ULN2003A

{
  "schema_version": 1,
  "type": "component",
  "slug": "uln2003a",
  "title": "ULN2003A",
  "brief": "TI 7-channel Darlington array, SOIC-16. 500 mA/50 V per channel, freewheeling diodes, TTL inputs. Datasheet-verified.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "driver",
    "darlington-array",
    "relay-driver",
    "soic-16",
    "texas-instruments"
  ],
  "component": {
    "mpn": "ULN2003A",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Driver",
    "subcategory": "Darlington transistor array",
    "datasheet": "https://www.ti.com/lit/ds/symlink/uln2003a.pdf",
    "parts": {
      "symbol": "uln2003a.kicad_sym",
      "footprint": "uln2003a.kicad_mod",
      "model_3d": "uln2003a-etched.glb",
      "model_3d_plain": "uln2003a.glb",
      "model_3d_step": "uln2003a-etched.step",
      "model_3d_step_plain": "uln2003a.step",
      "lbr": "uln2003a.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "1B",
        "type": "input",
        "description": "Channel 1 Darlington base input. Drives channel 1 through an internal 2.7 kΩ series base resistor; TTL/5 V CMOS compatible. VI(on) ≤ 2.4 V typical for IC = 200 mA."
      },
      {
        "number": "2",
        "name": "2B",
        "type": "input",
        "description": "Channel 2 Darlington base input. Drives channel 2 through the internal 2.7 kΩ base resistor; TTL/5 V CMOS compatible."
      },
      {
        "number": "3",
        "name": "3B",
        "type": "input",
        "description": "Channel 3 Darlington base input. Drives channel 3 through the internal 2.7 kΩ base resistor; TTL/5 V CMOS compatible."
      },
      {
        "number": "4",
        "name": "4B",
        "type": "input",
        "description": "Channel 4 Darlington base input. Drives channel 4 through the internal 2.7 kΩ base resistor; TTL/5 V CMOS compatible."
      },
      {
        "number": "5",
        "name": "5B",
        "type": "input",
        "description": "Channel 5 Darlington base input. Drives channel 5 through the internal 2.7 kΩ base resistor; TTL/5 V CMOS compatible."
      },
      {
        "number": "6",
        "name": "6B",
        "type": "input",
        "description": "Channel 6 Darlington base input. Drives channel 6 through the internal 2.7 kΩ base resistor; TTL/5 V CMOS compatible."
      },
      {
        "number": "7",
        "name": "7B",
        "type": "input",
        "description": "Channel 7 Darlington base input. Drives channel 7 through the internal 2.7 kΩ base resistor; TTL/5 V CMOS compatible."
      },
      {
        "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 pin."
      },
      {
        "number": "9",
        "name": "COM",
        "type": "power_in",
        "description": "Common-cathode node for the seven integrated flyback (freewheeling) clamp diodes. Connect to the positive supply of the inductive load (relay/solenoid/motor supply, up to 50 V) to clamp inductive kickback."
      },
      {
        "number": "10",
        "name": "7C",
        "type": "output",
        "description": "Channel 7 Darlington open-collector output. Sinks up to 500 mA per channel to the common emitter (pin 8); VCE(sat) ≈ 1 V at 200 mA. Withstands 50 V off-state."
      },
      {
        "number": "11",
        "name": "6C",
        "type": "output",
        "description": "Channel 6 Darlington open-collector output. Sinks up to 500 mA; 50 V off-state rating."
      },
      {
        "number": "12",
        "name": "5C",
        "type": "output",
        "description": "Channel 5 Darlington open-collector output. Sinks up to 500 mA; 50 V off-state rating."
      },
      {
        "number": "13",
        "name": "4C",
        "type": "output",
        "description": "Channel 4 Darlington open-collector output. Sinks up to 500 mA; 50 V off-state rating."
      },
      {
        "number": "14",
        "name": "3C",
        "type": "output",
        "description": "Channel 3 Darlington open-collector output. Sinks up to 500 mA; 50 V off-state rating."
      },
      {
        "number": "15",
        "name": "2C",
        "type": "output",
        "description": "Channel 2 Darlington open-collector output. Sinks up to 500 mA; 50 V off-state rating."
      },
      {
        "number": "16",
        "name": "1C",
        "type": "output",
        "description": "Channel 1 Darlington open-collector output. Sinks up to 500 mA; 50 V off-state rating."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/uln2003a.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"
    }
  },
  "metadata": {
    "specs": {
      "Type": "7-channel Darlington transistor array",
      "Output current": "500 mA per channel",
      "Output voltage": "50 V",
      "Inputs": "TTL / 5 V CMOS (2.7 kΩ series base R)",
      "Inductive loads": "Common-cathode freewheeling diodes (COM)",
      "Channels": "7",
      "Package": "SOIC-16",
      "Body (L×W×H)": "9.9 × 3.9 × 1.75 mm"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "uln2003a",
    "darlington array",
    "relay driver ic",
    "stepper motor driver uln"
  ],
  "discovery_pitch": "ULN2003A 7-channel Darlington transistor array (SOIC-16) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "uln2003a.kicad_sym",
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    "uln2003a.lbr",
    "docs/hero.png",
    "docs/uln2003a-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "uln2003a-etched.step"
  ],
  "variants": [
    {
      "mpn": "ULN2003AD (SOIC-16, tube)",
      "kind": "packaging"
    },
    {
      "mpn": "ULN2003ADR (SOIC-16, tape & reel)",
      "kind": "packaging"
    }
  ]
}