L7812CV

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  "slug": "l7812cv",
  "title": "L7812CV",
  "brief": "UMW Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.1",
  "license": "CC-BY-SA-4.0",
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    "pmic",
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  "component": {
    "mpn": "L7812CV",
    "manufacturer": "UMW",
    "package": "TO-220",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/7028d4198b8d33293932ce8ec87d1b48.pdf",
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      "lbr": "l7812cv.lbr"
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    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "VI",
        "type": "power_in",
        "description": "Unregulated positive input voltage. Absolute max input 35 V (for VO=5-18V variants). A 0.33 µF input bypass capacitor is recommended near the pin to suppress oscillation when the regulator is located far from the raw supply filter."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground reference for both input and output. On the TO-220 package this pin is electrically connected to the metal tab, so the tab must be treated as GND when heatsinking."
      },
      {
        "number": "3",
        "name": "VO",
        "type": "power_out",
        "description": "Regulated +12 V output (typ; 11.4-12.6 V over line/load). Delivers up to 1.2 A with adequate heatsinking. A 0.1 µF ceramic output capacitor is recommended for transient response; larger tantalum/electrolytic caps improve stability."
      }
    ],
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        "pages": 18,
        "sha256": "187ff89cc4c93f6a",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
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        "described": 3,
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        "refuses_to_fabricate": true
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    "pin1": {
      "pad": "1",
      "at": [
        0,
        0
      ],
      "corner": "bottom-right",
      "source": "pad-position",
      "derived_from": "TO-220-3_Vertical@sha256:0c6681bb273696ad",
      "mark": "synthesised"
    },
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        "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)"
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        "role": "eda",
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        "origin": "footprint origin = pad-pattern centre",
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        "checked": "2026-10-07",
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    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "UMW",
      "Package": "TO-220",
      "Category": "PMIC",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "187ff89cc4c93f6a",
      "rows": [
        {
          "name": "Output Voltage (TJ=25°C)",
          "symbol": "VO",
          "kind": "tolerance",
          "unit": "V",
          "min": 11.5,
          "typ": 12,
          "max": 12.5,
          "conditions": "TJ=25°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage (over temperature)",
          "symbol": "VO",
          "kind": "tolerance",
          "unit": "V",
          "min": 11.4,
          "typ": null,
          "max": 12.6,
          "conditions": "TJ=-40 to 125°C, VI=19V, IO=500mA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "TJ=25°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current Change (load)",
          "symbol": "ΔIQ",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "IO=5mA to 1A",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Absolute maximum input voltage (VO=5 to 18V)",
          "symbol": "VI",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 35,
          "conditions": "VO=5 to 18V",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature Range",
          "symbol": "TOPR",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction-case (TO-220)",
          "symbol": "RthJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction-ambient (TO-220)",
          "symbol": "RthJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Input voltage",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 35,
          "conditions": "VO=5 to 18V",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  "discovery_pitch": "L7812CV (UMW) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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  "files": [
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    "README.md",
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    "l7812cv-etched.step",
    "l7812cv.lbr",
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    "viewers/symbol.html",
    "viewers/footprint.html",
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  "visibility": "public",
  "variants": [
    {
      "mpn": "L7812CV",
      "kind": "packaging"
    },
    {
      "mpn": "L7812CVD2T",
      "kind": "packaging"
    },
    {
      "mpn": "L7812CVDT",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-24T23:32:18.767Z",
  "description": "UMW Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "org": "adom"
}