main
Ray Set visibility: public 076f3ab 8d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "lm7812ct",
  "title": "LM7812CT",
  "brief": "HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220-3. 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 (pmic)",
    "lm7812ct",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LM7812CT",
    "manufacturer": "HGSEMI",
    "package": "TO-220-3",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8770707370899058688",
    "parts": {
      "symbol": "lm7812ct.kicad_sym",
      "footprint": "lm7812ct.kicad_mod",
      "model_3d": "lm7812ct-hero.glb",
      "model_3d_plain": "lm7812ct-etched.glb",
      "model_3d_step": "lm7812ct-etched.step",
      "model_3d_step_plain": "lm7812ct.step",
      "lbr": "lm7812ct.lbr"
    },
    "distributor_links": {
      "lcsc": "C7432223",
      "digikey": "LM7812CTFS-ND",
      "mouser": "926-LM7812CT"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T00:24:01Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LM7812CTFS-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "926-LM7812CT",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "INPUT",
        "type": "power_in",
        "description": "Unregulated input voltage; absolute maximum 35 V, and for the 12 V part (LM7812C) 14.5 to 27 V keeps the output in regulation at full load range."
      },
      {
        "number": "2",
        "name": "OUTPUT",
        "type": "power_out",
        "description": "Regulated 12 V output (11.5 to 12.5 V at TJ = 25°C) delivering up to 1.5 A with internal current limiting and thermal shutdown."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference common to input and output."
      }
    ],
    "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: Pin numbers and names come from the schematic block diagram on page 2 (INPUT 1, OUTPUT 2, GND 3). Th",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 16,
        "cost_usd": 0.4112,
        "at": "2026-10-19T00:23:28"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8770707370899058688",
        "pages": 16,
        "sha256": "f70b2e22c7f5c571",
        "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": "lm7812ct.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": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm7812ct-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": "9aeaabce8f12d66291df691481a4a318f3dbcc1f64a9daeff9f649cfd9a98fc3",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "TO-220-3",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "f70b2e22c7f5c571db2158441a1842c4d69878b03491358c5928b018ba059032",
      "rows": [
        {
          "name": "Output Voltage (TJ = 25°C)",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": 11.5,
          "typ": 12,
          "max": 12.5,
          "conditions": "TJ = 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage (over line and load)",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": 11.4,
          "typ": 12,
          "max": 12.6,
          "conditions": "IO = 5 mA to 1 A, PO ≤ 15W, VI = 14.5 to 27 V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "ΔVO(*)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 240,
          "max": null,
          "conditions": "VI = 14.5 to 30 V, TJ = 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "ΔVO(*)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 120,
          "max": null,
          "conditions": "VI = 16 to 22 V, TJ = 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "ΔVO(*)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 240,
          "max": null,
          "conditions": "IO = 5 mA to 1.5 A, TJ = 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "ΔVO(*)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 120,
          "max": null,
          "conditions": "IO = 250 to 750 mA, TJ = 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current",
          "symbol": "Id",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 8,
          "max": null,
          "conditions": "TJ = 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current Change",
          "symbol": "ΔId",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.5,
          "max": null,
          "conditions": "IO = 5 mA to 1 A",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current Change",
          "symbol": "ΔId",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "VI = 14.5 to 30 V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Drift",
          "symbol": "ΔVO/ΔT",
          "kind": "temperature_coefficient",
          "unit": "mV/°C",
          "min": null,
          "typ": -1,
          "max": null,
          "conditions": "IO = 5 mA",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Output Noise Voltage",
          "symbol": "eN",
          "kind": "electrical",
          "unit": "μV/VO",
          "min": null,
          "typ": 75,
          "max": null,
          "conditions": "B = 10Hz to 100KHz, TJ = 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Supply Voltage Rejection",
          "symbol": "SVR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 55,
          "max": null,
          "conditions": "VI = 15 to 25 V, f = 120Hz",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Dropout Voltage",
          "symbol": "Vd",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "IO = 1 A, TJ = 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Output Resistance",
          "symbol": "RO",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 18,
          "max": null,
          "conditions": "f = 1 KHz",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Short Circuit Current",
          "symbol": "Isc",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 0.35,
          "max": null,
          "conditions": "VI = 35 V, TJ = 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Short Circuit Peak Current",
          "symbol": "Iscp",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 2.2,
          "max": null,
          "conditions": "TJ = 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "DC Input Voltage",
          "symbol": "VI",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 35,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature (Soldering)",
          "symbol": "TLEAD",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 245,
          "conditions": "Soldering, 10 seconds",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature Range",
          "symbol": "Top",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": 0,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-ambient thermal resistance (TO-220)",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 23.9,
          "max": null,
          "conditions": "TO-220 package column",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-case (top) thermal resistance (TO-220)",
          "symbol": "RθJC(top)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 16.7,
          "max": null,
          "conditions": "TO-220 package column",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-board thermal resistance (TO-220)",
          "symbol": "RθJB",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 5.3,
          "max": null,
          "conditions": "TO-220 package column",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-case (bottom) thermal resistance (TO-220)",
          "symbol": "RθJC(bot)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 1.7,
          "max": null,
          "conditions": "TO-220 package column",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-top characterization parameter (TO-220)",
          "symbol": "ΨJT",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 3.2,
          "max": null,
          "conditions": "TO-220 package column",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-board characterization parameter (TO-220)",
          "symbol": "ΨJB",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 5.3,
          "max": null,
          "conditions": "TO-220 package column",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lm7812ct"
  ],
  "discovery_pitch": "LM7812CT (HGSEMI) 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",
    "lm7812ct.kicad_sym",
    "lm7812ct.kicad_mod",
    "lm7812ct.glb",
    "lm7812ct.step",
    "lm7812ct.lbr",
    "docs/hero.png",
    "docs/lm7812ct-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm7812ct-hero.glb",
    "lm7812ct-hero.overlay.json",
    "lm7812ct-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}