HT7039S

{
  "schema_version": 1,
  "type": "component",
  "slug": "ht7039s",
  "title": "HT7039S",
  "brief": "UMW Supervisor and Reset ICs, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "ht7039s"
  ],
  "component": {
    "mpn": "HT7039S",
    "manufacturer": "UMW",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Supervisor and Reset ICs",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2311091737_UMW-Youtai-Semiconductor-Co---Ltd--HT7039S_C2842952.pdf",
    "parts": {
      "symbol": "ht7039s.kicad_sym",
      "footprint": "ht7039s.kicad_mod",
      "model_3d": "ht7039s-etched.glb",
      "model_3d_plain": "ht7039s.glb",
      "model_3d_step": "ht7039s-etched.step",
      "model_3d_step_plain": "ht7039s.step",
      "lbr": "ht7039s.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "OUT",
        "type": "output",
        "description": "Chip output. NMOS open-drain detector output; pulls low when VDD falls below VDET (3.9V typ). Requires an external pull-up resistor (Rp) to VCC. IOL = 4mA min / 6mA typ at VOUT=0.2V."
      },
      {
        "number": "3",
        "name": "VDD",
        "type": "power_in",
        "description": "Chip input / supply voltage. Operating range 1.5V-12V; absolute max 15V. The voltage monitored against the internal reference (VDET = 3.9V typ for HT7039)."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Chip ground reference (0V)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2311091737_UMW-Youtai-Semiconductor-Co---Ltd--HT7039S_C2842952.pdf",
        "pages": 12,
        "sha256": "ca4a5b03cf717e3e",
        "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": "ht7039s.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3.0,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ht7039s-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3.0,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d6c35c7cdcf6a1555e2edced5ce8514398e847d5012d62f1635e0ba473b000b6",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "UMW",
      "Package": "SOT-23",
      "Category": "PMIC",
      "Pins": "3"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ht7039s"
  ],
  "discovery_pitch": "HT7039S (UMW) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ht7039s.kicad_sym",
    "ht7039s.kicad_mod",
    "ht7039s.glb",
    "ht7039s.step",
    "ht7039s.lbr",
    "docs/hero.png",
    "docs/ht7039s-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ht7039s-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "HT7039SS",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-24T22:05:46.317Z"
}