TL4050B25QDCKR

{
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  "type": "component",
  "slug": "tl4050b25qdckr",
  "title": "TL4050B25QDCKR",
  "brief": "Texas Instruments Voltage Reference, SC-70-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "power management (pmic)",
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  "component": {
    "mpn": "TL4050B25QDCKR",
    "manufacturer": "Texas Instruments",
    "package": "SC-70-5",
    "pin_count": 5,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tl4050a",
    "parts": {
      "symbol": "tl4050b25qdckr.kicad_sym",
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    "distributor_links": {
      "lcsc": "C2156845",
      "digikey": "296-22802-2-ND",
      "mouser": "595-TL4050B25QDCKR"
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      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-22802-2-ND",
        "status": "found",
        "lifecycle": "Active"
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        "pn": "595-TL4050B25QDCKR",
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    "pins": [
      {
        "number": "1",
        "name": "ANODE",
        "type": "passive",
        "description": "Anode (reference return) of the two-terminal shunt reference; the cathode current IZ returns here."
      },
      {
        "number": "2",
        "name": "*",
        "type": "passive",
        "description": "Starred pin; TI recommends connecting it to the anode in applications with high EMI (such as near transformers or other EMI sources) or significant high-frequency switching noise."
      },
      {
        "number": "3",
        "name": "CATHODE",
        "type": "passive",
        "description": "Cathode of the shunt reference, the regulated output VZ (2.5 V for the 25 option) biased through a series resistor with 15 mA maximum recommended cathode current."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "5",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      }
    ],
    "provenance": {
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        "cost_usd": 1.2128,
        "at": "2026-10-11T07:22:04"
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      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tl4050a",
        "pages": 41,
        "sha256": "9518f91a68f71d48",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
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    },
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    "models_3d": [
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        "file": "tl4050b25qdckr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.1,
          2,
          1.1
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "2860de5b7b085919ff6e952148353f928798588d9f544dc69430545aff2ba908",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SC-70-5",
      "Category": "Power Management (PMIC)",
      "Pins": "5"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "9518f91a68f71d48",
      "rows": [
        {
          "name": "Reverse breakdown voltage tolerance, initial (25°C)",
          "symbol": "ΔVZ",
          "kind": "tolerance",
          "unit": "mV",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "IZ = 100μA, TA = 25°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Reverse breakdown voltage tolerance, full range",
          "symbol": "ΔVZ",
          "kind": "tolerance",
          "unit": "mV",
          "min": -18,
          "typ": null,
          "max": 18,
          "conditions": "IZ = 100μA, full range TA = -40°C to 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Minimum cathode current",
          "symbol": "IZ,min",
          "kind": "electrical",
          "unit": "μA",
          "min": 41,
          "typ": 60,
          "max": null,
          "conditions": "TA = 25°C",
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          "source": "datasheet"
        },
        {
          "name": "Minimum cathode current, full range",
          "symbol": "IZ,min",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 65,
          "conditions": "full range TA = -40°C to 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Average temperature coefficient of VZ",
          "symbol": "αVZ",
          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "IZ = 10mA, TA = 25°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Average temperature coefficient of VZ",
          "symbol": "αVZ",
          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": -15,
          "typ": null,
          "max": 15,
          "conditions": "IZ = 1mA, TA = 25°C",
          "source_page": 6,
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        },
        {
          "name": "Average temperature coefficient of VZ",
          "symbol": "αVZ",
          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "IZ = 100μA, full range TA = -40°C to 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Change of VZ with cathode current",
          "symbol": "VZ",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 0.3,
          "max": 0.8,
          "conditions": "IZ,min < IZ < 1mA, TA = 25°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Change of VZ with cathode current, full range",
          "symbol": "VZ",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 1.2,
          "conditions": "IZ,min < IZ < 1mA, full range TA = -40°C to 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Change of VZ with cathode current",
          "symbol": "VZ",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 2.3,
          "max": 6,
          "conditions": "1mA < IZ < 15mA, TA = 25°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Change of VZ with cathode current, full range",
          "symbol": "VZ",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "1mA < IZ < 15mA, full range TA = -40°C to 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Reverse breakdown voltage",
          "symbol": "VZ",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 2.5,
          "max": null,
          "conditions": "IZ = 100μA, TA = 25°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Reverse dynamic impedance",
          "symbol": "ZZ",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.3,
          "max": null,
          "conditions": "IZ = 1mA, f = 120Hz, IAC = 0.1 IZ, TA = 25°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Broadband noise",
          "symbol": "eN",
          "kind": "electrical",
          "unit": "μVRMS",
          "min": null,
          "typ": 41,
          "max": null,
          "conditions": "IZ = 100μA, 10Hz ≤ f ≤ 10kHz, TA = 25°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Long-term stability of reverse breakdown voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "ppm",
          "min": null,
          "typ": 120,
          "max": null,
          "conditions": "t = 1000 h, TA = 25°C ± 0.1°C, IZ = 100μA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Thermal hysteresis",
          "symbol": "VHYST",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 0.7,
          "max": null,
          "conditions": "ΔTA = -40°C to 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Continuous cathode current",
          "symbol": "IZ",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -10,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating virtual junction temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
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        {
          "name": "Storage temperature range",
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          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Cathode current",
          "symbol": "IZ",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "",
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        },
        {
          "name": "Ambient temperature, I grade (TL4050xI)",
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          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "natural ventilation, I temperature grade",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Ambient temperature, Q grade (TL4050xQ)",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "natural ventilation, Q temperature grade",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Package thermal impedance, DCK (SC70)",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 252,
          "max": null,
          "conditions": "DCK package, per JESD 51-7",
          "source_page": 4,
          "source": "datasheet"
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      ]
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    "name": "Ray",
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