main
Ray Set visibility: public 74dc008 14d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "lm7808t",
  "title": "LM7808T",
  "brief": "HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220. 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)",
    "lm7808t",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LM7808T",
    "manufacturer": "HGSEMI",
    "package": "TO-220",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757038663820038144",
    "parts": {
      "symbol": "lm7808t.kicad_sym",
      "footprint": "lm7808t.kicad_mod",
      "model_3d": "lm7808t-hero.glb",
      "model_3d_plain": "lm7808t-etched.glb",
      "model_3d_step": "lm7808t-etched.step",
      "model_3d_step_plain": "lm7808t.step",
      "lbr": "lm7808t.lbr"
    },
    "distributor_links": {
      "lcsc": "C507143",
      "digikey": "5536-LM7808T-ND"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T21:12:40Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "5536-LM7808T-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Vcc",
        "type": "power_in",
        "description": "Unregulated input supply pin; for the LM7808 the datasheet gives an input voltage range of 11 V to 35 V, and the absolute maximum input voltage is 35 V."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (common) reference pin for the regulator."
      },
      {
        "number": "3",
        "name": "OUT",
        "type": "power_out",
        "description": "Regulated 8 V output (7.7 V to 8.3 V at VI=14 V, Io=0.5 A) with a maximum output current IOM of 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: Pinout taken from the TO-220-3 pin table on page 2; LM7808T is ordered in TO-220-3 tube packaging pe; Pin 1 is labeled Vcc with function '电源' (power) in the datasheet. It is classified as power_in becau"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0321,
        "at": "2026-10-20T21:06:44"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757038663820038144",
        "pages": 11,
        "sha256": "b569535747cdcefd",
        "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": "lm7808t.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": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm7808t-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": "f5295e0a81d80229948e3518fdf819de642f49aeddc6ed36af67ac73c229ab94",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "TO-220",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "b569535747cdcefdf77bdd204f3ade0640a480e59c552991885d1474e73d88f2",
      "rows": [
        {
          "name": "输出电压 (Output voltage)",
          "symbol": "Vo",
          "kind": "electrical",
          "unit": "V",
          "min": 7.7,
          "typ": 8,
          "max": 8.3,
          "conditions": "VI=14V, Io=0.5A, PD≤15W",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "电压调整率 (Line regulation)",
          "symbol": "REGv",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 5,
          "max": 160,
          "conditions": "VI=11~22V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "负载调整率 (Load regulation)",
          "symbol": "REGL",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 10,
          "max": 160,
          "conditions": "Io=5mA~1.2A",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "输入电压 (Input voltage)",
          "symbol": "VI",
          "kind": "electrical",
          "unit": "V",
          "min": 11,
          "typ": null,
          "max": 35,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "纹波抑制比 (Ripple rejection)",
          "symbol": "Srip",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 56,
          "max": null,
          "conditions": "VI=12~25V, Io=100mA, f=120Hz",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "最大输出电流 (Maximum output current)",
          "symbol": "IOM",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 1.2,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "输出电压温度系数 (Output voltage temperature coefficient)",
          "symbol": "∆V/T",
          "kind": "temperature_coefficient",
          "unit": "mV/℃",
          "min": null,
          "typ": 0.8,
          "max": null,
          "conditions": "Io=5mA, Tj=0~125℃",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "输出噪声电压 (Output noise voltage)",
          "symbol": "VNO",
          "kind": "electrical",
          "unit": "μV",
          "min": null,
          "typ": 52,
          "max": null,
          "conditions": "f=10Hz~100kHz",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "输入电压 (Input voltage, absolute maximum)",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 35,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "功耗 (Power dissipation)",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "工作环境温度 (Operating ambient temperature)",
          "symbol": "Tamb",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": 0,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "贮存温度 (Storage temperature)",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "引脚温度 (Lead temperature, soldering)",
          "symbol": "TLEAD",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 245,
          "conditions": "soldering 10s",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "结至环境热阻 (Junction-to-ambient thermal resistance)",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 23.9,
          "max": null,
          "conditions": "TO-220 package",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "结至外壳(顶部)热阻 (Junction-to-case top thermal resistance)",
          "symbol": "RθJC(top)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 16.7,
          "max": null,
          "conditions": "TO-220 package",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "结至电路板热阻 (Junction-to-board thermal resistance)",
          "symbol": "RθJB",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 5.3,
          "max": null,
          "conditions": "TO-220 package",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "结至外壳(底部)热阻 (Junction-to-case bottom thermal resistance)",
          "symbol": "RθJC(bot)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 1.7,
          "max": null,
          "conditions": "TO-220 package",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "结至顶部特征参数 (Junction-to-top characterization parameter)",
          "symbol": "ΨJT",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 3.2,
          "max": null,
          "conditions": "TO-220 package",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "结至电路板特征参数 (Junction-to-board characterization parameter)",
          "symbol": "ΨJB",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 5.3,
          "max": null,
          "conditions": "TO-220 package",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lm7808t"
  ],
  "discovery_pitch": "LM7808T (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",
    "lm7808t.kicad_sym",
    "lm7808t.kicad_mod",
    "lm7808t.glb",
    "lm7808t.step",
    "lm7808t.lbr",
    "docs/hero.png",
    "docs/lm7808t-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm7808t-hero.glb",
    "lm7808t-hero.overlay.json",
    "lm7808t-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}