main
Ray Set visibility: public e56aa72 8d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "tlv431csn1t1g",
  "title": "TLV431CSN1T1G",
  "brief": "onsemi Voltage Reference, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "mpn": "TLV431CSN1T1G",
    "manufacturer": "onsemi",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
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    "distributor_links": {
      "lcsc": "C894747",
      "digikey": "TLV431CSN1T1GOSTR-ND",
      "mouser": "863-TLV431CSN1T1G"
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    "distributor_check": {
      "checked_at": "2026-10-19T07:35:54Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "TLV431CSN1T1GOSTR-ND",
        "status": "found",
        "lifecycle": "Active"
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        "pn": "863-TLV431CSN1T1G",
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    "pins": [
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        "number": "1",
        "name": "Reference",
        "type": "passive",
        "description": "Reference input of the shunt regulator; the device regulates so that Vref is 1.24 V typical at IK = 10 mA, and Iref is specified at 0.15 typical with a 0.3 maximum at 10 mA."
      },
      {
        "number": "2",
        "name": "Anode",
        "type": "power_in",
        "description": "Common anode of the shunt regulator, which is the reference for the cathode voltage; the cathode-to-anode voltage must be at least Vref and no more than 16 V recommended (18 V absolute maximum)."
      },
      {
        "number": "3",
        "name": "Cathode",
        "type": "passive",
        "description": "Cathode of the shunt regulator, carrying a continuous cathode current of 0.1 mA to 20 mA recommended (−20 mA to 25 mA absolute range)."
      }
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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        ],
        "pages_sent": 20,
        "cost_usd": 0.097,
        "at": "2026-10-19T07:35:42"
      },
      "datasheet": {
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        "pages": 20,
        "sha256": "0b54d1df8ad5d3df",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
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  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "SOT-23",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
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          "name": "Reference Voltage, TA = 25°C",
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          "kind": "electrical",
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          "min": 1.237,
          "typ": 1.24,
          "max": 1.243,
          "conditions": "VKA = Vref, IK = 10 mA, TA = 25°C",
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          "symbol": "Vref",
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          "min": null,
          "typ": 7.2,
          "max": 20,
          "conditions": "VKA = Vref, IK = 10 mA, TA = Tlow to Thigh (Notes 5, 6, 7)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Ratio of Reference Input Voltage Change to Cathode Voltage Change",
          "symbol": "Vref/VKA",
          "kind": "electrical",
          "unit": "mV/V",
          "min": null,
          "typ": -0.6,
          "max": -1.5,
          "conditions": "VKA = Vref to 16 V, IK = 10 mA",
          "source_page": 4,
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        {
          "name": "Reference Terminal Current",
          "symbol": "Iref",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.15,
          "max": 0.3,
          "conditions": "IK = 10 mA, R1 = 10 k, R2 = open",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Reference Input Current Deviation Over Temperature",
          "symbol": "Iref",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.04,
          "max": 0.08,
          "conditions": "IK = 10 mA, R1 = 10 k, R2 = open, Notes 5, 6, 7",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum Cathode Current for Regulation",
          "symbol": "IK(min)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 30,
          "max": 80,
          "conditions": "Figure 3",
          "source_page": 4,
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        },
        {
          "name": "Off-State Cathode Current",
          "symbol": "IK(off)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.01,
          "max": 0.04,
          "conditions": "VKA = 6.0 V, Vref = 0",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Off-State Cathode Current",
          "symbol": "IK(off)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.012,
          "max": 0.05,
          "conditions": "VKA = 16 V, Vref = 0",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Dynamic Impedance",
          "symbol": "|ZKA|",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.25,
          "max": 0.4,
          "conditions": "VKA = Vref, IK = 0.1 mA to 20 mA, f ≤ 1.0 kHz, Note 8",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Cathode to Anode Voltage (recommended)",
          "symbol": "VKA",
          "kind": "recommended_operating",
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          "min": null,
          "typ": null,
          "max": 16,
          "conditions": "",
          "source_page": 2,
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        },
        {
          "name": "Cathode Current (recommended)",
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          "kind": "recommended_operating",
          "unit": "mA",
          "min": 0.1,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Cathode to Anode Voltage (maximum rating)",
          "symbol": "VKA",
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          "unit": "V",
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          "conditions": "",
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        {
          "name": "Cathode Current Range, Continuous",
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          "unit": "mA",
          "min": -20,
          "typ": null,
          "max": 25,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Reference Input Current Range, Continuous",
          "symbol": "Iref",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": 0.05,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Ambient Temperature Range (TLV431)",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "TLV431 (not NCV/SCV)",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Storage Temperature Range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
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          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, Junction-to-Ambient, SOT-23-3 (SN1 suffix)",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 491,
          "max": null,
          "conditions": "SN1 Suffix Package, SOT-23-3",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
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  "author": {
    "name": "Ray",
    "email": "[email protected]"
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