MMBTA55

{
  "schema_version": 1,
  "type": "component",
  "slug": "mmbta55",
  "title": "MMBTA55",
  "brief": "hongjiacheng 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": [
    "component",
    "transistors-thyristors",
    "mmbta55",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "MMBTA55",
    "manufacturer": "hongjiacheng",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8564879594475593728",
    "parts": {
      "symbol": "mmbta55.kicad_sym",
      "footprint": "mmbta55.kicad_mod",
      "model_3d": "mmbta55-hero.glb",
      "model_3d_plain": "mmbta55.glb",
      "model_3d_step": "mmbta55-etched.step",
      "model_3d_step_plain": "mmbta55.step",
      "lbr": "mmbta55.lbr"
    },
    "distributor_links": {
      "lcsc": "C41375115",
      "mouser": "512-MMBTA55"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T03:55:41Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": "512-MMBTA55",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "B",
        "type": "passive",
        "description": "Base terminal of the PNP transistor; base-emitter saturation voltage is specified at IC=-10mA, VCE=-1.0V with a maximum of -1.2V."
      },
      {
        "number": "2",
        "name": "E",
        "type": "passive",
        "description": "Emitter terminal of the PNP transistor; the emitter-base voltage rating VEBO is -4.0V with emitter-base cut-off current IEBO limited to -100nA at VEB=-4.0V."
      },
      {
        "number": "3",
        "name": "C",
        "type": "passive",
        "description": "Collector terminal of the PNP transistor; rated for a collector-base voltage VCBO of -60V, collector-emitter voltage VCEO of -60V, and collector current IC of -500mA."
      }
    ],
    "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 no printed pin-number table for the SOT-23 package. The pin assignment (1=B, 2=E; Pin types are KiCad ERC classes chosen for a bipolar transistor terminal. The datasheet does not spe"
        ],
        "pages_sent": 3,
        "cost_usd": 0.0282,
        "at": "2026-10-09T03:54:08"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8564879594475593728",
        "pages": 3,
        "sha256": "b5c449d097c0b4b4",
        "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": "mmbta55.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": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mmbta55-etched.step",
        "role": "eda",
        "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": "ce65c0430f9802af26f2b7b6bb7fc24baba496d49a6776874fcb6f8b6213e88e",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "hongjiacheng",
      "Package": "SOT-23",
      "Category": "Transistors/Thyristors",
      "Pins": "3"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "mmbta55"
  ],
  "discovery_pitch": "MMBTA55 (hongjiacheng) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mmbta55.kicad_sym",
    "mmbta55.kicad_mod",
    "mmbta55.glb",
    "mmbta55.step",
    "mmbta55.lbr",
    "docs/hero.png",
    "docs/mmbta55-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mmbta55-hero.glb",
    "mmbta55-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}