MMST2222A

{
  "slug": "mmst2222a",
  "version": "0.1.0",
  "type": "component",
  "description": "Changjing Bipolar (BJT), SOT-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "transistors-thyristors",
    "mmst2222a",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mmst2222a.kicad_sym",
    "mmst2222a.kicad_mod",
    "mmst2222a.glb",
    "mmst2222a.step",
    "mmst2222a.lbr",
    "docs/hero.png",
    "docs/mmst2222a-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mmst2222a-hero.glb",
    "mmst2222a-hero.overlay.json"
  ],
  "component": {
    "mpn": "MMST2222A",
    "manufacturer": "Changjing",
    "package": "SOT-323",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589041684440600576",
    "parts": {
      "symbol": "mmst2222a.kicad_sym",
      "footprint": "mmst2222a.kicad_mod",
      "model_3d": "mmst2222a-hero.glb",
      "model_3d_plain": "mmst2222a.glb",
      "model_3d_step": "mmst2222a-etched.step",
      "model_3d_step_plain": "mmst2222a.step",
      "lbr": "mmst2222a.lbr"
    },
    "distributor_links": {
      "lcsc": "C2910239"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T17:34:20Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BASE",
        "type": "input",
        "description": "Base terminal of the NPN transistor; the datasheet gives no separate pin-level limit, only the device maximum ratings (VCBO 75 V, VEBO 6 V, IC 600 mA continuous, PC 200 mW)."
      },
      {
        "number": "2",
        "name": "EMITTER",
        "type": "passive",
        "description": "Emitter terminal of the NPN transistor; the datasheet gives no separate pin-level limit, only the device maximum ratings (VCEO 40 V, IC 600 mA continuous)."
      },
      {
        "number": "3",
        "name": "COLLECTOR",
        "type": "passive",
        "description": "Collector terminal of the NPN transistor; the datasheet gives no separate pin-level limit, only the device maximum ratings (VCBO 75 V, VCEO 40 V, IC 600 mA continuous, PC 200 mW)."
      }
    ],
    "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 lists only the pin names (1. BASE, 2. EMITTER, 3. COLLECTOR) for SOT-323 with no per-p; The datasheet's SOT-323 pin list is given as text only, without a pin-position drawing. Pin numberin"
        ],
        "pages_sent": 4,
        "cost_usd": 0.0248,
        "at": "2026-10-09T17:32:13"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589041684440600576",
        "pages": 4,
        "sha256": "65e8da25071cbe64",
        "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": "mmst2222a.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          2.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "acbf75a28fe41aa90efb38cd2b78220968d6eb6ebae1625dfd532dbeb268fece",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mmst2222a-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "91fc7f72e4394d75e2f193663fdaf58cd53c582733f20a84dd395962c98f3e41",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}