main
Ray Set visibility: public c28741e 5h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "zr431fta",
  "title": "ZR431FTA",
  "brief": "Diodes Incorporated 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)",
    "zr431fta",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ZR431FTA",
    "manufacturer": "Diodes Incorporated",
    "package": "SOT-23-3",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8560092520949436416",
    "parts": {
      "symbol": "zr431fta.kicad_sym",
      "footprint": "zr431fta.kicad_mod",
      "model_3d": "zr431fta-hero.glb",
      "model_3d_plain": "zr431fta-etched.glb",
      "model_3d_step": "zr431fta-etched.step",
      "model_3d_step_plain": "zr431fta.step",
      "lbr": "zr431fta.lbr"
    },
    "distributor_links": {
      "lcsc": "C441835"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T14:39:27Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VREF",
        "type": "power_in",
        "description": "Reference input of the adjustable shunt regulator, taken from the external R1/R2 divider; nominal reference voltage is 2.5V (2% tolerance for ZR431FTA)."
      },
      {
        "number": "2",
        "name": "VZ",
        "type": "passive",
        "description": "Cathode of the shunt regulator; cathode voltage ranges from VREF to 20V (absolute maximum 20V) and cathode current from 0.05mA to 100mA (absolute maximum 150mA)."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (anode) of the shunt regulator; all voltages are specified relative to this pin."
      }
    ],
    "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 electrical types (VREF as input, VZ as passive) are inferred from the circuit function, since th",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 11,
        "cost_usd": 0.1715,
        "at": "2026-10-17T14:37:27"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8560092520949436416",
        "pages": 11,
        "sha256": "93e5c58d4c91bc6c",
        "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": "zr431fta.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": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "zr431fta-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": "ec509efc4d253f4b346fda2bd0e18c5e6e11d160c57dac4d5c6ecad64ce3a306",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Diodes Incorporated",
      "Package": "SOT-23-3",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "appearance": {
      "contacts": {
        "quote": " Terminals: Finish — Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208  Weight:",
        "page": 10,
        "doc": "ds.pdf",
        "plating": "tin"
      },
      "version": 1,
      "datasheet_sha256": "93e5c58d4c91bc6cc7102922efe58cfded802dabec5df56c9260693a8885d1a9"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "93e5c58d4c91bc6cc7102922efe58cfded802dabec5df56c9260693a8885d1a9",
      "rows": [
        {
          "name": "Reference Voltage (2% tolerance)",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 2.45,
          "typ": 2.5,
          "max": 2.55,
          "conditions": "IL = 10mA (Figure 1), VZ = VREF",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Cathode Current (operating range)",
          "symbol": "IZ",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": 0.05,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Cathode Voltage (recommended)",
          "symbol": "VZ",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Cathode Voltage",
          "symbol": "VZ",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Cathode Current",
          "symbol": "IZ",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature Range",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "TST",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation (SOT23)",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 330,
          "conditions": "SOT23; ratings apply at TA = +25°C (Notes 5, 6)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Deviation of Reference Input Voltage over Temperature",
          "symbol": "VDEV",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 10,
          "max": 30,
          "conditions": "IL = 10mA, VZ = VREF, TA = Full Range (Figure 1)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Ratio of Change in VREF to Change in VZ (VZ from VREF to 10V)",
          "symbol": "ΔVREF/ΔVZ",
          "kind": "electrical",
          "unit": "mV/V",
          "min": null,
          "typ": -1.85,
          "max": -2.7,
          "conditions": "VZ from VREF to 10V, IZ = 10mA (Figure 2)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Ratio of Change in VREF to Change in VZ (VZ from 10V to 20V)",
          "symbol": "ΔVREF/ΔVZ",
          "kind": "electrical",
          "unit": "mV/V",
          "min": null,
          "typ": -1,
          "max": -2,
          "conditions": "VZ from 10V to 20V, IZ = 10mA (Figure 2)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Reference Input Current",
          "symbol": "IREF",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.12,
          "max": 1,
          "conditions": "R1 = 10k, R2 = O/C, IL = 10mA (Figure 2)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Deviation of Reference Input Current over Temperature",
          "symbol": "ΔIREF",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.04,
          "max": 0.2,
          "conditions": "R1 = 10k, R2 = O/C, IL = 10mA, TA = Full Range (Figure 2)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Minimum Cathode Current for Regulation",
          "symbol": "IZ(MIN)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 35,
          "max": 50,
          "conditions": "VZ = VREF (Figure 1)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Off-State Current",
          "symbol": "IZ(OFF)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "VZ = 20V, VREF = 0V (Figure 3)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Dynamic Output Impedance",
          "symbol": "RZ",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 0.75,
          "conditions": "VZ = VREF (Figure 1), f = 0Hz",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Temperature Coefficient (Features list)",
          "symbol": "",
          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": null,
          "typ": null,
          "max": 72,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "zr431fta"
  ],
  "discovery_pitch": "ZR431FTA (Diodes Incorporated) 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",
    "zr431fta.kicad_sym",
    "zr431fta.kicad_mod",
    "zr431fta.glb",
    "zr431fta.step",
    "zr431fta.lbr",
    "docs/hero.png",
    "docs/zr431fta-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "zr431fta-hero.glb",
    "zr431fta-hero.overlay.json",
    "zr431fta-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}