MD8433

{
  "slug": "md8433",
  "version": "0.1.0",
  "type": "component",
  "description": "Shanghai Mingda Microelectronics Linear Voltage Regulators (LDO), TO-252-4L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "md8433",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "md8433.kicad_sym",
    "md8433.kicad_mod",
    "md8433.glb",
    "md8433.step",
    "md8433.lbr",
    "docs/hero.png",
    "docs/md8433-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "md8433-hero.glb",
    "md8433-hero.overlay.json",
    "md8433-etched.glb"
  ],
  "component": {
    "mpn": "MD8433",
    "manufacturer": "Shanghai Mingda Microelectronics",
    "package": "TO-252-4L",
    "pin_count": 5,
    "category": "Power Supply Chip",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/bbb70f9da3164f9fc7c70aaab6d6b67f.pdf",
    "parts": {
      "symbol": "md8433.kicad_sym",
      "footprint": "md8433.kicad_mod",
      "model_3d": "md8433-hero.glb",
      "model_3d_plain": "md8433-etched.glb",
      "model_3d_step": "md8433-etched.step",
      "model_3d_step_plain": "md8433.step",
      "lbr": "md8433.lbr"
    },
    "distributor_links": {
      "lcsc": "C2978592"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T01:19:45Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output voltage pin (3.3V ±2% for MD8433, up to 300mA output current, 1.0uF minimum output capacitor, must not exceed VIN+0.3V)."
      },
      {
        "number": "2",
        "name": "EN",
        "type": "input",
        "description": "Enable pin: drive high (1.5V to 40V) to enable the device and low (0V to 0.6V) to put it into low current shutdown."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin, which is also the thermal tab electrically connected to the GND node and to be connected to the GND plane for improved thermal performance."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "5",
        "name": "VIN",
        "type": "power_in",
        "description": "Power input pin with an operating input voltage range of 2.2V to 40V (absolute maximum 45V) and a 1.0uF minimum 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+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The TO252-4 pin drawing on page 2 shows lead 3 as the metal tab, drawn as a boxed '3' between leads ; The datasheet gives no explicit pin-type table. Pin types were inferred from the function descriptio",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 15,
        "cost_usd": 0.0778,
        "at": "2026-10-27T01:19:23"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/bbb70f9da3164f9fc7c70aaab6d6b67f.pdf",
        "pages": 15,
        "sha256": "627a9d1fa1c18cbe",
        "source_tier": "lcsc"
      },
      "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": [
      {
        "file": "md8433.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.9,
          6.5,
          2.32
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d85360b3e2359b76856869bda844e512876c2223b4cf36e7a7e1581f227bec7e",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "md8433-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.9,
          6.5,
          2.32
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "b06c57e5f7e8466444fc0aff6eebdf5b479ce7c6057be885ba8f8d7040d20343",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}