78D12LL

{
  "slug": "78d12ll",
  "version": "0.1.0",
  "type": "component",
  "description": "UTC(Unisonic Tech) Linear Voltage Regulators (LDO), TO-252. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management ics",
    "78d12ll",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "78d12ll.kicad_sym",
    "78d12ll.kicad_mod",
    "78d12ll.glb",
    "78d12ll.step",
    "78d12ll.lbr",
    "docs/hero.png",
    "docs/78d12ll-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "78d12ll-hero.glb",
    "78d12ll-hero.overlay.json",
    "78d12ll-etched.glb"
  ],
  "component": {
    "mpn": "78D12LL",
    "manufacturer": "UTC(Unisonic Tech)",
    "package": "TO-252",
    "pin_count": 3,
    "category": "Power Management ICs",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/3dd95adbcc7baa7276932e6d0463ccaa.pdf",
    "parts": {
      "symbol": "78d12ll.kicad_sym",
      "footprint": "78d12ll.kicad_mod",
      "model_3d": "78d12ll-hero.glb",
      "model_3d_plain": "78d12ll-etched.glb",
      "model_3d_step": "78d12ll-etched.step",
      "model_3d_step_plain": "78d12ll.step",
      "lbr": "78d12ll.lbr"
    },
    "distributor_links": {
      "lcsc": "C7509604"
    },
    "distributor_check": {
      "checked_at": "2026-10-29T00:26:04Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "INPUT",
        "type": "power_in",
        "description": "Unregulated input voltage to the regulator; the absolute maximum input voltage is 35 V and bypass capacitors should be placed as close to the regulator as possible."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (common) reference pin for the regulator, shared between input and output."
      },
      {
        "number": "3",
        "name": "OUTPUT",
        "type": "power_out",
        "description": "Regulated 12 V output, rated for output current up to 0.5 A (peak output current 1.2 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 MPN '78D12LL' does not appear verbatim in the datasheet. The ordering table lists the family as ; The datasheet has three TO-252-type variants (TO-252 TN3, TO-252-3 TNA, TO-252D TND) that all share ; The pin assignment comes from the pin-code columns of the ordering table (I = Input, G = GND, O = Ou"
        ],
        "pages_sent": 10,
        "cost_usd": 0.0446,
        "at": "2026-10-29T00:25:56"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/3dd95adbcc7baa7276932e6d0463ccaa.pdf",
        "pages": 10,
        "sha256": "a771b5444db5f76c",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          2.32
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3eb4c99603a4fe837c2fe9308bc174769ded87a785a0df48d2dc441432ee8b4c",
        "checked": "2026-10-29",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
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        "role": "eda",
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        "origin": "footprint origin = pad-pattern centre",
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        "sha256": "e6f20c540fd5e237f4feef1452861a070982bea965da4286e17e731b73eb0802",
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    ]
  }
}