main
Ray Set visibility: public 87aa61a 5d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "2n5551-b",
  "title": "2N5551-B",
  "brief": "Foshan Blue Rocket Elec Bipolar (BJT), TO-92. 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",
    "2n5551-b",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "2N5551-B",
    "manufacturer": "Foshan Blue Rocket Elec",
    "package": "TO-92",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588890678495752192",
    "parts": {
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      "footprint": "2n5551-b.kicad_mod",
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      "model_3d_plain": "2n5551-b-etched.glb",
      "model_3d_step": "2n5551-b-etched.step",
      "model_3d_step_plain": "2n5551-b.step",
      "lbr": "2n5551-b.lbr"
    },
    "distributor_links": {
      "lcsc": "C305399"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T07:19:06Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Collector",
        "type": "passive",
        "description": "Collector terminal of the NPN transistor; the datasheet rates VCBO at 180 V, VCEO at 160 V, and continuous IC at 600 mA."
      },
      {
        "number": "2",
        "name": "Base",
        "type": "passive",
        "description": "Base terminal of the NPN transistor; the datasheet rates continuous base current IB at 300 mA and emitter-to-base voltage VEBO at 6.0 V."
      },
      {
        "number": "3",
        "name": "Emitter",
        "type": "passive",
        "description": "Emitter terminal of the NPN transistor, the reference for the VEBO 6.0 V emitter-to-base rating."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
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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 MPN 2N5551-B carries a '-B' suffix that does not appear anywhere in the datasheet. The datasheet; Pin numbers and names come from the pinning text on page 1 ('PIN1: Collector, PIN 2: Base, PIN 3: Em; The datasheet lists TO-92 bulk and ammo (tape) packaging. The pinout is the same for both, so the pa"
        ],
        "pages_sent": 6,
        "cost_usd": 0.0255,
        "at": "2026-10-19T07:17:08"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588890678495752192",
        "pages": 6,
        "sha256": "0bd23f9c6e012db1",
        "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": [
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        "file": "2n5551-b.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          4.83,
          3.745,
          9.8
        ],
        "zmin_mm": -2.5,
        "centre_offset_mm": 0.542,
        "footprint_binding": "identity",
        "sha256": "f0b61c32ecbf0067157adc5a3d4966ceadf5d6dafe93c51af35f76c41c71a54a",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "2n5551-b-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
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        "footprint_binding": "identity",
        "sha256": "4371e286f8d21e30c287adbacad2f66544d67359ce33da4aaa367477623029a7",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Foshan Blue Rocket Elec",
      "Package": "TO-92",
      "Category": "Transistors/Thyristors",
      "Pins": "3"
    },
    "appearance": {
      "housing": {
        "quote": "Base Current - Continuous IB 300 mA Collector Power Dissipation PC 625 mW",
        "page": 2,
        "doc": "ds.pdf",
        "material": "PC"
      },
      "version": 1,
      "datasheet_sha256": "0bd23f9c6e012db161e2a8e429c953556c8c4a883a92486e3b0b74067576debc"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "0bd23f9c6e012db161e2a8e429c953556c8c4a883a92486e3b0b74067576debc",
      "rows": [
        {
          "name": "Collector to Base Voltage",
          "symbol": "VCBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 180,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector to Emitter Voltage",
          "symbol": "VCEO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 160,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Emitter to Base Voltage",
          "symbol": "VEBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector Current - Continuous",
          "symbol": "IC",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 600,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Base Current - Continuous",
          "symbol": "IB",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector Power Dissipation",
          "symbol": "PC",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 625,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature",
          "symbol": "Tj",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "DC Current Gain",
          "symbol": "hFE(1)",
          "kind": "electrical",
          "unit": "",
          "min": 50,
          "typ": 200,
          "max": 400,
          "conditions": "VCE=5.0V IC=10mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "DC Current Gain",
          "symbol": "hFE(2)",
          "kind": "electrical",
          "unit": "",
          "min": 20,
          "typ": 160,
          "max": null,
          "conditions": "VCE=5.0V IC=50mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "DC Current Gain",
          "symbol": "hFE(3)",
          "kind": "electrical",
          "unit": "",
          "min": 40,
          "typ": 190,
          "max": null,
          "conditions": "VCE=5.0V IC=1.0mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector to Emitter Saturation Voltage",
          "symbol": "VCE(sat) (1)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.06,
          "max": 0.15,
          "conditions": "IC=10mA IB=1.0mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector to Emitter Saturation Voltage",
          "symbol": "VCE(sat) (2)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.09,
          "max": 0.3,
          "conditions": "IC=50mA IB=5.0mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Base to Emitter Saturation Voltage",
          "symbol": "VBE(sat) (1)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.7,
          "max": 1,
          "conditions": "IC=10mA IB=1.0mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Base to Emitter Saturation Voltage",
          "symbol": "VBE(sat) (2)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.8,
          "max": 1,
          "conditions": "IC=50mA IB=5.0mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Base to Emitter Voltage",
          "symbol": "VBE",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.68,
          "max": 0.75,
          "conditions": "VCE=5.0V IC=10mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector Cut-Off Current",
          "symbol": "ICBO",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "VCB=180V IE=0",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Emitter Cut-Off Current",
          "symbol": "IEBO",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "VEB=6.0V IC=0",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Current Gain Bandwidth Product",
          "symbol": "fT",
          "kind": "electrical",
          "unit": "MHz",
          "min": 50,
          "typ": 110,
          "max": null,
          "conditions": "VCE=10V IC=10mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Capacitance",
          "symbol": "Cob",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 2.2,
          "max": 5,
          "conditions": "VCB=10V IE=0 f=1.0MHz",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Turn On Time",
          "symbol": "ton",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "IC=100mA IB1=-IB2=10mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Turn Off Time",
          "symbol": "toff",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IC=100mA IB1=-IB2=10mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Time",
          "symbol": "tstg",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "IC=100mA IB1=-IB2=10mA",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
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  "sections": [
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    "breadcrumbs",
    "info"
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  "discovery_triggers": [
    "2n5551-b"
  ],
  "discovery_pitch": "2N5551-B (Foshan Blue Rocket Elec) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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    "2n5551-b-etched.glb"
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  "visibility": {
    "public": true
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}