main
Ray Set visibility: public 26816ee 23d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "kst8050s",
  "title": "KST8050S",
  "brief": "KEXIN Bipolar (BJT), SOT-23. 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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    "transistors-thyristors",
    "kst8050s",
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    "extractor-text"
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  "component": {
    "mpn": "KST8050S",
    "manufacturer": "KEXIN",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588884505532358656",
    "parts": {
      "symbol": "kst8050s.kicad_sym",
      "footprint": "kst8050s.kicad_mod",
      "model_3d": "kst8050s-hero.glb",
      "model_3d_plain": "kst8050s-etched.glb",
      "model_3d_step": "kst8050s-etched.step",
      "model_3d_step_plain": "kst8050s.step",
      "lbr": "kst8050s.lbr"
    },
    "distributor_links": {
      "lcsc": "C369924"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T02:30:08Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Base",
        "type": "passive",
        "description": "Base terminal of the KST8050S NPN transistor; the datasheet gives emitter-base breakdown VEBO of 5 V and saturation test conditions of IC = 500 mA with IB = 50 mA."
      },
      {
        "number": "2",
        "name": "Emitter",
        "type": "passive",
        "description": "Emitter terminal of the KST8050S NPN transistor; the absolute maximum emitter-base voltage VEBO is 5 V."
      },
      {
        "number": "3",
        "name": "Collector",
        "type": "passive",
        "description": "Collector terminal of the KST8050S NPN transistor; absolute maximums are VCBO 40 V, VCEO 25 V, continuous IC 0.5 A, and collector dissipation PC 0.3 W."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "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 gives only one package, SOT-23, with the pin list 1.Base, 2.Emitter, 3.collector. It d; Pin 3 is printed as lowercase 'collector' in the datasheet; it is normalized to 'Collector' here."
        ],
        "pages_sent": 2,
        "cost_usd": 0.0218,
        "at": "2026-10-19T02:27:59"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588884505532358656",
        "pages": 2,
        "sha256": "cb5618b03f730e53",
        "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": "kst8050s.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": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "kst8050s-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "0dde80df39420cadf383a55b2f198d28f5448ba6d1c27e770c5136daf7a975e2",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "KEXIN",
      "Package": "SOT-23",
      "Category": "Transistors/Thyristors",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "cb5618b03f730e537693e1cdca5c4714ccf23fe5c53f2f709a116bdc4547622d",
      "rows": [
        {
          "name": "Collector-Base breakdown voltage",
          "symbol": "VCBO",
          "kind": "electrical",
          "unit": "V",
          "min": 40,
          "typ": null,
          "max": null,
          "conditions": "IC = 100 uA, IE = 0",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter breakdown voltage",
          "symbol": "VCEO",
          "kind": "electrical",
          "unit": "V",
          "min": 25,
          "typ": null,
          "max": null,
          "conditions": "IC = 1 mA, IB = 0",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Emitter-Base breakdown voltage",
          "symbol": "VEBO",
          "kind": "electrical",
          "unit": "V",
          "min": 5,
          "typ": null,
          "max": null,
          "conditions": "IE = 100 uA, IC = 0",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-Base cut-off current",
          "symbol": "ICBO",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "VCB = 40 V, IE = 0",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter cut-off current",
          "symbol": "ICEO",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "VCE = 20 V, IB = 0",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Emitter-Base cut-off current",
          "symbol": "IEBO",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "VEB = 5 V, IC = 0",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "DC current gain hFE(1) at 50 mA (family range)",
          "symbol": "hFE",
          "kind": "electrical",
          "unit": "",
          "min": 120,
          "typ": null,
          "max": 400,
          "conditions": "VCE = 1 V, IC = 50 mA",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "DC current gain hFE at 500 mA",
          "symbol": "hFE",
          "kind": "electrical",
          "unit": "",
          "min": 50,
          "typ": null,
          "max": null,
          "conditions": "VCE = 1 V, IC = 500 mA",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "DC current gain classification hFE(1) for KST8050S",
          "symbol": "hFE",
          "kind": "electrical",
          "unit": "",
          "min": 200,
          "typ": null,
          "max": 350,
          "conditions": "hFE(1) classification for KST8050S (no other classification conditions printed)",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter saturation voltage",
          "symbol": "VCE(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.6,
          "conditions": "IC = 500 mA, IB = 50 mA",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Base-Emitter saturation voltage",
          "symbol": "VBE(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.2,
          "conditions": "IC = 500 mA, IB = 50 mA",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Transition frequency",
          "symbol": "fT",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "VCE = 6 V, IC = 20 mA, f = 30 MHz",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-Base voltage",
          "symbol": "VCBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter voltage",
          "symbol": "VCEO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 25,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Emitter-Base voltage",
          "symbol": "VEBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector current, continuous",
          "symbol": "IC",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector dissipation",
          "symbol": "PC",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "Tj",
          "kind": "absolute_maximum",
          "unit": "",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "kst8050s"
  ],
  "discovery_pitch": "KST8050S (KEXIN) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
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    "kst8050s.kicad_mod",
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    "kst8050s.step",
    "kst8050s.lbr",
    "docs/hero.png",
    "docs/kst8050s-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "kst8050s-hero.glb",
    "kst8050s-hero.overlay.json",
    "kst8050s-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}