STM811SW16F

{
  "schema_version": 1,
  "type": "component",
  "slug": "stm811sw16f",
  "title": "STM811SW16F",
  "brief": "STMicroelectronics Supervisor and Reset ICs, SOT-143. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "stm811sw16f"
  ],
  "component": {
    "mpn": "STM811SW16F",
    "manufacturer": "STMicroelectronics",
    "package": "SOT-143",
    "pin_count": 4,
    "category": "PMIC",
    "subcategory": "Supervisor and Reset ICs",
    "datasheet": "https://www.st.com/resource/en/datasheet/stm811sw16f.pdf",
    "parts": {
      "symbol": "stm811sw16f.kicad_sym",
      "footprint": "stm811sw16f.kicad_mod",
      "model_3d": "stm811sw16f-etched.glb",
      "model_3d_plain": "stm811sw16f.glb",
      "model_3d_step": "stm811sw16f-etched.step",
      "model_3d_step_plain": "stm811sw16f.step",
      "lbr": "stm811sw16f.lbr"
    },
    "distributor_links": {
      "lcsc": "C124715"
    },
    "pins": [
      {
        "number": "1",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for the supervisor. Tie to the system ground plane."
      },
      {
        "number": "2",
        "name": "RST",
        "type": "output",
        "description": "Active-low reset output (push-pull). Asserted (driven low) whenever VCC is below the reset threshold or MR is held low; remains asserted for at least trec (~140 ms) after the fault clears. Guaranteed valid down to VCC = 1 V; both sources and sinks current."
      },
      {
        "number": "3",
        "name": "MR",
        "type": "input",
        "description": "Manual reset input, active low. A logic low asserts RST and keeps it asserted for trec after MR returns high. Internally pulled up to VCC via a 20 kΩ resistor, so it may be left open if unused; a normally-open push-button to GND provides a manual reset. Optional 0.1 µF cap from MR to GND for noise immunity."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Monitored supply voltage input (typ. 3.0/3.3/5 V depending on threshold variant). A 0.1 µF bypass capacitor to VSS mounted close to this pin is recommended for transient immunity."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.st.com/resource/en/datasheet/stm811sw16f.pdf",
        "pages": 21,
        "sha256": "24f3f88facdeb210",
        "source_tier": "mfr"
      },
      "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": "stm811sw16f.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": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "b35b433c0dc71ac416a9c731e744d2e0610f82ebe97275830f0e17cdcbe44512",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stm811sw16f-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": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "704b6861e43e379d868ca30737d5cc52a74c3ce077212ac49b915021abb36e29",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "SOT-143",
      "Category": "PMIC",
      "Pins": "4"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "stm811sw16f"
  ],
  "discovery_pitch": "STM811SW16F (STMicroelectronics) 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",
    "stm811sw16f.kicad_sym",
    "stm811sw16f.kicad_mod",
    "stm811sw16f.glb",
    "stm811sw16f.step",
    "stm811sw16f-etched.step",
    "stm811sw16f.lbr",
    "docs/hero.png",
    "docs/stm811sw16f-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "STM811SW16F",
      "kind": "packaging"
    },
    {
      "mpn": "STM812SW16F",
      "kind": "unknown"
    },
    {
      "mpn": "STM811LW16F",
      "kind": "unknown"
    },
    {
      "mpn": "STM811MW16F",
      "kind": "unknown"
    },
    {
      "mpn": "STM811RW16F",
      "kind": "unknown"
    },
    {
      "mpn": "STM811TW16F",
      "kind": "unknown"
    },
    {
      "mpn": "STM809xW16F",
      "kind": "unknown"
    },
    {
      "mpn": "STM810xW16F",
      "kind": "unknown"
    }
  ],
  "updated_at": "2026-09-25T08:58:41.278Z"
}