ULN2004ADR

{
  "schema_version": 1,
  "type": "component",
  "slug": "uln2004adr",
  "title": "ULN2004ADR",
  "brief": "Texas Instruments Darlington Transistor Arrays, SOIC-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "transistors-thyristors",
    "uln2004adr"
  ],
  "component": {
    "mpn": "ULN2004ADR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Transistors/Thyristors",
    "subcategory": "Darlington Transistor Arrays",
    "datasheet": "https://www.ti.com/lit/ds/symlink/uln2004a.pdf",
    "parts": {
      "symbol": "uln2004adr.kicad_sym",
      "footprint": "uln2004adr.kicad_mod",
      "model_3d": "uln2004adr-etched.glb",
      "model_3d_plain": "uln2004adr.glb",
      "model_3d_step": "uln2004adr-etched.step",
      "model_3d_step_plain": "uln2004adr.step",
      "lbr": "uln2004adr.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "1B",
        "type": "input",
        "description": "Channel 1 Darlington base input. CMOS-compatible via internal 10.5 kΩ series base resistor; drives 1C output low when asserted."
      },
      {
        "number": "2",
        "name": "2B",
        "type": "input",
        "description": "Channel 2 Darlington base input. CMOS-compatible via internal 10.5 kΩ series base resistor."
      },
      {
        "number": "3",
        "name": "3B",
        "type": "input",
        "description": "Channel 3 Darlington base input. CMOS-compatible via internal 10.5 kΩ series base resistor."
      },
      {
        "number": "4",
        "name": "4B",
        "type": "input",
        "description": "Channel 4 Darlington base input. CMOS-compatible via internal 10.5 kΩ series base resistor."
      },
      {
        "number": "5",
        "name": "5B",
        "type": "input",
        "description": "Channel 5 Darlington base input. CMOS-compatible via internal 10.5 kΩ series base resistor."
      },
      {
        "number": "6",
        "name": "6B",
        "type": "input",
        "description": "Channel 6 Darlington base input. CMOS-compatible via internal 10.5 kΩ series base resistor."
      },
      {
        "number": "7",
        "name": "7B",
        "type": "input",
        "description": "Channel 7 Darlington base input. CMOS-compatible via internal 10.5 kΩ series base resistor."
      },
      {
        "number": "8",
        "name": "E",
        "type": "power_in",
        "description": "Common emitter shared by all seven Darlington channels; typically tied to ground. All voltage references in the datasheet are with respect to this terminal."
      },
      {
        "number": "9",
        "name": "COM",
        "type": "power_in",
        "description": "Common cathode node for the internal flyback clamp diodes. Must be connected to the load supply (VS) when driving inductive loads to clamp back-EMF; clamp reverse voltage rated 50 V max."
      },
      {
        "number": "10",
        "name": "7C",
        "type": "output",
        "description": "Channel 7 Darlington collector (open-collector, active-low sink). Rated 50 V VCE, 500 mA single-output collector current, VCE(sat) ≈ 1.1 V at 100 mA."
      },
      {
        "number": "11",
        "name": "6C",
        "type": "output",
        "description": "Channel 6 Darlington collector (open-collector, active-low sink). Rated 50 V VCE, 500 mA single-output collector current."
      },
      {
        "number": "12",
        "name": "5C",
        "type": "output",
        "description": "Channel 5 Darlington collector (open-collector, active-low sink). Rated 50 V VCE, 500 mA single-output collector current."
      },
      {
        "number": "13",
        "name": "4C",
        "type": "output",
        "description": "Channel 4 Darlington collector (open-collector, active-low sink). Rated 50 V VCE, 500 mA single-output collector current."
      },
      {
        "number": "14",
        "name": "3C",
        "type": "output",
        "description": "Channel 3 Darlington collector (open-collector, active-low sink). Rated 50 V VCE, 500 mA single-output collector current."
      },
      {
        "number": "15",
        "name": "2C",
        "type": "output",
        "description": "Channel 2 Darlington collector (open-collector, active-low sink). Rated 50 V VCE, 500 mA single-output collector current."
      },
      {
        "number": "16",
        "name": "1C",
        "type": "output",
        "description": "Channel 1 Darlington collector (open-collector, active-low sink). Rated 50 V VCE, 500 mA single-output collector current, VCE(sat) ≈ 1.1 V at 100 mA."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/uln2004a.pdf",
        "pages": 42,
        "sha256": "0151daa4ffa9135f",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "uln2004adr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "uln2004adr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "bfacffe45f733f271a6636f8595b02281a79f2a29916ce38cbcdb5dd1249d57b",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-16",
      "Category": "Transistors/Thyristors",
      "Pins": "16"
    }
  },
  "variants": [
    {
      "mpn": "ULN2004ADR",
      "kind": "packaging"
    },
    {
      "mpn": "ULN2004ADRD",
      "kind": "packaging"
    },
    {
      "mpn": "ULN2004ADRN",
      "kind": "packaging"
    },
    {
      "mpn": "ULN2004ADRNS",
      "kind": "packaging"
    },
    {
      "mpn": "ULN2004ADRPW",
      "kind": "packaging"
    },
    {
      "mpn": "ULN2004ADRPWR",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "uln2004adr"
  ],
  "discovery_pitch": "ULN2004ADR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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    "README.md",
    "uln2004adr.kicad_sym",
    "uln2004adr.kicad_mod",
    "uln2004adr.glb",
    "uln2004adr.step",
    "uln2004adr.lbr",
    "docs/hero.png",
    "docs/uln2004adr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-25T13:44:27.572Z"
}