MC7812BTG

{
  "schema_version": 1,
  "type": "component",
  "slug": "mc7812btg",
  "title": "MC7812BTG",
  "brief": "onsemi Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220AB. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "mc7812btg"
  ],
  "component": {
    "mpn": "MC7812BTG",
    "manufacturer": "onsemi",
    "package": "TO-220AB",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://www.onsemi.com/pdf/datasheet/mc7812bt-d.pdf",
    "parts": {
      "symbol": "mc7812btg.kicad_sym",
      "footprint": "mc7812btg.kicad_mod",
      "model_3d": "mc7812btg-etched.glb",
      "model_3d_plain": "mc7812btg.glb",
      "model_3d_step": "mc7812btg-etched.step",
      "model_3d_step_plain": "mc7812btg.step",
      "lbr": "mc7812btg.lbr"
    },
    "distributor_links": {
      "digikey": "MC7812BTGOS-ND",
      "lcsc": "C45387"
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Unregulated positive input voltage. Must remain typically 2.0 V above VOUT even at the ripple minimum; absolute max input for Case 936 is 35 V. A 0.33 uF input capacitor is recommended if the regulator is far from the bulk supply filter."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground shared between input and output returns. The exposed heatsink tab of the D2PAK-3 (Case 936) package is electrically bonded to this pin."
      },
      {
        "number": "3",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated +12 V output (nominal, MC7812 variant). Delivers >1.0 A with adequate heatsinking; internally current-limited and thermally protected. An output capacitor (<0.1 uF may cause instability; ~0.1 uF or larger recommended) improves transient response."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.onsemi.com/pdf/datasheet/mc7812bt-d.pdf",
        "pages": 31,
        "sha256": "92281b28af847a90",
        "source_tier": "mfr"
      },
      "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        0,
        0
      ],
      "corner": "bottom-right",
      "source": "pad-position",
      "derived_from": "TO-220-3_Vertical@sha256:0c6681bb273696ad",
      "mark": "synthesised"
    },
    "models_3d": [
      {
        "file": "mc7812btg.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          10.25,
          4.455,
          28.525
        ],
        "zmin_mm": -9.75,
        "centre_offset_mm": 0.932,
        "footprint_binding": "identity",
        "sha256": "7cb065d935df5771f0ba6e48ddd180863a121af76483dad7f18e667a7b68204a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mc7812btg-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          10.25,
          4.455,
          28.525
        ],
        "zmin_mm": -9.75,
        "centre_offset_mm": 0.932,
        "footprint_binding": "identity",
        "sha256": "a533a19f12500676b151a2b27a14f71b6919ebc628031aa3acc68c633aead436",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "TO-220AB",
      "Category": "PMIC",
      "Pins": "3"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "mc7812btg"
  ],
  "discovery_pitch": "MC7812BTG (onsemi) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mc7812btg.kicad_sym",
    "mc7812btg.kicad_mod",
    "mc7812btg.glb",
    "mc7812btg.step",
    "mc7812btg-etched.step",
    "mc7812btg.lbr",
    "docs/hero.png",
    "docs/mc7812btg-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "MC7812BTGT",
      "kind": "packaging"
    },
    {
      "mpn": "MC7812BTG",
      "kind": "packaging"
    },
    {
      "mpn": "MC7812BTGD2T",
      "kind": "packaging"
    },
    {
      "mpn": "MC7812BTGDT",
      "kind": "packaging"
    },
    {
      "mpn": "MC7812BTGDTRK",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-28T18:55:52.223Z"
}