main
Ray Set visibility: public 6a71c85 3d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "ddtc144eca-7-f",
  "title": "DDTC144ECA-7-F",
  "brief": "Diodes Incorporated Digital Transistors, 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",
    "ddtc144eca-7-f",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "DDTC144ECA-7-F",
    "manufacturer": "Diodes Incorporated",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Transistors",
    "subcategory": "Digital Transistors",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588918614275051520",
    "parts": {
      "symbol": "ddtc144eca-7-f.kicad_sym",
      "footprint": "ddtc144eca-7-f.kicad_mod",
      "model_3d": "ddtc144eca-7-f-hero.glb",
      "model_3d_plain": "ddtc144eca-7-f-etched.glb",
      "model_3d_step": "ddtc144eca-7-f-etched.step",
      "model_3d_step_plain": "ddtc144eca-7-f.step",
      "lbr": "ddtc144eca-7-f.lbr"
    },
    "distributor_links": {
      "lcsc": "C90995"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T12:08:02Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "IN",
        "type": "input",
        "description": "Base input of the built-in bias network (R1 = 47 kΩ nominal for DDTC144ECA); input voltage must stay within -10 V to +40 V relative to pin 2."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground and emitter reference; the supply and input voltage limits are specified relative to this pin."
      },
      {
        "number": "3",
        "name": "OUT",
        "type": "output",
        "description": "Collector output of the NPN pre-biased transistor; supply voltage VCC is rated up to 50 V relative to pin 2 and output current up to 30 mA for DDTC144ECA."
      }
    ],
    "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 schematic pin labels are garbled in the text extraction. Pin-to-function mapping (1=IN, 2=GND, 3; The datasheet covers the DDTC144ECA-7-F as an SOT23 package (Case: SOT23, ordering table lists it as; Pin 3 output-current and input-voltage limits were taken from the per-variant columns in the Absolut"
        ],
        "pages_sent": 5,
        "cost_usd": 0.0436,
        "at": "2026-10-18T12:05:46"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588918614275051520",
        "pages": 5,
        "sha256": "b71e1c1af45adb44",
        "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": "ddtc144eca-7-f.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": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ddtc144eca-7-f-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": "92a97a1d81583b8c8815afa16c5eddb4d9f1ae79ab84e962dce68c371c99fbd6",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Diodes Incorporated",
      "Package": "SOT-23",
      "Category": "Transistors",
      "Pins": "3"
    },
    "appearance": {
      "contacts": {
        "quote": " Terminals: Finish – Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208",
        "page": 1,
        "doc": "ds.pdf",
        "plating": "tin"
      },
      "version": 1,
      "datasheet_sha256": "b71e1c1af45adb44b0229a7e10787a1fdc7f9a3b05c2b407d020290c0ab43ddc"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "b71e1c1af45adb44b0229a7e10787a1fdc7f9a3b05c2b407d020290c0ab43ddc",
      "rows": [
        {
          "name": "Input Voltage (Vl(off))",
          "symbol": "Vl(off)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.5,
          "typ": null,
          "max": 1.1,
          "conditions": "VCC = 5V, IO = 100μA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage (Vl(on))",
          "symbol": "Vl(on)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.9,
          "max": 3,
          "conditions": "VO = 0.3V, IO = 2mA, DDTC144ECA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage (VO(on))",
          "symbol": "VO(on)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.1,
          "max": 0.3,
          "conditions": "IO/Il = 10mA/0.5mA, DDTC144ECA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Current",
          "symbol": "Il",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 0.18,
          "conditions": "VI = 5V, DDTC144ECA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Current (off)",
          "symbol": "IO(off)",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "VCC = 50V, VI = 0V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "DC Current Gain",
          "symbol": "Gl",
          "kind": "electrical",
          "unit": "",
          "min": 68,
          "typ": null,
          "max": null,
          "conditions": "VO = 5V, IO = 5mA, DDTC144ECA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Resistor Tolerance",
          "symbol": "R1",
          "kind": "tolerance",
          "unit": "%",
          "min": -30,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Resistance Ratio Tolerance",
          "symbol": "R2/R1",
          "kind": "tolerance",
          "unit": "%",
          "min": 0.8,
          "typ": 1,
          "max": 1.2,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Resistor R1 (NOM)",
          "symbol": "R1",
          "kind": "electrical",
          "unit": "kΩ",
          "min": null,
          "typ": 47,
          "max": null,
          "conditions": "Nominal value for DDTC144ECA",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage (VI) absolute maximum",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -10,
          "typ": null,
          "max": 40,
          "conditions": "Pin (1) to (2), DDTC144ECA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Supply Voltage",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "Pin (3) to (2)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Current",
          "symbol": "IO",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "DDTC144ECA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Current IC (Max)",
          "symbol": "IC",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation",
          "symbol": "PD",
          "kind": "thermal",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "Note 7, TA=+25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, Junction to Ambient Air",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 625,
          "conditions": "Note 7",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating and Storage Temperature Range",
          "symbol": "TJ, TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ddtc144eca-7-f"
  ],
  "discovery_pitch": "DDTC144ECA-7-F (Diodes Incorporated) 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",
    "ddtc144eca-7-f.kicad_sym",
    "ddtc144eca-7-f.kicad_mod",
    "ddtc144eca-7-f.glb",
    "ddtc144eca-7-f.step",
    "ddtc144eca-7-f.lbr",
    "docs/hero.png",
    "docs/ddtc144eca-7-f-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ddtc144eca-7-f-hero.glb",
    "ddtc144eca-7-f-hero.overlay.json",
    "ddtc144eca-7-f-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}