main
Ray Set visibility: public 6f12bbe 16d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "ad-bcp51-16",
  "title": "AD-BCP51-16",
  "brief": "Changjing Bipolar (BJT), SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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    "subcategory": "Bipolar (BJT)",
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      "lbr": "ad-bcp51-16.lbr"
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    "distributor_links": {
      "lcsc": "C2975720"
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    "distributor_check": {
      "checked_at": "2026-10-17T22:13:08Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
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        "status": "quota"
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      "mouser": {
        "pn": null,
        "status": "quota"
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    },
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        "name": "BASE",
        "type": "input",
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      },
      {
        "number": "2",
        "name": "COLLECTOR",
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      },
      {
        "number": "3",
        "name": "EMITTER",
        "type": "passive",
        "description": "Emitter of the PNP transistor, with VEBO limited to -5 V relative to the base."
      }
    ],
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        "primary_model": "claude-sonnet-5-5",
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        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The SOT-223 drawing shows a tab at the top of the package. The datasheet does not label it or say wh; The datasheet gives no pin-type classes. Base is mapped to input, and collector and emitter to passi",
          "vision extraction: provenance cannot be text-verified; needs consensus"
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        "pages_sent": 6,
        "cost_usd": 0.1973,
        "at": "2026-10-17T22:11:52"
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        "pages": 6,
        "sha256": "1eeae39641cfe66d",
        "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
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "77ad6dbacc493cb619c728f26d2ddcf461eb0feb6b977b47d01d51e67016f654",
        "checked": "2026-10-17",
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  "metadata": {
    "specs": {
      "Manufacturer": "Changjing",
      "Package": "SOT-223",
      "Category": "Transistors/Thyristors",
      "Pins": "3"
    },
    "appearance": {
      "housing": {
        "quote": "Peak pulsed base current IBM -200 mA Collector power dissipation PC",
        "page": 2,
        "doc": "ds.pdf",
        "material": "PC"
      },
      "version": 1,
      "datasheet_sha256": "1eeae39641cfe66d4fc6cfa53105ea9ad43ad66edffe581fa27a07231362dbc5"
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    "characteristics": {
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      "source": "datasheet",
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          "typ": null,
          "max": null,
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        },
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          "max": null,
          "conditions": "",
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          "min": -5,
          "typ": null,
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          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Collector continuous current",
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          "min": -1,
          "typ": null,
          "max": null,
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        {
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        {
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          "min": -100,
          "typ": null,
          "max": null,
          "conditions": "",
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          "typ": null,
          "max": null,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Collector power dissipation",
          "symbol": "PC",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 1.5,
          "conditions": "Footnote 1: maximum allowed temperature Tj = 25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance from junction to ambient",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 94,
          "conditions": "Footnote 2: mounted on 1 inch2 FR-4 board, 1oz copper, still air, Ta = 25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating junction and storage temperature range",
          "symbol": "Tj, Tstg",
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          "unit": "°C",
          "min": -55,
          "typ": null,
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          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector-base breakdown voltage (AD-BCP51)",
          "symbol": "V(BR)CBO",
          "kind": "electrical",
          "unit": "V",
          "min": -45,
          "typ": null,
          "max": null,
          "conditions": "IC = -0.1mA, IE = 0A",
          "source_page": 2,
          "source": "datasheet"
        },
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        {
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          "symbol": "V(BR)EBO",
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          "source": "datasheet"
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        {
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          "max": -100,
          "conditions": "VCB = -30V, IE = 0A",
          "source_page": 2,
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        {
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          "symbol": "hFE(1)",
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          "min": 25,
          "typ": null,
          "max": null,
          "conditions": "VCE = -2V, IC = -5mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "DC current gain (rank -16 range)",
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          "unit": "",
          "min": 100,
          "typ": null,
          "max": 250,
          "conditions": "VCE = -2V, IC = -150mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector-emitter saturation voltage",
          "symbol": "VCE(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -0.5,
          "conditions": "IC = -500mA, IB = -50mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Base-emitter voltage",
          "symbol": "VBE",
          "kind": "electrical",
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          "conditions": "IC = -500mA, VCE = -2V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Transition frequency",
          "symbol": "fT",
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          "unit": "MHz",
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          "conditions": "VCE = -10V, IC = -50mA, f = 100MHz",
          "source_page": 2,
          "source": "datasheet"
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      ]
    }
  },
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  "discovery_triggers": [
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  ],
  "discovery_pitch": "AD-BCP51-16 (Changjing) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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}