LM339BIRTER

{
  "slug": "lm339birter",
  "version": "0.1.0",
  "type": "component",
  "description": "TEXAS INSTRUMENTS Global Sourcing Parts, WQFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "global sourcing parts",
    "lm339birter",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm339birter.kicad_sym",
    "lm339birter.kicad_mod",
    "lm339birter.glb",
    "lm339birter.step",
    "lm339birter.lbr",
    "docs/hero.png",
    "docs/lm339birter-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm339birter-hero.glb",
    "lm339birter-hero.overlay.json",
    "lm339birter-etched.glb"
  ],
  "component": {
    "mpn": "LM339BIRTER",
    "manufacturer": "TEXAS INSTRUMENTS",
    "package": "WQFN-16-EP(3x3)",
    "pin_count": 17,
    "category": "Global Sourcing Parts",
    "subcategory": "Global Sourcing Parts",
    "datasheet": "https://www.ti.com.cn/cn/lit/ds/symlink/lm339b.pdf?ts=1737277053887&ref_url=https%253A%252F%252Fwww.ti.com.cn%252Fproduct%252Fcn%252FLM339B",
    "parts": {
      "symbol": "lm339birter.kicad_sym",
      "footprint": "lm339birter.kicad_mod",
      "model_3d": "lm339birter-hero.glb",
      "model_3d_plain": "lm339birter-etched.glb",
      "model_3d_step": "lm339birter-etched.step",
      "model_3d_step_plain": "lm339birter.step",
      "lbr": "lm339birter.lbr"
    },
    "distributor_links": {
      "lcsc": "C33094051"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T21:20:36Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply pin; the LM339B operates from 2 V to 36 V according to the device comparison table."
      },
      {
        "number": "2",
        "name": "IN1–",
        "type": "input",
        "description": "Negative input pin of comparator 2 as labeled in the datasheet; LM339B input pins are rated -0.3 V to 38 V absolute maximum."
      },
      {
        "number": "3",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection; leave floating or connect to GND."
      },
      {
        "number": "4",
        "name": "IN1+",
        "type": "input",
        "description": "Positive input pin of comparator 2 as labeled in the datasheet; LM339B input pins are rated -0.3 V to 38 V absolute maximum."
      },
      {
        "number": "5",
        "name": "IN2–",
        "type": "input",
        "description": "Negative input pin of comparator 1 as labeled in the datasheet; LM339B input pins are rated -0.3 V to 38 V absolute maximum."
      },
      {
        "number": "6",
        "name": "IN2+",
        "type": "input",
        "description": "Positive input pin of comparator 1 as labeled in the datasheet; LM339B input pins are rated -0.3 V to 38 V absolute maximum."
      },
      {
        "number": "7",
        "name": "IN3–",
        "type": "input",
        "description": "Negative input pin of comparator 3; LM339B input pins are rated -0.3 V to 38 V absolute maximum."
      },
      {
        "number": "8",
        "name": "IN3+",
        "type": "input",
        "description": "Positive input pin of comparator 3; LM339B input pins are rated -0.3 V to 38 V absolute maximum."
      },
      {
        "number": "9",
        "name": "IN4–",
        "type": "input",
        "description": "Negative input pin of comparator 4; LM339B input pins are rated -0.3 V to 38 V absolute maximum."
      },
      {
        "number": "10",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection; leave floating or connect to GND."
      },
      {
        "number": "11",
        "name": "IN4+",
        "type": "input",
        "description": "Positive input pin of comparator 4; LM339B input pins are rated -0.3 V to 38 V absolute maximum."
      },
      {
        "number": "12",
        "name": "GND",
        "type": "power_in",
        "description": "Negative supply pin; the exposed thermal pad must be connected directly to this pin."
      },
      {
        "number": "13",
        "name": "OUT4",
        "type": "output",
        "description": "Output pin of comparator 4; LM339B output sink current is limited to 25 mA maximum."
      },
      {
        "number": "14",
        "name": "OUT3",
        "type": "output",
        "description": "Output pin of comparator 3; LM339B output sink current is limited to 25 mA maximum."
      },
      {
        "number": "15",
        "name": "OUT2",
        "type": "output",
        "description": "Output pin of comparator 1 as labeled in the datasheet; LM339B output sink current is limited to 25 mA maximum."
      },
      {
        "number": "16",
        "name": "OUT1",
        "type": "output",
        "description": "Output pin of comparator 2 as labeled in the datasheet; LM339B output sink current is limited to 25 mA maximum."
      },
      {
        "number": "17",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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 datasheet footnote says some manufacturers transpose the names of channels 1 and 2. Pin function; The exposed thermal pad is not numbered in the datasheet (listed as 'PAD'). Its type was set to pass; Pins 3 and 10 are listed as NC (no internal connection), marked unconnected; leave floating or tie t",
          "exposed pad 17 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 14,
        "cost_usd": 0.0995,
        "at": "2026-10-18T21:20:18"
      },
      "datasheet": {
        "url": "https://www.ti.com.cn/cn/lit/ds/symlink/lm339b.pdf?ts=1737277053887&ref_url=https%253A%252F%252Fwww.ti.com.cn%252Fproduct%252Fcn%252FLM339B",
        "pages": 53,
        "sha256": "896cb37f315719c9",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 17,
        "described": 17,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lm339birter.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.0,
          3.0,
          0.785
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3eb81ffac423a66cdcfead8efe56401da171edaf1f2257049aad7b2d3900f6c8",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm339birter-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.0,
          3.0,
          0.785
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "2b778c2239e6364d1863f7eff6dd6e2f72072db3540dfa85b7c1b31ef3c8b690",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}