MD8240A

{
  "schema_version": 1,
  "type": "component",
  "slug": "md8240a",
  "title": "MD8240A",
  "brief": "Shanghai Mingda Microelectronics Linear Voltage Regulators (LDO), 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",
    "md8240a",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "MD8240A",
    "manufacturer": "Shanghai Mingda Microelectronics",
    "package": "SOT-89-3",
    "pin_count": 3,
    "category": "Power Management ICs",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/c581449b2749274a20ec887bfa76ce3b.pdf",
    "parts": {
      "symbol": "md8240a.kicad_sym",
      "footprint": "md8240a.kicad_mod",
      "model_3d": "md8240a-hero.glb",
      "model_3d_plain": "md8240a-etched.glb",
      "model_3d_step": "md8240a-etched.step",
      "model_3d_step_plain": "md8240a.step",
      "lbr": "md8240a.lbr"
    },
    "distributor_links": {
      "lcsc": "C920443"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T06:16:09Z",
      "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 for the regulator, which must be wired with low impedance, and the output capacitor should be placed close to the VOUT-GND pins."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Regulator input supply with an absolute maximum of -0.3 to 45 V and 40 V maximum input for regulated output, requiring an input capacitor of 1.0 uF or more."
      },
      {
        "number": "3",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated 4.0 V output (MD8240, 3.88 to 4.12 V) with 150 mA rated load and about 300 mA typical current limit, which must not exceed VIN+0.3 V and needs an output capacitor of 2.2 uF or more."
      }
    ],
    "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+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet has two SOT89-3 pin drawings. The one marked 82XXA reads GND, VIN, VOUT (pins 1 to 3).; The pin numbers come from reading left to right across the package drawing, because the datasheet do",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 10,
        "cost_usd": 0.0525,
        "at": "2026-10-27T06:15:59"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/c581449b2749274a20ec887bfa76ce3b.pdf",
        "pages": 10,
        "sha256": "bd4aefd613b0a967",
        "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": "md8240a.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": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "md8240a-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": "3837ff14d55b279acb830096d29ee77004c0b45002198679e06d75e7c845a9cd",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Shanghai Mingda Microelectronics",
      "Package": "SOT-89-3",
      "Category": "Power Management ICs",
      "Pins": "3"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "md8240a"
  ],
  "discovery_pitch": "MD8240A (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"
  },
  "files": [
    "page.json",
    "README.md",
    "md8240a.kicad_sym",
    "md8240a.kicad_mod",
    "md8240a.glb",
    "md8240a.step",
    "md8240a.lbr",
    "docs/hero.png",
    "docs/md8240a-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "md8240a-hero.glb",
    "md8240a-hero.overlay.json",
    "md8240a-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}