LM4050QAEM3-4.1

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm4050qaem3-4-1",
  "title": "LM4050QAEM3-4.1",
  "brief": "Texas Instruments Voltage Reference, SOT-23-3. 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",
    "power management (pmic)",
    "lm4050qaem3-4.1",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "LM4050QAEM3-4.1",
    "manufacturer": "Texas Instruments",
    "package": "SOT-23-3",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm4050-n-q1",
    "parts": {
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      "footprint": "lm4050qaem3-4-1.kicad_mod",
      "model_3d": "lm4050qaem3-4-1-hero.glb",
      "model_3d_plain": "lm4050qaem3-4-1.glb",
      "model_3d_step": "lm4050qaem3-4-1-etched.step",
      "model_3d_step_plain": "lm4050qaem3-4-1.step",
      "lbr": "lm4050qaem3-4-1.lbr"
    },
    "distributor_links": {
      "lcsc": "C2157744"
    },
    "distributor_check": {
      "checked_at": "2026-10-10T16:06:37Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Cathode",
        "type": "bidirectional",
        "description": "Shunt current and input voltage pin (datasheet label 负极, I/O); the reference regulates the voltage between cathode and anode, and the current fed through Rs sets its operating point, which must stay within the 15 mA maximum operating current for all versions."
      },
      {
        "number": "2",
        "name": "Anode",
        "type": "output",
        "description": "General-purpose pin, typically connected to ground (datasheet label 正极, O); it has a parasitic Schottky diode to pin 3, so pin 3 must be floating or tied to this pin."
      },
      {
        "number": "3",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection; it must be left floating or connected to pin 2 (anode), and TI recommends connecting it to the anode in applications with high EMI or significant high-frequency switching noise."
      }
    ],
    "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 pinout (Figure 4-1 and Table 4-1, DBZ 3-pin SOT-23) is shared by all LM4050-N/-Q1 vari; KiCad type mapping is a judgment call. The datasheet labels pin 1 as I/O and pin 2 as O. Pin 2 is us; Electrical characteristics for the 4.1 V option (section 5.7) are not in the supplied pages, so no 4"
        ],
        "pages_sent": 20,
        "cost_usd": 0.1204,
        "at": "2026-10-10T16:06:21"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm4050-n-q1",
        "pages": 47,
        "sha256": "02a99aa1f022863b",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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    "viewers": {
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      "footprint": "viewers/footprint.html"
    },
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        "file": "lm4050qaem3-4-1.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": "16964b14f93e6c778288a0c110b35f670fab733109c26f0da7dfc07cc3350040",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm4050qaem3-4-1-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,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "5387b156b1a8fad65d0ed19cfe2b07c72ae4a6f4312171dc069c5fa6c354138f",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOT-23-3",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lm4050qaem3-4.1"
  ],
  "discovery_pitch": "LM4050QAEM3-4.1 (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "lm4050qaem3-4-1.step",
    "lm4050qaem3-4-1.lbr",
    "docs/hero.png",
    "docs/lm4050qaem3-4-1-datasheet.pdf",
    "viewers/symbol.html",
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    "lm4050qaem3-4-1-hero.overlay.json"
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  "visibility": {
    "public": true
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}