HE8550G-E-AE3-R

{
  "slug": "he8550g-e-ae3-r",
  "version": "0.1.0",
  "type": "component",
  "description": "UTC Unisonic Tech Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "transistors-thyristors",
    "he8550g-e-ae3-r",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "he8550g-e-ae3-r.kicad_sym",
    "he8550g-e-ae3-r.kicad_mod",
    "he8550g-e-ae3-r.glb",
    "he8550g-e-ae3-r.step",
    "he8550g-e-ae3-r.lbr",
    "docs/hero.png",
    "docs/he8550g-e-ae3-r-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "he8550g-e-ae3-r-hero.glb",
    "he8550g-e-ae3-r-hero.overlay.json",
    "he8550g-e-ae3-r-etched.glb"
  ],
  "component": {
    "mpn": "HE8550G-E-AE3-R",
    "manufacturer": "UTC Unisonic Tech",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603163525506482176",
    "parts": {
      "symbol": "he8550g-e-ae3-r.kicad_sym",
      "footprint": "he8550g-e-ae3-r.kicad_mod",
      "model_3d": "he8550g-e-ae3-r-hero.glb",
      "model_3d_plain": "he8550g-e-ae3-r-etched.glb",
      "model_3d_step": "he8550g-e-ae3-r-etched.step",
      "model_3d_step_plain": "he8550g-e-ae3-r.step",
      "lbr": "he8550g-e-ae3-r.lbr"
    },
    "distributor_links": {
      "lcsc": "C2900472"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T09:55:31Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "B",
        "type": "input",
        "description": "Base terminal of the PNP transistor (pin assignment B on the SOT-23 variant, per the ordering table); the datasheet gives no pin-specific electrical limit for the base, and the device ratings are VEBO -6 V and VCBO -40 V."
      },
      {
        "number": "2",
        "name": "E",
        "type": "passive",
        "description": "Emitter terminal of the PNP transistor (pin assignment E on the SOT-23 variant, per the ordering table); the datasheet gives no pin-specific electrical limit for the emitter, and the device rating is VEBO -6 V."
      },
      {
        "number": "3",
        "name": "C",
        "type": "passive",
        "description": "Collector terminal of the PNP transistor (pin assignment C on the SOT-23 variant, per the ordering table); the device is rated for collector current IC -1.5 A, VCEO -25 V, and total collector dissipation 350 mW in SOT-23."
      }
    ],
    "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 ordering table lists the SOT-23 pin assignment as B, E, C for pins 1, 2, 3 (ordering row HE8550G; The datasheet does not give pin-specific electrical limits. The electrical ratings on page 2 (VCBO, ; Pin types are inferred: the datasheet does not classify pins. Base is marked input and emitter and c"
        ],
        "pages_sent": 4,
        "cost_usd": 0.0257,
        "at": "2026-10-19T09:55:07"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603163525506482176",
        "pages": 4,
        "sha256": "d49dcb27a4d69e2d",
        "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": "he8550g-e-ae3-r.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3.0,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "he8550g-e-ae3-r-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3.0,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "1f47c0757cda58b1fed0b16a4ce31358893f15a64603cd12cff248b203c0c381",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}