main
Ray lm4040celt-3-0: specified limits as data (metadata.characteristics, 20 rows from the datasheet) db0c471 16d ago
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  "slug": "lm4040celt-3-0",
  "title": "LM4040CELT-3.0",
  "brief": "STMicroelectronics Voltage Reference, SOT-23-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "manufacturer": "STMicroelectronics",
    "package": "SOT-23-3L",
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    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
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      "digikey": "497-LM4040CELT-3.0TR-ND",
      "mouser": "511-LM4040CELT-3.0"
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      "source": "Component Ocean /api/assign-pns",
      "digikey": {
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        "status": "found",
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    "pins": [
      {
        "number": "1",
        "name": "K",
        "type": "passive",
        "description": "Cathode of the shunt reference, where the 3.0 V reverse breakdown voltage is set with Ik of 12 µA minimum and 15 mA maximum operating current."
      },
      {
        "number": "2",
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        "description": "Anode of the shunt reference, the common return terminal."
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      {
        "number": "3",
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        "primary_model": "claude-haiku-5-5",
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        "guard_notes": [
          "extractor flagged: The Figure 1 text for SOT23-3L is flattened and does not show clearly which printed number belongs t; The 'NC' label is assigned to pin 2 by inference only. The text does not state explicitly which SOT2; The datasheet gives no separate electrical limits for the individual pins. The pin descriptions use "
        ],
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        "cost_usd": 0.1078,
        "at": "2026-10-11T13:36:39"
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        "described": 3,
        "cites_pages": true,
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        "seat": "z = 0",
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
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        "checked": "2026-10-11",
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  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "SOT-23-3L",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
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    "characteristics": {
      "version": 1,
      "source": "datasheet",
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      "rows": [
        {
          "name": "Reverse breakdown voltage (Vk = 3.0 V), LM4040C",
          "symbol": "Vk",
          "kind": "electrical",
          "unit": "V",
          "min": 2.985,
          "typ": 3,
          "max": 3.015,
          "conditions": "Ik = 12 µA, LM4040C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Precision at 25 °C (LM4040C, 0.5%)",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "Tamb = 25 °C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Average temperature coefficient",
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          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": null,
          "typ": 20,
          "max": 70,
          "conditions": "10 µA < Ik < 20 mA",
          "source_page": 4,
          "source": "datasheet"
        },
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          "name": "Reverse breakdown voltage change with operating current range",
          "symbol": "ΔVk/ΔIk",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 0.2,
          "max": 1,
          "conditions": "Ik min < Ik < 1 mA, -40°C < Tamb < +125°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Reverse breakdown voltage change with operating current range",
          "symbol": "ΔVk/ΔIk",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 1.7,
          "max": 4,
          "conditions": "1 mA < Ik < 15 mA, -40°C < Tamb < +125°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Static impedance",
          "symbol": "Rka",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.15,
          "max": 0.3,
          "conditions": "ΔIk = 10 µA to 10 mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Reverse breakdown current",
          "symbol": "Ik",
          "kind": "absolute_maximum",
          "unit": "mA",
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          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Forward current",
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          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation",
          "symbol": "Pd",
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          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "Tamb = 25 °C, Tjmax = 150 °C (footnote 1)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstd",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "ESD Human Body Model (HBM)",
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          "unit": "kV",
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          "typ": null,
          "max": 2,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ESD Machine Model (MM)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ESD Charged device model",
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          "unit": "V",
          "min": null,
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          "max": 1500,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Lead temperature (soldering)",
          "symbol": "Tlead",
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          "min": null,
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          "max": 260,
          "conditions": "10 sec.",
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        {
          "name": "Max. junction temperature",
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          "typ": null,
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          "conditions": "",
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        },
        {
          "name": "Minimum operating current",
          "symbol": "Ikmin",
          "kind": "recommended_operating",
          "unit": "µA",
          "min": 10,
          "typ": null,
          "max": null,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Maximum operating current",
          "symbol": "Ikmax",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Operating free air temperature range",
          "symbol": "Toper",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction ambient",
          "symbol": "RthJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 210,
          "max": null,
          "conditions": "SOT23-3L",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction-case",
          "symbol": "RthJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 103,
          "max": null,
          "conditions": "SOT23-3L",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
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  "author": {
    "name": "Ray",
    "email": "[email protected]"
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