HG811TM4

{
  "schema_version": 1,
  "type": "component",
  "slug": "hg811tm4",
  "title": "HG811TM4",
  "brief": "HGSEMI Supervisor and Reset ICs, SOT-143-4. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "hg811tm4"
  ],
  "component": {
    "mpn": "HG811TM4",
    "manufacturer": "HGSEMI",
    "package": "SOT-143-4",
    "pin_count": 4,
    "category": "PMIC",
    "subcategory": "Supervisor and Reset ICs",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2407051002_HGSEMI-HG811TM4-TR_C2835195.pdf",
    "parts": {
      "symbol": "hg811tm4.kicad_sym",
      "footprint": "hg811tm4.kicad_mod",
      "model_3d": "hg811tm4-etched.glb",
      "model_3d_plain": "hg811tm4.glb",
      "model_3d_step": "hg811tm4-etched.step",
      "model_3d_step_plain": "hg811tm4.step",
      "lbr": "hg811tm4.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground / negative supply return."
      },
      {
        "number": "2",
        "name": "VRESET",
        "type": "output",
        "description": "Active-low reset output. Pulled low when VCC drops below the threshold Vth (3.08 V typ for HG811TM4) or when MR is asserted low; returns high after the Trp reset delay (500 ms typical). VOL ≤ 0.5 V at ISINK = 3.2 mA; VOH ≥ 0.8·VCC at ISOURCE = 500 µA."
      },
      {
        "number": "3",
        "name": "MR",
        "type": "input",
        "description": "Manual reset / enable input, active low. Driving MR low forces VRESET low; releasing MR high starts the Trp reset delay. VIH ≥ 0.7·VCC, VIL ≤ 0.2·VCC. Minimum pulse width tMR = 10 µs."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply and monitored voltage input. Operating range 1.0 V to 6.0 V (absolute max 6.5 V). Quiescent current ICCH ≈ 1 µA typ, 5 µA max at VCC = 6 V with MR high."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2407051002_HGSEMI-HG811TM4-TR_C2835195.pdf",
        "pages": 7,
        "sha256": "a75fd3d5b03be350",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 4,
        "described": 4,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -1,
        -0.75
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-143@sha256:80e8edd31fe81e67",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "hg811tm4.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.3,
          2.9,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "b35b433c0dc71ac416a9c731e744d2e0610f82ebe97275830f0e17cdcbe44512",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "hg811tm4-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.3,
          2.9,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "815b33f537d8854122e085458a12ff13d58a2778d14b9c726d776baa9fed1a96",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "SOT-143-4",
      "Category": "PMIC",
      "Pins": "4"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "hg811tm4"
  ],
  "discovery_pitch": "HG811TM4 (HGSEMI) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "hg811tm4.kicad_sym",
    "hg811tm4.kicad_mod",
    "hg811tm4.glb",
    "hg811tm4.step",
    "hg811tm4-etched.step",
    "hg811tm4.lbr",
    "docs/hero.png",
    "docs/hg811tm4-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "HG811TM4/TR",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-24T21:52:33.913Z"
}