ULN2803AN

{
  "slug": "uln2803an",
  "version": "0.1.0",
  "type": "component",
  "description": "lingxingic Darlington Transistor Arrays, DIP-18. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "transistors-thyristors",
    "uln2803an",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "uln2803an.kicad_sym",
    "uln2803an.kicad_mod",
    "uln2803an.glb",
    "uln2803an.step",
    "uln2803an.lbr",
    "docs/hero.png",
    "docs/uln2803an-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "uln2803an-hero.glb",
    "uln2803an-hero.overlay.json",
    "uln2803an-etched.glb"
  ],
  "component": {
    "mpn": "ULN2803AN",
    "manufacturer": "lingxingic",
    "package": "DIP-18",
    "pin_count": 18,
    "category": "Transistors/Thyristors",
    "subcategory": "Darlington Transistor Arrays",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603388820054831104",
    "parts": {
      "symbol": "uln2803an.kicad_sym",
      "footprint": "uln2803an.kicad_mod",
      "model_3d": "uln2803an-hero.glb",
      "model_3d_plain": "uln2803an-etched.glb",
      "model_3d_step": "uln2803an-etched.step",
      "model_3d_step_plain": "uln2803an.step",
      "lbr": "uln2803an.lbr"
    },
    "distributor_links": {
      "lcsc": "C32710671",
      "digikey": "5536-ULN2803AN-ND",
      "mouser": "595-ULN2803AN"
    },
    "distributor_check": {
      "checked_at": "2026-10-15T11:55:06Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "5536-ULN2803AN-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-ULN2803AN",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1B",
        "type": "input",
        "description": "Base input of Darlington channel 1, with a 2.7 kΩ series base resistor; absolute maximum input voltage is -0.5 to 30 V and recommended input voltage is 0 to 24 V, compatible with TTL/CMOS logic."
      },
      {
        "number": "2",
        "name": "2B",
        "type": "input",
        "description": "Base input of Darlington channel 2, with a 2.7 kΩ series base resistor; absolute maximum input voltage is -0.5 to 30 V and recommended input voltage is 0 to 24 V, compatible with TTL/CMOS logic."
      },
      {
        "number": "3",
        "name": "3B",
        "type": "input",
        "description": "Base input of Darlington channel 3, with a 2.7 kΩ series base resistor; absolute maximum input voltage is -0.5 to 30 V and recommended input voltage is 0 to 24 V, compatible with TTL/CMOS logic."
      },
      {
        "number": "4",
        "name": "4B",
        "type": "input",
        "description": "Base input of Darlington channel 4, with a 2.7 kΩ series base resistor; absolute maximum input voltage is -0.5 to 30 V and recommended input voltage is 0 to 24 V, compatible with TTL/CMOS logic."
      },
      {
        "number": "5",
        "name": "5B",
        "type": "input",
        "description": "Base input of Darlington channel 5, with a 2.7 kΩ series base resistor; absolute maximum input voltage is -0.5 to 30 V and recommended input voltage is 0 to 24 V, compatible with TTL/CMOS logic."
      },
      {
        "number": "6",
        "name": "6B",
        "type": "input",
        "description": "Base input of Darlington channel 6, with a 2.7 kΩ series base resistor; absolute maximum input voltage is -0.5 to 30 V and recommended input voltage is 0 to 24 V, compatible with TTL/CMOS logic."
      },
      {
        "number": "7",
        "name": "7B",
        "type": "input",
        "description": "Base input of Darlington channel 7, with a 2.7 kΩ series base resistor; absolute maximum input voltage is -0.5 to 30 V and recommended input voltage is 0 to 24 V, compatible with TTL/CMOS logic."
      },
      {
        "number": "8",
        "name": "8B",
        "type": "input",
        "description": "Base input of Darlington channel 8, with a 2.7 kΩ series base resistor; absolute maximum input voltage is -0.5 to 30 V and recommended input voltage is 0 to 24 V, compatible with TTL/CMOS logic."
      },
      {
        "number": "9",
        "name": "E",
        "type": "power_in",
        "description": "Emitter/ground pin (地) of the Darlington array, which is the ground reference for all channels."
      },
      {
        "number": "10",
        "name": "COM",
        "type": "power_in",
        "description": "Common terminal for the internal clamp diodes; COM voltage is limited to 50 V, and the datasheet requires it to be connected to the supply to protect the device from overshoot voltage."
      },
      {
        "number": "11",
        "name": "8C",
        "type": "output",
        "description": "Open-collector Darlington output of channel 8 with internal clamp diode; collector-emitter voltage is limited to -0.5 to 50 V and single-channel output current to 500 mA."
      },
      {
        "number": "12",
        "name": "7C",
        "type": "output",
        "description": "Open-collector Darlington output of channel 7 with internal clamp diode; collector-emitter voltage is limited to -0.5 to 50 V and single-channel output current to 500 mA."
      },
      {
        "number": "13",
        "name": "6C",
        "type": "output",
        "description": "Open-collector Darlington output of channel 6 with internal clamp diode; collector-emitter voltage is limited to -0.5 to 50 V and single-channel output current to 500 mA."
      },
      {
        "number": "14",
        "name": "5C",
        "type": "output",
        "description": "Open-collector Darlington output of channel 5 with internal clamp diode; collector-emitter voltage is limited to -0.5 to 50 V and single-channel output current to 500 mA."
      },
      {
        "number": "15",
        "name": "4C",
        "type": "output",
        "description": "Open-collector Darlington output of channel 4 with internal clamp diode; collector-emitter voltage is limited to -0.5 to 50 V and single-channel output current to 500 mA."
      },
      {
        "number": "16",
        "name": "3C",
        "type": "output",
        "description": "Open-collector Darlington output of channel 3 with internal clamp diode; collector-emitter voltage is limited to -0.5 to 50 V and single-channel output current to 500 mA."
      },
      {
        "number": "17",
        "name": "2C",
        "type": "output",
        "description": "Open-collector Darlington output of channel 2 with internal clamp diode; collector-emitter voltage is limited to -0.5 to 50 V and single-channel output current to 500 mA."
      },
      {
        "number": "18",
        "name": "1C",
        "type": "output",
        "description": "Open-collector Darlington output of channel 1 with internal clamp diode; collector-emitter voltage is limited to -0.5 to 50 V and single-channel output current to 500 mA."
      }
    ],
    "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: Pin 9 (E) is labeled 地 (ground) and pin 10 (COM) is labeled 公共端 (common) with no explicit pin type; ; Outputs are open-collector Darlington outputs; KiCad class 'output' is used since no open-collector ; The datasheet's ordering table lists DIP18 packaging (20 pcs/tube) and the part marking ULN2803AN(LX"
        ],
        "pages_sent": 13,
        "cost_usd": 0.0496,
        "at": "2026-10-15T11:54:50"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603388820054831104",
        "pages": 13,
        "sha256": "4aadf36f2e1e5a70",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 18,
        "described": 18,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "uln2803an.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          22.86,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "c9e1ad672f0603e5818e9d0329669eb09ec9fa91bae3fdad8cdfa245e05c3b5f",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "uln2803an-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "2b7bef5d9b617e7951ede358cc36a648d2778e62f5ae112b2a9cbacaa6aa453d",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}