "model_3d": "tmp423aidcnt-hero.glb",
      "model_3d_plain": "tmp423aidcnt-etched.glb",
      "model_3d_step": "tmp423aidcnt-etched.step",
      "model_3d_step_plain": "tmp423aidcnt.step",
      "lbr": "tmp423aidcnt.lbr"
    },
    "distributor_links": {
      "lcsc": "C2865777",
      "digikey": "296-23323-2-ND",
      "mouser": "595-TMP423AIDCNT"
    },
    "distributor_check": {
      "checked_at": "2026-11-05T22:53:45Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-23323-2-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-TMP423AIDCNT",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "DXP1",
        "type": "passive",
        "description": "Channel 1 positive connection to remote temperature sensor."
      },
      {
        "number": "2",
        "name": "DXP2",
        "type": "passive",
        "description": "Channel 2 positive connection to remote temperature sensor."
      },
      {
        "number": "3",
        "name": "DXP3",
        "type": "passive",
        "description": "Channel 3 positive connection to remote temperature sensor."
      },
      {
        "number": "4",
        "name": "DXN",
        "type": "passive",
        "description": "Common negative connection to remote temperature sensors, Channel 1, Channel 2, Channel 3."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "6",
        "name": "SDA",
        "type": "bidirectional",
        "description": "Serial data line for SMBus, open-drain; requires pull-up resistor to V+."
      },
      {
        "number": "7",
        "name": "SCL",
        "type": "input",
        "description": "Serial clock line for SMBus, open-drain; requires pull-up resistor to V+."
      },
      {
        "number": "8",
        "name": "V+",
        "type": "power_in",
        "description": "Positive supply voltage (2.7V to 5.5V)."
      }
    ],
    "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 addendum (page 27) lists TMP423AIDCNT as Obsolete, SOT-23 (DCN), 8 pins, with no orderable qty. "
        ],
        "pages_sent": 12,
        "cost_usd": 0.0173,
        "at": "2026-11-05T22:53:38"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/tmp423.pdf",
        "pages": 36,
        "sha256": "a8969604cee2986f",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tmp423aidcnt.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "b9dc5b435d49868df7491668d5322debfe5d699dbb41c2ad93a41518ec9b5007",
        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tmp423aidcnt-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          2.9,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "e5c3d7d13f28a0917dbb9184c48f6415fa0c1545211178b4264ec551dcefa551",
        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOT-23-8",
      "Category": "Sensors",
      "Pins": "8"
    },
    "appearance": {
      "contacts": {
        "quote": "caused by copper-to-solder connections. If these temperature sensor is not in good thermal contact",
        "page": 24,
        "doc": "ds.pdf",
        "material": "copper"
      },
      "version": 1,
      "datasheet_sha256": "a8969604cee2986f56af722b66e18a4d84ef5ff6adebee9479cbf4665c007bda"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "a8969604cee2986f56af722b66e18a4d84ef5ff6adebee9479cbf4665c007bda",
      "rows": [
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          "name": "Local temperature sensor error",
          "symbol": "TELOCAL",
          "kind": "tolerance",
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          "min": -2.5,
          "typ": 1.25,
          "max": 2.5,
          "conditions": "TA = –40°C to +125°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Local temperature sensor error",
          "symbol": "",
          "kind": "tolerance",
          "unit": "°C",
          "min": -1.5,
          "typ": 0.25,
          "max": 1.5,
          "conditions": "TA = +15°C to +85°C, V+ = 3.3V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Remote temperature sensor error",
          "symbol": "TEREMOTE",
          "kind": "tolerance",
          "unit": "°C",
          "min": -1,
          "typ": 0.25,
          "max": 1,
          "conditions": "TA = +15°C to +85°C, TD = –40°C to +150°C, V+ = 3.3V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Remote temperature sensor error",
          "symbol": "TEREMOTE",
          "kind": "tolerance",
          "unit": "°C",
          "min": -3,
          "typ": 1,
          "max": 3,
          "conditions": "TA = –40°C to +100°C, TD = –40°C to +150°C, V+ = 3.3V",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Remote temperature sensor error",
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          "kind": "tolerance",
          "unit": "°C",
          "min": -5,
          "typ": 3,
          "max": 5,
          "conditions": "TA = –40°C to +125°C, TD = –40°C to +150°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Temperature error vs supply (local/remote)",
          "symbol": "",
          "kind": "voltage_coefficient",
          "unit": "°C/V",
          "min": -0.5,
          "typ": 0.2,
          "max": 0.5,
          "conditions": "V+ = 2.7V to 5.5V",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Specified voltage range",
          "symbol": "V+",
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          "min": 2.7,
          "typ": null,
          "max": 5.5,
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          "source": "datasheet"
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        {
          "name": "Quiescent current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 32,
          "max": 38,
          "conditions": "0.0625 Conversions per Second",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Quiescent current",
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          "kind": "electrical",
          "unit": "μA",
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          "typ": 400,
          "max": 525,
          "conditions": "Eight Conversions per Second",
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          "source": "datasheet"
        },
        {
          "name": "Quiescent current, serial bus inactive, shutdown mode",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 3,
          "max": 10,
          "conditions": "Serial Bus Inactive, Shutdown Mode",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Undervoltage lockout",
          "symbol": "UVLO",
          "kind": "electrical",
          "unit": "V",
          "min": 2.3,
          "typ": 2.4,
          "max": 2.6,
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          "source": "datasheet"
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        {
          "name": "Power-on reset threshold",
          "symbol": "POR",
          "kind": "electrical",
          "unit": "V",
          "min": 1.6,
          "typ": null,
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          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Logic input high voltage (SCL, SDA)",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.1,
          "typ": null,
          "max": null,
          "conditions": "Logic Input High Voltage (SCL, SDA)",
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          "source": "datasheet"
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        {
          "name": "Logic input low voltage (SCL, SDA)",
          "symbol": "VIL",
          "kind": "electrical",
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          "max": 0.8,
