TL4050A41QDBZR

{
  "schema_version": 1,
  "type": "component",
  "slug": "tl4050a41qdbzr",
  "title": "TL4050A41QDBZR",
  "brief": "Texas Instruments Voltage Reference, SOT-23-3. 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",
    "power management (pmic)",
    "tl4050a41qdbzr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "TL4050A41QDBZR",
    "manufacturer": "Texas Instruments",
    "package": "SOT-23-3",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tl4050a",
    "parts": {
      "symbol": "tl4050a41qdbzr.kicad_sym",
      "footprint": "tl4050a41qdbzr.kicad_mod",
      "model_3d": "tl4050a41qdbzr-hero.glb",
      "model_3d_plain": "tl4050a41qdbzr.glb",
      "model_3d_step": "tl4050a41qdbzr-etched.step",
      "model_3d_step_plain": "tl4050a41qdbzr.step",
      "lbr": "tl4050a41qdbzr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2157091",
      "digikey": "296-22789-2-ND",
      "mouser": "595-TL4050A41QDBZR"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T07:24:44Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-22789-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-TL4050A41QDBZR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CATHODE",
        "type": "passive",
        "description": "Cathode of the 4.096V shunt reference, connected to the supply through a series resistor RS, with cathode current IZ kept between the minimum (73 µA max over temperature for the Q grade ~78 µA) and 15 mA."
      },
      {
        "number": "2",
        "name": "ANODE",
        "type": "passive",
        "description": "Anode of the shunt reference, normally connected to ground."
      },
      {
        "number": "3",
        "name": "NC",
        "type": "unconnected",
        "description": "Pin 3 (marked *) must be left floating or connected to pin 2 (anode) because of a parasitic Schottky diode between pins 2 and 3; TI recommends tying it to the anode in high-EMI or high-frequency switching noise applications."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin 3 is marked only with an asterisk on the package drawing; the datasheet says it must float or co; The pin 1 description cites a minimum cathode current figure that I wrote loosely. The datasheet giv",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 41,
        "cost_usd": 0.4421,
        "at": "2026-10-11T07:24:30"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tl4050a",
        "pages": 41,
        "sha256": "9518f91a68f71d48",
        "source_tier": "lcsc"
      },
      "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"
    },
    "models_3d": [
      {
        "file": "tl4050a41qdbzr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "16964b14f93e6c778288a0c110b35f670fab733109c26f0da7dfc07cc3350040",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tl4050a41qdbzr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "653441a7ea4be5195093dc0104a588577fc441a95f3f888924ca4d66bdaad918",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOT-23-3",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "9518f91a68f71d48",
      "rows": [
        {
          "name": "Reverse breakdown voltage tolerance (25°C)",
          "symbol": "ΔVZ",
          "kind": "tolerance",
          "unit": "mV",
          "min": -4.1,
          "typ": null,
          "max": 4.1,
          "conditions": "IZ = 100μA, 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Reverse breakdown voltage tolerance (full range)",
          "symbol": "ΔVZ",
          "kind": "tolerance",
          "unit": "mV",
          "min": -25,
          "typ": null,
          "max": 25,
          "conditions": "IZ = 100μA, full range TA = -40°C to 125°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Minimum cathode current",
          "symbol": "IZ,min",
          "kind": "electrical",
          "unit": "μA",
          "min": 52,
          "typ": 68,
          "max": null,
          "conditions": "25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Minimum cathode current (full range)",
          "symbol": "IZ,min",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 78,
          "conditions": "Full range TA = -40°C to 125°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Average temperature coefficient of VZ",
          "symbol": "αVZ",
          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": -30,
          "typ": null,
          "max": 30,
          "conditions": "IZ = 10mA, 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Average temperature coefficient of VZ",
          "symbol": "αVZ",
          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "IZ = 1mA, 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "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": 8,
          "source": "datasheet"
        },
        {
          "name": "Change in VZ with cathode current",
          "symbol": "VZ",
          "kind": "voltage_coefficient",
          "unit": "mV",
          "min": 0.2,
          "typ": 0.9,
          "max": null,
          "conditions": "IZ,min < IZ < 1mA, 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Change in VZ with cathode current (full range)",
          "symbol": "VZ",
          "kind": "voltage_coefficient",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 1.2,
          "conditions": "IZ,min < IZ < 1mA, full range TA = -40°C to 125°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Change in VZ with cathode current",
          "symbol": "VZ",
          "kind": "voltage_coefficient",
          "unit": "mV",
          "min": 2,
          "typ": 7,
          "max": null,
          "conditions": "1mA < IZ < 15mA, 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Change in VZ with cathode current (full range)",
          "symbol": "VZ",
          "kind": "voltage_coefficient",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "1mA < IZ < 15mA, full range TA = -40°C to 125°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Reverse breakdown voltage",
          "symbol": "VZ",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 4.096,
          "max": null,
          "conditions": "IZ = 100μA, 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Reverse dynamic impedance",
          "symbol": "ZZ",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.5,
          "max": null,
          "conditions": "IZ = 1mA, f = 120Hz, IAC = 0.1 IZ, 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Wideband noise",
          "symbol": "eN",
          "kind": "electrical",
          "unit": "μVRMS",
          "min": null,
          "typ": 93,
          "max": null,
          "conditions": "IZ = 100μA, 10Hz ≤ f ≤ 10 kHz, 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Long-term stability of reverse breakdown voltage",
          "symbol": "VZ",
          "kind": "electrical",
          "unit": "ppm",
          "min": null,
          "typ": 120,
          "max": null,
          "conditions": "t = 1000 h, TA = 25°C ± 0.1°C, IZ = 100μA",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Thermal hysteresis",
          "symbol": "VHYST",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 1.148,
          "max": null,
          "conditions": "ΔTA = -40°C to 125°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Cathode current",
          "symbol": "IZ",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "See parameter tables",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating free-air temperature (Q)",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "Q temperature grade",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Continuous cathode current",
          "symbol": "IZ",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -10,
          "typ": null,
          "max": 20,
          "conditions": "Measured over operating free-air temperature range, unless otherwise noted",
          "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,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Package thermal resistance, junction-to-ambient (DBZ)",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 206,
          "max": null,
          "conditions": "DBZ package, per JESD 51-7",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tl4050a41qdbzr"
  ],
  "discovery_pitch": "TL4050A41QDBZR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tl4050a41qdbzr.kicad_sym",
    "tl4050a41qdbzr.kicad_mod",
    "tl4050a41qdbzr.glb",
    "tl4050a41qdbzr.step",
    "tl4050a41qdbzr.lbr",
    "docs/hero.png",
    "docs/tl4050a41qdbzr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tl4050a41qdbzr-hero.glb",
    "tl4050a41qdbzr-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}