main
Ray Set visibility: public 94cb982 15d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "sd2350d50b",
  "title": "SD2350D50B",
  "brief": "SHOUDING DC-DC Converters, SOT-89-3. 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 ics",
    "sd2350d50b",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "SD2350D50B",
    "manufacturer": "SHOUDING",
    "package": "SOT-89-3",
    "pin_count": 3,
    "category": "Power Management ICs",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/852ba250153817e5ff477b52a94d93f1.pdf",
    "parts": {
      "symbol": "sd2350d50b.kicad_sym",
      "footprint": "sd2350d50b.kicad_mod",
      "model_3d": "sd2350d50b-hero.glb",
      "model_3d_plain": "sd2350d50b-etched.glb",
      "model_3d_step": "sd2350d50b-etched.step",
      "model_3d_step_plain": "sd2350d50b.step",
      "lbr": "sd2350d50b.lbr"
    },
    "distributor_links": {
      "lcsc": "C521336"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T09:10:08Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Vss",
        "type": "power_in",
        "description": "Ground pin; must be well grounded, otherwise the internal zero potential shifts with switching current and operation becomes unstable."
      },
      {
        "number": "2",
        "name": "OUT",
        "type": "power_out",
        "description": "Boosted output pin; connect the output capacitor (at least 47µF, rated at least 3x the output voltage) with the shortest possible trace."
      },
      {
        "number": "3",
        "name": "Lx",
        "type": "output",
        "description": "Switch pin (Ext drives an external transistor in external-MOS versions) connected to the inductor and Schottky diode; internal switch on-current is 450 mA at VLX=0.4V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pinout table on page 2 gives SOT89 as pin1 Vss, pin2 OUT, pin3 Lx(Ext); this differs from SOT-23; The datasheet does not state pin electrical types. Types were inferred from the functions: Vss as gr; The suffix 50B in the MPN is not explained in the extracted text. The datasheet lists SD2350D50 (5.0"
        ],
        "pages_sent": 9,
        "cost_usd": 0.0537,
        "at": "2026-10-23T09:09:54"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/852ba250153817e5ff477b52a94d93f1.pdf",
        "pages": 9,
        "sha256": "c6342c897e519d3e",
        "source_tier": "lcsc"
      },
      "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": "sd2350d50b.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4,
          4.5,
          1.52
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "844c0bb504d0c383535d9845c6376fe7a4053241a2ede8d8ef694df3fcfc37c8",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sd2350d50b-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          4.5,
          1.52
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "13b14994b6b6d82f2c185221dc1fbe9b7e287cda4fca7c163cc157e9375bcb30",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "SHOUDING",
      "Package": "SOT-89-3",
      "Category": "Power Management ICs",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "c6342c897e519d3eebe8e2006c3af130a62bde4e09b693669699a7894f70897d",
      "rows": [
        {
          "name": "Output voltage",
          "symbol": "Vout",
          "kind": "electrical",
          "unit": "V",
          "min": 4.875,
          "typ": 5,
          "max": 5.125,
          "conditions": "VIN=2.2V, Iload=10mA, TA=25C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Start-up voltage",
          "symbol": "Vstart",
          "kind": "electrical",
          "unit": "V",
          "min": 0.5,
          "typ": 0.8,
          "max": 0.9,
          "conditions": "IL=1mA, VIN: 0→0.98V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Hold voltage",
          "symbol": "Vhold",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.5,
          "max": 0.6,
          "conditions": "IL=1mA, VIN: 0.98→0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "No-load input current",
          "symbol": "IIN1",
          "kind": "electrical",
          "unit": "µA",
          "min": 8,
          "typ": 15,
          "max": 25,
          "conditions": "VIN=2.2V, no load",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent input current",
          "symbol": "IIN2",
          "kind": "electrical",
          "unit": "µA",
          "min": 2,
          "typ": 4,
          "max": 8,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Switch on-current",
          "symbol": "ILX",
          "kind": "electrical",
          "unit": "mA",
          "min": 570,
          "typ": null,
          "max": null,
          "conditions": "VLX=0.4V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Switch leakage current",
          "symbol": "ILxleak",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "VLX=6V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Oscillation frequency",
          "symbol": "FOSC",
          "kind": "electrical",
          "unit": "kHz",
          "min": 150,
          "typ": 200,
          "max": 250,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Duty cycle",
          "symbol": "Dty",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 80,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Efficiency",
          "symbol": "η",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 85,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input voltage to GND",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output current",
          "symbol": "Iout",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 800,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation SOT-89",
          "symbol": "Pd",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "SOT-89",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 145,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Lead soldering temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "10 s",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sd2350d50b"
  ],
  "discovery_pitch": "SD2350D50B (SHOUDING) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sd2350d50b.kicad_sym",
    "sd2350d50b.kicad_mod",
    "sd2350d50b.glb",
    "sd2350d50b.step",
    "sd2350d50b.lbr",
    "docs/hero.png",
    "docs/sd2350d50b-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sd2350d50b-hero.glb",
    "sd2350d50b-hero.overlay.json",
    "sd2350d50b-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}