          "conditions": "Logic Input Low Voltage (SCL, SDA)",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "SDA output low voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
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          "max": 0.4,
          "conditions": "IOUT = 6mA",
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          "name": "Logic input current",
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          "conditions": "0 ≤ VIN ≤ 6V",
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          "source": "datasheet"
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        {
          "name": "Specified temperature range",
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          "min": -40,
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          "max": 125,
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        {
          "name": "Storage temperature range",
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          "kind": "absolute_maximum",
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        {
          "name": "Power supply",
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        {
          "name": "Input voltage, pins 1, 2, 3 and 4",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
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          "max": null,
          "conditions": "Pins 1, 2, 3, and 4 only; upper limit VS + 0.5",
          "source_page": 2,
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        {
          "name": "Input voltage, pins 6 and 7",
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          "kind": "absolute_maximum",
          "unit": "V",
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          "conditions": "Pins 6 and 7 only",
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        {
          "name": "Input current",
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          "name": "Operating temperature range",
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        {
          "name": "Junction temperature",
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          "conditions": "TJ max",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "ESD rating, human body model",
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          "conditions": "HBM",
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          "source": "datasheet"
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        {
          "name": "ESD rating, charged device model",
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          "conditions": "CDM",
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        {
          "name": "ESD rating, machine model",
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          "typ": null,
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          "conditions": "MM",
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        {
          "name": "SMBus input capacitance (SCL, SDA)",
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          "kind": "electrical",
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          "min": null,
          "typ": 3,
          "max": null,
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          "source": "datasheet"
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        {
          "name": "SMBus clock frequency",
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          "unit": "MHz",
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        {
          "name": "SMBus timeout",
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          "min": 25,
          "typ": 30,
          "max": 35,
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        {
          "name": "Conversion time (per channel)",
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          "min": 100,
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          "max": 130,
          "conditions": "Per channel",
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          "source": "datasheet"
        },
        {
          "name": "SCL falling edge to SDA valid time",
          "symbol": "",
          "kind": "timing",
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          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "",
          "source_page": 3,
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        {
          "name": "Hysteresis",
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          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 500,
          "max": null,
          "conditions": "",
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        },
        {
          "name": "SMBus output low sink current",
          "symbol": "",
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          "min": null,
          "typ": 6,
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          "source_page": 3,
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        },
        {
          "name": "Remote sensor source current, high series resistance",
          "symbol": "",
          "kind": "electrical",
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          "typ": 120,
          "max": null,
          "conditions": "High Series Resistance 3kΩ Max",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Remote sensor source current, medium high",
          "symbol": "",
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          "unit": "μA",
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          "typ": 60,
          "max": null,
          "conditions": "Medium High",
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        {
          "name": "Remote sensor source current, medium low",
          "symbol": "",
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          "max": null,
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        {
          "name": "Remote sensor source current, low",
          "symbol": "",
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          "max": null,
          "conditions": "Low",
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        {
          "name": "Remote transistor ideality factor",
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          "typ": 1.008,
          "max": null,
          "conditions": "TMP421/22/23 Optimized Ideality Factor",
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          "source": "datasheet"
        },
        {
          "name": "Input capacitance (digital inputs)",
          "symbol": "",
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          "source": "datasheet"
        },
        {
          "name": "Leakage input current",
          "symbol": "IIN",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "0V ≤ VIN ≤ V+",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Serial bus active, fS = 400kHz, shutdown mode",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 90,
          "max": null,
          "conditions": "Serial Bus Active, fS = 400kHz, Shutdown Mode",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Serial bus active, fS = 3.4MHz, shutdown mode",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 350,
          "max": null,
          "conditions": "Serial Bus Active, fS = 3.4MHz, Shutdown Mode",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance, junction to ambient (SOT23)",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "SOT23",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tmp423aidcnt"
  ],
  "discovery_pitch": "TMP423AIDCNT (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
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