RT9161A-33GX

{
  "slug": "rt9161a-33gx",
  "version": "0.1.0",
  "type": "component",
  "description": "Richtek Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "rt9161a-33gx",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "rt9161a-33gx.kicad_sym",
    "rt9161a-33gx.kicad_mod",
    "rt9161a-33gx.glb",
    "rt9161a-33gx.step",
    "rt9161a-33gx.lbr",
    "docs/hero.png",
    "docs/rt9161a-33gx-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "rt9161a-33gx-hero.glb",
    "rt9161a-33gx-hero.overlay.json",
    "rt9161a-33gx-etched.glb"
  ],
  "component": {
    "mpn": "RT9161A-33GX",
    "manufacturer": "Richtek Tech",
    "package": "SOT-89",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/8d26fa97552bade108833d7188f477f8.pdf",
    "parts": {
      "symbol": "rt9161a-33gx.kicad_sym",
      "footprint": "rt9161a-33gx.kicad_mod",
      "model_3d": "rt9161a-33gx-hero.glb",
      "model_3d_plain": "rt9161a-33gx-etched.glb",
      "model_3d_step": "rt9161a-33gx-etched.step",
      "model_3d_step_plain": "rt9161a-33gx.step",
      "lbr": "rt9161a-33gx.lbr"
    },
    "distributor_links": {
      "lcsc": "C22432877"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T19:55:02Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin for the regulator, which the datasheet lists as a ground connection with a 1uF or higher input capacitor and a 10uF output capacitor (ESR of 200mΩ or higher) required between VOUT and GND for stability."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Power input (also the SOT-89 tab, shown as VIN (TAB) in the pin diagram); the datasheet gives an absolute maximum input of -0.3 to 14V and an input voltage range up to 12V, and recommends at least 1uF between VIN and GND to filter input noise."
      },
      {
        "number": "3",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output voltage (fixed 3.3V for the -33 variant); the datasheet requires a 10uF output capacitor with ESR of 200mΩ or higher between VOUT and GND for stability."
      }
    ],
    "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-89 pin diagram text is garbled in the extraction. Pin numbers were mapped to names from the ; The datasheet's pin-function table (page 3) has no per-pin numbers and gives only short functional l; The MPN RT9161A-33GX ends in package code X (SOT-89) and lead-plating code G (Green). The ordering i"
        ],
        "pages_sent": 12,
        "cost_usd": 0.0487,
        "at": "2026-10-28T19:54:54"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/8d26fa97552bade108833d7188f477f8.pdf",
        "pages": 12,
        "sha256": "f9ed17ff387f5129",
        "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": [
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        "file": "rt9161a-33gx.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.5,
          1.52
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "844c0bb504d0c383535d9845c6376fe7a4053241a2ede8d8ef694df3fcfc37c8",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "rt9161a-33gx-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.5,
          1.52
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "26c364f453e0e30e7819aa1b47bd3b41a5439c302d0b49deda3846f5d3a34210",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "SOT-89",
      "source_page": 10,
      "D": {
        "nom_mm": 4.495,
        "range_mm": [
          4.394,
          4.597
        ]
      },
      "E1": {
        "nom_mm": 2.49,
        "range_mm": [
          2.388,
          2.591
        ]
      },
      "E": {
        "nom_mm": 4.09,
        "range_mm": [
          3.937,
          4.242
        ]
      },
      "e": {
        "nom_mm": 1.498,
        "range_mm": [
          1.448,
          1.549
        ]
      },
      "A": {
        "nom_mm": 1.498,
        "range_mm": [
          1.397,
          1.6
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "rt9161a-33gx.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}