MMBT3904M-JSM

{
  "slug": "mmbt3904m-jsm",
  "version": "0.1.0",
  "type": "component",
  "description": "JSMSEMI Bipolar (BJT), SOT-723. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "transistors-thyristors",
    "mmbt3904m-jsm",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mmbt3904m-jsm.kicad_sym",
    "mmbt3904m-jsm.kicad_mod",
    "mmbt3904m-jsm.glb",
    "mmbt3904m-jsm.step",
    "mmbt3904m-jsm.lbr",
    "docs/hero.png",
    "docs/mmbt3904m-jsm-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mmbt3904m-jsm-hero.glb",
    "mmbt3904m-jsm-hero.overlay.json"
  ],
  "component": {
    "mpn": "MMBT3904M-JSM",
    "manufacturer": "JSMSEMI",
    "package": "SOT-723",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603353241228746752",
    "parts": {
      "symbol": "mmbt3904m-jsm.kicad_sym",
      "footprint": "mmbt3904m-jsm.kicad_mod",
      "model_3d": "mmbt3904m-jsm-hero.glb",
      "model_3d_plain": "mmbt3904m-jsm.glb",
      "model_3d_step": "mmbt3904m-jsm-etched.step",
      "model_3d_step_plain": "mmbt3904m-jsm.step",
      "lbr": "mmbt3904m-jsm.lbr"
    },
    "distributor_links": {
      "lcsc": "C28642380"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T18:33:23Z",
      "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 of the NPN transistor; emitter-base voltage limited to 6 V (VEBO) and V(BR)EBO min 6 V at IE=10µA."
      },
      {
        "number": "2",
        "name": "EMITTER",
        "type": "passive",
        "description": "Emitter of the NPN transistor; collector current is limited to 0.2 A continuous."
      },
      {
        "number": "3",
        "name": "COLLECTOR",
        "type": "passive",
        "description": "Collector of the NPN transistor; VCBO 60 V, VCEO 40 V, IC 0.2 A continuous maximum."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin numbering is taken from the package image labels (1.BASE, 2.EMITTER, 3.COLLECTOR). Pin types for",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 2,
        "cost_usd": 0.1435,
        "at": "2026-10-09T18:28:52"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603353241228746752",
        "pages": 2,
        "sha256": "9ee05abf3bb88ed6",
        "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": "mmbt3904m-jsm.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          1.5,
          1.2,
          0.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "066a4c64d997846daaa8aef146c8ae46d602106fa9f435543c8a9792ba1c80d6",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mmbt3904m-jsm-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          1.5,
          1.2,
          0.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "4c000a5e4c9e1d13ff1cb4249378885df9af203f21fd9627c4c6a0d851429db8",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}