DTC144EM

{
  "slug": "dtc144em",
  "version": "0.1.0",
  "type": "component",
  "description": "TECH PUBLIC Digital Transistors, SOT-723. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "transistors-thyristors",
    "dtc144em",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "dtc144em.kicad_sym",
    "dtc144em.kicad_mod",
    "dtc144em.glb",
    "dtc144em.step",
    "dtc144em.lbr",
    "docs/hero.png",
    "docs/dtc144em-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "dtc144em-hero.glb",
    "dtc144em-hero.overlay.json"
  ],
  "component": {
    "mpn": "DTC144EM",
    "manufacturer": "TECH PUBLIC",
    "package": "SOT-723",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Digital Transistors",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590903254911819776",
    "parts": {
      "symbol": "dtc144em.kicad_sym",
      "footprint": "dtc144em.kicad_mod",
      "model_3d": "dtc144em-hero.glb",
      "model_3d_plain": "dtc144em.glb",
      "model_3d_step": "dtc144em-etched.step",
      "model_3d_step_plain": "dtc144em.step",
      "lbr": "dtc144em.lbr"
    },
    "distributor_links": {
      "lcsc": "C5311016"
    },
    "distributor_check": {
      "checked_at": "2026-10-10T01:09:38Z",
      "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 (input) of the NPN digital transistor, connected through the built-in series resistor R1 with base-emitter resistor R2."
      },
      {
        "number": "2",
        "name": "EMITTER",
        "type": "power_in",
        "description": "Emitter (ground) of the transistor; connects to circuit ground."
      },
      {
        "number": "3",
        "name": "COLLECTOR",
        "type": "output",
        "description": "Collector (output) of the transistor; VCEO and VCBO rated 50Vdc and IC max 100mAdc."
      }
    ],
    "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: Only pages 1-3 were read; the pin table was on page 1 and unambiguous. Pages 4-12 (likely package ou; Emitter is labelled '(GROUND)' in the datasheet; it is typed power_in per the GND convention, though",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 12,
        "cost_usd": 0.2023,
        "at": "2026-10-10T01:08:28"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590903254911819776",
        "pages": 13,
        "sha256": "2ca9375d45cf8013",
        "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": "dtc144em.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": "e5abdabff0151e98fda2e25284aad963c4e30b6969aaf705be240eca29347fa8",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "dtc144em-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": "e0a6007cb936ff7c93377680d03d0ff9cba51daa0eee21acfc3c42c4d139d43d",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}