main
Ray Set visibility: public c85371e 2d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "md85e40pa1",
  "title": "MD85E40PA1",
  "brief": "Shanghai Mingda Microelectronics Linear Voltage Regulators (LDO), SOT-89-3L. 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 supply chip",
    "md85e40pa1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "MD85E40PA1",
    "manufacturer": "Shanghai Mingda Microelectronics",
    "package": "SOT-89-3L",
    "pin_count": 3,
    "category": "Power Supply Chip",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/0f4414a73a1664da5ac1d8a6a00d7b83.pdf",
    "parts": {
      "symbol": "md85e40pa1.kicad_sym",
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      "model_3d_step": "md85e40pa1-etched.step",
      "model_3d_step_plain": "md85e40pa1.step",
      "lbr": "md85e40pa1.lbr"
    },
    "distributor_links": {
      "lcsc": "C2978381"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T21:16:59Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 800 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output voltage pin (4.0V for MD8540), delivers up to 300mA and should not exceed VIN+0.3V; use a 1uF or larger output capacitor."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin; the package diagram also marks the tab as connected to pin 2."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Power input pin, operating range 2.2V to 40V (absolute maximum 45V); use a 1uF or larger input capacitor."
      }
    ],
    "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 SOT89-3 package has no EN pin, so the ON/OFF function is not available on this variant. The pin-; The pin order comes from the top-view diagram text, where the standard (non-A) SOT89-3 reads VOUT, G; The datasheet text does not state in words that the SOT89-3 tab is GND. The diagram shows a '2' at t"
        ],
        "pages_sent": 16,
        "cost_usd": 0.0809,
        "at": "2026-10-23T21:15:52"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/0f4414a73a1664da5ac1d8a6a00d7b83.pdf",
        "pages": 16,
        "sha256": "eb9db1999ca1681a",
        "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": "md85e40pa1.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": "md85e40pa1-etched.step",
        "role": "eda",
        "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": "70f3291c9278e32457c5ba9e5b32a5a46c9ba8a91604b57ca88d5571b0a580b1",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Shanghai Mingda Microelectronics",
      "Package": "SOT-89-3L",
      "Category": "Power Supply Chip",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "eb9db1999ca1681a9775106b188e2bf193feef719f2875e12f7707ebce497337",
      "rows": [
        {
          "name": "Output Voltage",
          "symbol": "VOUT(S)",
          "kind": "electrical",
          "unit": "×VOUT(S)",
          "min": 0.98,
          "typ": 1,
          "max": 1.02,
          "conditions": "VIN=VOUT(S)+2V, IOUT=1mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.2,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.01,
          "max": 0.02,
          "conditions": "VOUT(S)+2V≤VIN≤40V, IOUT=1mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "ΔVOUT2",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 25,
          "max": 50,
          "conditions": "VIN=VOUT(S)+2V, 1mA≤IOUT≤300mA, VOUT(S)≤5.3V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Temperature Stability",
          "symbol": "",
          "kind": "temperature_coefficient",
          "unit": "ppm/℃",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "VIN=VOUT(S)+2V, IOUT=10mA, -40℃≤Ta≤125℃",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "GND Current",
          "symbol": "IGND",
          "kind": "electrical",
          "unit": "uA",
          "min": 1,
          "typ": 1.5,
          "max": 2.5,
          "conditions": "VEN=VIN, no load, 3.0≤VOUT(S)≤5.3V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Current",
          "symbol": "ISHUT",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 0.1,
          "max": 1,
          "conditions": "VIN=40.0V, VEN=0",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Maximum Output Current",
          "symbol": "IOUTMAX",
          "kind": "electrical",
          "unit": "mA",
          "min": 300,
          "typ": 350,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Current Limit",
          "symbol": "ILIM",
          "kind": "electrical",
          "unit": "mA",
          "min": 350,
          "typ": null,
          "max": 550,
          "conditions": "VIN=VOUT(S)+2V, VOUT=0.95×VOUT(S)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "EN High Level Voltage",
          "symbol": "VENH",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "EN Low Level Voltage",
          "symbol": "VENL",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 0.6,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "EN High Level Current",
          "symbol": "IENH",
          "kind": "electrical",
          "unit": "uA",
          "min": -0.1,
          "typ": null,
          "max": 0.1,
          "conditions": "VIN=40V, VEN=VIN",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "EN Low Level Current",
          "symbol": "IENL",
          "kind": "electrical",
          "unit": "uA",
          "min": -0.1,
          "typ": null,
          "max": 0.1,
          "conditions": "VIN=40V, VEN=0",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage (absolute maximum)",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 45,
          "conditions": "Ta=25℃",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation SOT89-3",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 1000,
          "conditions": "SOT89-3",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating Ambient Temperature",
          "symbol": "Topr",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ESD HBM",
          "symbol": "ESD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 5000,
          "conditions": "HBM",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance SOT89-3",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "SOT89-3",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Short Circuit Current",
          "symbol": "ISHORT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 65,
          "max": null,
          "conditions": "VIN=VEN=VOUT(S)+2.0V, VOUT=0V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Over Temperature Protection",
          "symbol": "OTP",
          "kind": "electrical",
          "unit": "℃",
          "min": null,
          "typ": 170,
          "max": null,
          "conditions": "IOUT=1mA",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
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  "discovery_triggers": [
    "md85e40pa1"
  ],
  "discovery_pitch": "MD85E40PA1 (Shanghai Mingda Microelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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  "visibility": {
    "public": true
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}