UM811RE

{
  "slug": "um811re",
  "version": "0.1.0",
  "type": "component",
  "description": "Union Semiconductor Supervisor And Reset ICs, SOT-143. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "um811re",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "um811re.kicad_sym",
    "um811re.kicad_mod",
    "um811re.glb",
    "um811re.step",
    "um811re.lbr",
    "docs/hero.png",
    "docs/um811re-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "um811re-hero.glb",
    "um811re-hero.overlay.json",
    "um811re-etched.glb"
  ],
  "component": {
    "mpn": "UM811RE",
    "manufacturer": "Union Semiconductor",
    "package": "SOT-143",
    "pin_count": 4,
    "category": "Power Management (PMIC)",
    "subcategory": "Supervisor And Reset ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603085534382071808",
    "parts": {
      "symbol": "um811re.kicad_sym",
      "footprint": "um811re.kicad_mod",
      "model_3d": "um811re-hero.glb",
      "model_3d_plain": "um811re-etched.glb",
      "model_3d_step": "um811re-etched.step",
      "model_3d_step_plain": "um811re.step",
      "lbr": "um811re.lbr"
    },
    "distributor_links": {
      "lcsc": "C7542916"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T09:55:19Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin for the supervisor."
      },
      {
        "number": "2",
        "name": "RESET",
        "type": "output",
        "description": "Active-low reset output for the UM811 (CMOS push-pull, sources and sinks current); it stays low while VCC is below the reset threshold or while MR is held low, and for the reset active timeout period tRP (140 to 560 ms, 240 ms typical) after reset conditions end."
      },
      {
        "number": "3",
        "name": "MR",
        "type": "input",
        "description": "Active-low manual reset input that asserts reset while low and holds reset for 240 ms after returning high, with an internal 20 kΩ (10 to 30 kΩ) pull-up so it can be left open; for the RE version it is driven with VIH of 0.7×VCC minimum and VIL of 0.25×VCC maximum."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Monitored supply input (+5 V, +3.3 V or +3 V nominal) with an operating range of 1.0 V to 5.5 V and an absolute maximum rating of -0.3 V to +6.0 V."
      }
    ],
    "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: Pin 2 is labelled RESET (UM805/811) and RESET (UM812) in the datasheet. For UM811RE it is the active; The datasheet gives a single SOT-143 pinout for the UM805/811/812 family. No package variant other t"
        ],
        "pages_sent": 14,
        "cost_usd": 0.054,
        "at": "2026-10-18T09:53:25"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603085534382071808",
        "pages": 14,
        "sha256": "2765d38a175c536c",
        "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"
    },
    "models_3d": [
      {
        "file": "um811re.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": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "um811re-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": "ec5bfded418c908305b2a81bf77846f8b38cb04af4e0fcaa3cab4f17bcfad19b",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}