LR78M12D

{
  "slug": "lr78m12d",
  "version": "0.1.0",
  "type": "component",
  "description": "LRC Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "lr78m12d",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lr78m12d.kicad_sym",
    "lr78m12d.kicad_mod",
    "lr78m12d.glb",
    "lr78m12d.step",
    "lr78m12d.lbr",
    "docs/hero.png",
    "docs/lr78m12d-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lr78m12d-hero.glb",
    "lr78m12d-hero.overlay.json",
    "lr78m12d-etched.glb"
  ],
  "component": {
    "mpn": "LR78M12D",
    "manufacturer": "LRC",
    "package": "TO-252",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603113896077381632",
    "parts": {
      "symbol": "lr78m12d.kicad_sym",
      "footprint": "lr78m12d.kicad_mod",
      "model_3d": "lr78m12d-hero.glb",
      "model_3d_plain": "lr78m12d-etched.glb",
      "model_3d_step": "lr78m12d-etched.step",
      "model_3d_step_plain": "lr78m12d.step",
      "lbr": "lr78m12d.lbr"
    },
    "distributor_links": {
      "lcsc": "C2986736"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T23:37:49Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "INPUT",
        "type": "input",
        "description": "Unregulated input to the regulator; the absolute maximum input voltage is 35 V for the 5 V to 18 V output versions (40 V for 24 V)."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin for the regulator, shown as pin 2 in the pin assignment; the datasheet gives no separate electrical rating for it."
      },
      {
        "number": "3",
        "name": "OUTPUT",
        "type": "power_out",
        "description": "Regulated 12 V output for the LR78M12, specified at 11.5 V to 12.5 V (11.4 V to 12.6 V over line) with output current up to 0.5 A."
      }
    ],
    "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": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet lists the LR78M12D (D-PAK) in the ordering table on page 11, and the D-PAK pin assignm; The datasheet does not state whether the D-PAK tab is internally connected to any pin, so no tab pin; The 35 V and 40 V input ratings are the datasheet's absolute maximum ratings for the whole series, n"
        ],
        "pages_sent": 11,
        "cost_usd": 0.038,
        "at": "2026-10-17T23:34:45"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603113896077381632",
        "pages": 11,
        "sha256": "48b0ea17bd097b96",
        "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": "lr78m12d.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": "3eb4c99603a4fe837c2fe9308bc174769ded87a785a0df48d2dc441432ee8b4c",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lr78m12d-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": "79e24565e767d88ab4103d454bbdfe578976aa6d02c2da2e9a08d371f6beeb84",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}