main
Ray Set visibility: public 02daabd 14h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "md73r33",
  "title": "MD73R33",
  "brief": "Shanghai Mingda Microelectronics Linear Voltage Regulators (LDO), SOT-23-5L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "power supply chip",
    "md73r33",
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    "extractor-text"
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  "component": {
    "mpn": "MD73R33",
    "manufacturer": "Shanghai Mingda Microelectronics",
    "package": "SOT-23-5L",
    "pin_count": 5,
    "category": "Power Supply Chip",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/3a0c3912b75b597c8628db537e0d69cf.pdf",
    "parts": {
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      "footprint": "md73r33.kicad_mod",
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      "model_3d_step": "md73r33-etched.step",
      "model_3d_step_plain": "md73r33.step",
      "lbr": "md73r33.lbr"
    },
    "distributor_links": {
      "lcsc": "C2978403"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T00:35:51Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply input terminal; the input voltage can be raised to a maximum of 18 V while the output stays regulated."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground terminal."
      },
      {
        "number": "3",
        "name": "CE",
        "type": "input",
        "description": "Enable control terminal; the datasheet gives VCEH minimum 1.0 V and VCEL maximum 0.35 V."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No-connect (floating) pin, left unconnected."
      },
      {
        "number": "5",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output terminal; VOUT must not exceed VIN+0.3 V, otherwise reverse current can damage the IC."
      }
    ],
    "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": null,
        "consensus": "skipped (clean text read)",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 10,
        "cost_usd": 0.0006,
        "at": "2026-10-27T00:35:14"
      },
      "datasheet": {
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        "pages": 10,
        "sha256": "72bda1000b9c09a2",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "md73r33.step",
        "role": "plain",
        "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": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "md73r33-etched.step",
        "role": "eda",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
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        "sha256": "5a14de57b80a4fcefb0c645b28dacc83c3792896ca9d764bcfb91d3a26ab1797",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Shanghai Mingda Microelectronics",
      "Package": "SOT-23-5L",
      "Category": "Power Supply Chip",
      "Pins": "5"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "72bda1000b9c09a24c5e786568f64cb7555ec56ca0ff5cc153d8c2284c725552",
      "rows": [
        {
          "name": "Output voltage",
          "symbol": "VOUT",
          "kind": "tolerance",
          "unit": "V",
          "min": 3.234,
          "typ": 3.3,
          "max": 3.366,
          "conditions": "VIN= 5.3V, IOUT=10mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output current",
          "symbol": "IOUT",
          "kind": "electrical",
          "unit": "mA",
          "min": 300,
          "typ": null,
          "max": null,
          "conditions": "VIN= 5.3V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input-output voltage differential",
          "symbol": "Vdrop",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 250,
          "conditions": "IOUT=1 mA; IOUT=100 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input stability",
          "symbol": "ΔVOUT1/(ΔVIN·VOUT)",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.05,
          "max": 0.2,
          "conditions": "4.3V≤VIN≤18V, IOUT=1mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Load stability",
          "symbol": "ΔVOUT2",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 60,
          "max": 100,
          "conditions": "VIN=5.3V, 1.0mA≤IOUT≤300mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output voltage temperature coefficient",
          "symbol": "ΔVOUT/(ΔTa·VOUT)",
          "kind": "temperature_coefficient",
          "unit": "Ppm/℃",
          "min": null,
          "typ": 50,
          "max": 100,
          "conditions": "VIN=4.3V, IOUT=10mA, -40℃≤Ta≤85℃",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Consumption current",
          "symbol": "ISS",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 20,
          "max": 30,
          "conditions": "VIN=18V, no load",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Static current",
          "symbol": "ISS1",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 0.1,
          "max": 1,
          "conditions": "VIN=18V, CE=GND, no load",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "CE pull-up current",
          "symbol": "ICEH",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 0.1,
          "max": 1,
          "conditions": "VIN=VCE=VOUT+1V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "CE input high voltage",
          "symbol": "VCEH",
          "kind": "electrical",
          "unit": "V",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "CE input low voltage",
          "symbol": "VCEL",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 0.35,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input voltage",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 18,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output short-circuit current",
          "symbol": "Ilim",
          "kind": "electrical",
          "unit": "mA",
          "min": 15,
          "typ": null,
          "max": 50,
          "conditions": "Vout=0V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Allowable power dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 250,
          "conditions": "SOT-23-5L",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature range",
          "symbol": "Topr",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage ambient temperature range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "md73r33"
  ],
  "discovery_pitch": "MD73R33 (Shanghai Mingda Microelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
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  "files": [
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    "md73r33.step",
    "md73r33.lbr",
    "docs/hero.png",
    "docs/md73r33-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "md73r33-hero.glb",
    "md73r33-hero.overlay.json",
    "md73r33-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}