LD1117S50TR

{
  "schema_version": 1,
  "type": "component",
  "slug": "ld1117s50tr",
  "title": "LD1117S50TR",
  "brief": "STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "ld1117s50tr"
  ],
  "component": {
    "mpn": "LD1117S50TR",
    "manufacturer": "STMicroelectronics",
    "package": "SOT-223-3",
    "pin_count": 4,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://www.st.com/resource/en/datasheet/ld1117s50tr.pdf",
    "parts": {
      "symbol": "ld1117s50tr.kicad_sym",
      "footprint": "ld1117s50tr.kicad_mod",
      "model_3d": "ld1117s50tr-etched.glb",
      "model_3d_plain": "ld1117s50tr.glb",
      "model_3d_step": "ld1117s50tr-etched.step",
      "model_3d_step_plain": "ld1117s50tr.step",
      "lbr": "ld1117s50tr.lbr"
    },
    "distributor_links": {
      "digikey": "497-6447-2-ND",
      "mouser": "511-LD1117S50",
      "lcsc": "C134077"
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the regulator. Return path for quiescent current and load current."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated 5.0 V output. Requires a minimum 10 µF capacitor to ground for stability. Delivers up to 800 mA (typ. 950 mA) with dropout ~1.1 V at 800 mA. Internally tied to the package TAB."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Unregulated input supply. Operating input voltage up to 15 V DC (18 V max when Iout < 20 mA). A 100 nF input decoupling capacitor is recommended."
      },
      {
        "number": "4",
        "name": "TAB",
        "type": "power_out",
        "description": "Metal tab used for heat dissipation. Electrically connected internally to VOUT - must be treated as VOUT for isolation and routing purposes."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.st.com/resource/en/datasheet/ld1117s50tr.pdf",
        "pages": 44,
        "sha256": "1b80923ec6ca9161",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 4,
        "described": 4,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -3.15,
        -2.3
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-223@sha256:49f22605ecc1fc70",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "ld1117s50tr.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": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ld1117s50tr-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": "7a63ba55514063dbcdfdfe6f9868403267af73cc50c059b6d3a3c680117c3f7f",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "SOT-223-3",
      "Category": "PMIC",
      "Pins": "4"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ld1117s50tr"
  ],
  "discovery_pitch": "LD1117S50TR (STMicroelectronics) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ld1117s50tr.kicad_sym",
    "ld1117s50tr.kicad_mod",
    "ld1117s50tr.glb",
    "ld1117s50tr.step",
    "ld1117s50tr-etched.step",
    "ld1117s50tr.lbr",
    "docs/hero.png",
    "docs/ld1117s50tr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "LD1117S50TR",
      "kind": "packaging"
    },
    {
      "mpn": "LD1117S50TRV50",
      "kind": "packaging"
    },
    {
      "mpn": "LD1117S50TRDT50TR",
      "kind": "packaging"
    },
    {
      "mpn": "LD1117S50TRD50TR",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-24T23:48:58.116Z"
}