main
Ray Set visibility: public 0741474 1d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "2sa1943otu",
  "title": "2SA1943OTU",
  "brief": "onsemi Bipolar Transistors - BJT, TO-264-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "triode-mos tube-transistor",
    "2sa1943otu",
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    "extractor-text"
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  "component": {
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    "manufacturer": "onsemi",
    "package": "TO-264-3",
    "pin_count": 3,
    "category": "Triode/MOS Tube/Transistor",
    "subcategory": "Bipolar Transistors - BJT",
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    "parts": {
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      "footprint": "2sa1943otu.kicad_mod",
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      "lbr": "2sa1943otu.lbr"
    },
    "distributor_links": {
      "lcsc": "C898059",
      "digikey": "2SA1943OTU-ND",
      "mouser": "512-2SA1943OTU"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T16:16:42Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2SA1943OTU-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "512-2SA1943OTU",
        "status": "found",
        "lifecycle": "End of Life"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Base",
        "type": "input",
        "description": "Base terminal; base current IB is rated at -1.5 A (absolute maximum) for this PNP device."
      },
      {
        "number": "2",
        "name": "Collector",
        "type": "passive",
        "description": "Collector terminal; collector current IC is rated at -17 A and collector-base voltage BVCBO at -250 V (absolute maximum)."
      },
      {
        "number": "3",
        "name": "Emitter",
        "type": "passive",
        "description": "Emitter terminal; emitter-base voltage BVEBO is rated at -5 V (absolute maximum)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet names the package 'TO-264' and does not use the label 'TO-264-3'; the 3-pin mapping co; The datasheet gives no pin types (input/passive) and no pin-level functional descriptions beyond the; The page 6 package drawing is a JEDEC TO264 variation AA outline with dimensions only; it does not l"
        ],
        "pages_sent": 7,
        "cost_usd": 0.0322,
        "at": "2026-10-30T16:16:30"
      },
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        "url": "https://www.onsemi.com/pdf/datasheet/2sa1943otu-d.pdf",
        "pages": 7,
        "sha256": "dc4bcc9dee482652",
        "source_tier": "mfr"
      },
      "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": [
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        "file": "2sa1943otu.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          20.2,
          5,
          46
        ],
        "zmin_mm": -17.5,
        "centre_offset_mm": 0.975,
        "footprint_binding": "identity",
        "sha256": "2f655d17fcf3ca071707e915b26ff2c4d479479ea3ec290f938ce5750dab9c1f",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "2sa1943otu-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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        "zmin_mm": -17.5,
        "centre_offset_mm": 0.975,
        "footprint_binding": "identity",
        "sha256": "001bf43585f0292f7e12ae4337b82e6ac3dec0f4edd4ea18c46615d09841e304",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "TO-264-3",
      "Category": "Triode/MOS Tube/Transistor",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "dc4bcc9dee48265240a6c8aa7e1793f020815e7dc85aec4e6abdaf331b660cea",
      "rows": [
        {
          "name": "Collector-Base Breakdown Voltage",
          "symbol": "BVCBO",
          "kind": "electrical",
          "unit": "V",
          "min": -250,
          "typ": null,
          "max": null,
          "conditions": "IC=-5mA, IE=0",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Breakdown Voltage",
          "symbol": "BVCEO",
          "kind": "electrical",
          "unit": "V",
          "min": -250,
          "typ": null,
          "max": null,
          "conditions": "IC=-10mA, RBE=∞",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Emitter-Base Breakdown Voltage",
          "symbol": "BVEBO",
          "kind": "electrical",
          "unit": "V",
          "min": -5,
          "typ": null,
          "max": null,
          "conditions": "IE=-5mA, IC=0",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Collector Cut-off Current",
          "symbol": "ICBO",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": -5,
          "conditions": "VCB=-230V, IE=0",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Emitter Cut-off Current",
          "symbol": "IEBO",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": -5,
          "conditions": "VEB=-5V, IC=0",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC Current Gain (hFE1)",
          "symbol": "hFE1",
          "kind": "electrical",
          "unit": "",
          "min": 55,
          "typ": null,
          "max": 160,
          "conditions": "VCE=-5V, IC=-1A",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC Current Gain (hFE2)",
          "symbol": "hFE2",
          "kind": "electrical",
          "unit": "",
          "min": 35,
          "typ": null,
          "max": 60,
          "conditions": "VCE=-5V, IC=-7A",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Saturation Voltage",
          "symbol": "VCE(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": -0.4,
          "max": -3,
          "conditions": "IC=-8A, IB=-0.8A",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Base-Emitter On Voltage",
          "symbol": "VBE(on)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": -1,
          "max": -1.5,
          "conditions": "VCE=-5V, IC=-7A",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Current Gain Bandwidth Product",
          "symbol": "fT",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": 30,
          "max": null,
          "conditions": "VCE=-5V, IC=-1A",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Capacitance",
          "symbol": "Cob",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 360,
          "max": null,
          "conditions": "VCB=-10V, f=1MHz",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Collector-Base Voltage",
          "symbol": "BVCBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -250,
          "typ": null,
          "max": null,
          "conditions": "Ta=25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Voltage",
          "symbol": "BVCEO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -250,
          "typ": null,
          "max": null,
          "conditions": "Ta=25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Emitter-Base Voltage",
          "symbol": "BVEBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -5,
          "typ": null,
          "max": null,
          "conditions": "Ta=25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector Current",
          "symbol": "IC",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": -17,
          "typ": null,
          "max": null,
          "conditions": "Ta=25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Base Current",
          "symbol": "IB",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": -1.5,
          "typ": null,
          "max": null,
          "conditions": "Ta=25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Total Device Dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "TC=25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Derating above 25°C",
          "symbol": "",
          "kind": "thermal",
          "unit": "W/°C",
          "min": null,
          "typ": null,
          "max": 1.04,
          "conditions": "derate above 25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Junction and Storage Temperature",
          "symbol": "TJ, TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -50,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, Junction to Case",
          "symbol": "RθJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 0.83,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "2sa1943otu"
  ],
  "discovery_pitch": "2SA1943OTU (onsemi) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "2sa1943otu-etched.glb"
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  "visibility": {
    "public": true
  }
}