LT1129CST-3.3#PBF

{
  "slug": "lt1129cst-3-3-pbf",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices Linear Voltage Regulators (LDO), SOT-223-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management ics",
    "lt1129cst-3.3#pbf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lt1129cst-3-3-pbf.kicad_sym",
    "lt1129cst-3-3-pbf.kicad_mod",
    "lt1129cst-3-3-pbf.glb",
    "lt1129cst-3-3-pbf.step",
    "lt1129cst-3-3-pbf.lbr",
    "docs/hero.png",
    "docs/lt1129cst-3-3-pbf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lt1129cst-3-3-pbf-hero.glb",
    "lt1129cst-3-3-pbf-hero.overlay.json",
    "lt1129cst-3-3-pbf-etched.glb"
  ],
  "component": {
    "mpn": "LT1129CST-3.3#PBF",
    "manufacturer": "Analog Devices",
    "package": "SOT-223-3",
    "pin_count": 3,
    "category": "Power Management ICs",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/112935ff.pdf",
    "parts": {
      "symbol": "lt1129cst-3-3-pbf.kicad_sym",
      "footprint": "lt1129cst-3-3-pbf.kicad_mod",
      "model_3d": "lt1129cst-3-3-pbf-hero.glb",
      "model_3d_plain": "lt1129cst-3-3-pbf-etched.glb",
      "model_3d_step": "lt1129cst-3-3-pbf-etched.step",
      "model_3d_step_plain": "lt1129cst-3-3-pbf.step",
      "lbr": "lt1129cst-3-3-pbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C661293",
      "digikey": "LT1129CST-3.3#PBF-ND",
      "mouser": "584-LT1129CST-3.3PBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-31T03:49:10Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LT1129CST-3.3#PBF-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-LT1129CST-3.3PBF",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Input pin supplying power to the device; withstands reverse voltages (absolute maximum ±30V) and should be bypassed with 1μF to 10μF if more than 6 inches from the main input filter capacitor."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin, also connected to the package tab (tab is GND)."
      },
      {
        "number": "3",
        "name": "OUTPUT",
        "type": "power_out",
        "description": "Regulated 3.3V output supplying up to 700mA to the load, which requires an output capacitor (stable with 3.3μF) to prevent oscillation."
      }
    ],
    "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 SOT-223 figure on page 2 prints the numbers '3 2 1' and the names 'OUTPUT GND VIN' in an order t; The tab is labeled 'IS GND' in the datasheet. It is not a numbered pin and is not included in the pi"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0793,
        "at": "2026-10-31T03:49:02"
      },
      "datasheet": {
        "url": "https://www.analog.com/media/en/technical-documentation/data-sheets/112935ff.pdf",
        "pages": 16,
        "sha256": "3bd8354699849a4f",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lt1129cst-3-3-pbf.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          6.5,
          1.7
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "77ad6dbacc493cb619c728f26d2ddcf461eb0feb6b977b47d01d51e67016f654",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lt1129cst-3-3-pbf-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          6.5,
          1.7
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "9898c54744c9215db7a2c7979f45f90d1b0c5ab3eb91de94ab170cd89f91ac7f",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "ST3 (SOT-223), LTC DWG # 05-08-1630",
      "source_page": 15,
      "D": {
        "nom_mm": 6.505,
        "range_mm": [
          6.3,
          6.71
        ]
      },
      "E1": {
        "nom_mm": 3.505,
        "range_mm": [
          3.3,
          3.71
        ]
      },
      "E": {
        "nom_mm": 7.0,
        "range_mm": [
          6.7,
          7.3
        ]
      },
      "e": {
        "nom_mm": 2.3,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.8,
        "range_mm": [
          null,
          1.8
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "lt1129cst-3-3-pbf.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}