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Ray Set visibility: public d2f6452 9d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "lm7912ct",
  "title": "LM7912CT",
  "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": [
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    "power management (pmic)",
    "lm7912ct",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LM7912CT",
    "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/8602994230281453568",
    "parts": {
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      "footprint": "lm7912ct.kicad_mod",
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      "model_3d_step": "lm7912ct-etched.step",
      "model_3d_step_plain": "lm7912ct.step",
      "lbr": "lm7912ct.lbr"
    },
    "distributor_links": {
      "lcsc": "C7432211",
      "digikey": "2156-LM7912CT-FS-ND",
      "mouser": "512-LM7912CT"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T07:21:10Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-LM7912CT-FS-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "512-LM7912CT",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground reference for the regulator; the datasheet states no separate voltage or current limit for this pin."
      },
      {
        "number": "2",
        "name": "Input",
        "type": "power_in",
        "description": "Unregulated negative input voltage with an absolute maximum of -35 V at TJ=25°C, and output regulation is specified for inputs from -14.5 V to -21 V."
      },
      {
        "number": "3",
        "name": "Output",
        "type": "power_out",
        "description": "Regulated -12 V output, specified at -11.52 V to -12.48 V for 5 mA to 1.0 A load, with output current rated in excess of 1.5 A."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "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 extracted text of the page 2 pin configuration figure contains only the labels 'GND', 'Input', '; Pin-level limits are taken from the LM7912C electrical characteristics (page 4) and absolute maximum"
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        "pages_sent": 9,
        "cost_usd": 0.0439,
        "at": "2026-10-19T07:19:13"
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        "pages": 9,
        "sha256": "fe0f5995fcb9d116",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
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    "viewers": {
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    "models_3d": [
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        "file": "lm7912ct.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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          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)"
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      {
        "file": "lm7912ct-etched.step",
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        "sha256": "0f3d230507e521ca9400cefd9f41e1dbc0e5e59a5c66cd39ad9291b1315bc2a6",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "TO-220-3",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "fe0f5995fcb9d116409547a8e330feb6071443a3fa6301fc5af72c34b173171c",
      "rows": [
        {
          "name": "Output Voltage",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": -11.52,
          "typ": null,
          "max": -12.48,
          "conditions": "-14.5V ≤ VIN ≤ -21V; 5.0mA ≤ IO ≤ 1.0 A; TJ=25°C (CIN=2.2µF, CO=1.0µF)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "∆UV",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 114,
          "conditions": "IO = 100mA, -14.5V ≤ VIN ≤ -30V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "∆UV",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 58.5,
          "conditions": "IO = 100mA, -16V ≤ VIN ≤ -22V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "∆UV",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 228,
          "conditions": "IO = 500mA, -14.5V ≤ VIN ≤ -30V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "∆UI",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 228,
          "conditions": "5.0mA ≤ IO ≤ 1.5 A",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "∆UI",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 114,
          "conditions": "250mA ≤ IO ≤ 750mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current",
          "symbol": "IB",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 7.8,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current Change",
          "symbol": "∆IB",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 1.25,
          "conditions": "-14.5V ≤ VIN ≤ -30V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current Change",
          "symbol": "∆IB",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 0.48,
          "conditions": "5.0mA ≤ IO ≤ 1.5 A",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output voltage tolerance (Features)",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -4,
          "typ": null,
          "max": 4,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Maximum input voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -35,
          "conditions": "TJ = 25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum operating junction temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature Range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": 0,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature (TL)",
          "symbol": "TL",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 245,
          "conditions": "Soldering, 10 seconds",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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  "discovery_triggers": [
    "lm7912ct"
  ],
  "discovery_pitch": "LM7912CT (HGSEMI) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "lm7912ct.lbr",
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    "lm7912ct-etched.glb"
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  "visibility": {
    "public": true
  }
}