WH251E-3

{
  "schema_version": 1,
  "type": "component",
  "slug": "wh251e-3",
  "title": "WH251E-3",
  "brief": "WILLSEMI Will Semicon Hall Sensor, TSOT-23-3L. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "sensor",
    "wh251e-3"
  ],
  "component": {
    "mpn": "WH251E-3",
    "manufacturer": "WILLSEMI Will Semicon",
    "package": "TSOT-23-3L",
    "pin_count": 3,
    "category": "Sensor",
    "subcategory": "Hall Sensor",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/33012b901d599c2c2f9e9c280cf93075.pdf",
    "parts": {
      "symbol": "wh251e-3.kicad_sym",
      "footprint": "wh251e-3.kicad_mod",
      "model_3d": "wh251e-3-etched.glb",
      "model_3d_plain": "wh251e-3.glb",
      "model_3d_step": "wh251e-3-etched.step",
      "model_3d_step_plain": "wh251e-3.step",
      "lbr": "wh251e-3.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply input, 1.65 V to 5 V operating (6 V absolute max). A 100 Ω series resistor is recommended for reverse-polarity protection; typical bypass is a 10 nF capacitor (C1) to GND per the application circuit."
      },
      {
        "number": "2",
        "name": "Output",
        "type": "output",
        "description": "Totem-pole (push-pull) CMOS Hall switch output. Drives low when an operating-point magnetic flux (|B| > BOP, either N or S pole) is detected and high otherwise (omni-polar). VOH ≥ VDD-0.2 V and VOL ≤ 0.2 V at IOUT = 0.5 mA; IOUT absolute max 1 mA. Application circuit shows a 100 pF capacitor (C2) to GND on this pin."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground / negative supply return for the device."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/33012b901d599c2c2f9e9c280cf93075.pdf",
        "pages": 12,
        "sha256": "56fdee8ddbf6b1a5",
        "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": "wh251e-3.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": "16964b14f93e6c778288a0c110b35f670fab733109c26f0da7dfc07cc3350040",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "wh251e-3-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": "65d4e8d0a2a1909737c5f26de1e84d14998f94f044432c38d89da4b3b80ab45a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "WILLSEMI Will Semicon",
      "Package": "TSOT-23-3L",
      "Category": "Sensor",
      "Pins": "3"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "wh251e-3"
  ],
  "discovery_pitch": "WH251E-3 (WILLSEMI Will Semicon) 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",
    "wh251e-3.kicad_sym",
    "wh251e-3.kicad_mod",
    "wh251e-3.glb",
    "wh251e-3.step",
    "wh251e-3.lbr",
    "docs/hero.png",
    "docs/wh251e-3-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "wh251e-3-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "WH251E-3/TR",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T14:05:39.260Z"
}