CBM811ZST4

{
  "slug": "cbm811zst4",
  "version": "0.1.0",
  "type": "component",
  "description": "Corebai Microelectronics Monitors & Reset Circuits, SOT-143-4. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "cbm811zst4",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cbm811zst4.kicad_sym",
    "cbm811zst4.kicad_mod",
    "cbm811zst4.glb",
    "cbm811zst4.step",
    "cbm811zst4.lbr",
    "docs/hero.png",
    "docs/cbm811zst4-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cbm811zst4-hero.glb",
    "cbm811zst4-hero.overlay.json",
    "cbm811zst4-etched.glb"
  ],
  "component": {
    "mpn": "CBM811ZST4",
    "manufacturer": "Corebai Microelectronics",
    "package": "SOT-143-4",
    "pin_count": 4,
    "category": "Power Supply Chip",
    "subcategory": "Monitors & Reset Circuits",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a57331e232051d8f5063058711454dba.pdf",
    "parts": {
      "symbol": "cbm811zst4.kicad_sym",
      "footprint": "cbm811zst4.kicad_mod",
      "model_3d": "cbm811zst4-hero.glb",
      "model_3d_plain": "cbm811zst4-etched.glb",
      "model_3d_step": "cbm811zst4-etched.step",
      "model_3d_step_plain": "cbm811zst4.step",
      "lbr": "cbm811zst4.lbr"
    },
    "distributor_links": {
      "lcsc": "C5444537"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T12:02:34Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground, 0 V supply reference."
      },
      {
        "number": "2",
        "name": "RESET",
        "type": "output",
        "description": "Active-low logic reset output (CBM811 variant); stays asserted low down to VCC = 1 V and is held active for about 240 ms (typ) after VCC rises above the reset threshold."
      },
      {
        "number": "3",
        "name": "MR",
        "type": "input",
        "description": "Debounced manual reset input; signals shorter than 100 ns are ignored and inputs longer than 10 µs trigger a reset, with an internal pull-up of 10 to 30 kΩ."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Monitored supply voltage input (2.5 V, 3 V, 3.3 V or 5 V systems); absolute maximum -0.3 V to +6 V, with a 2.32 V reset threshold for the CBM811Z."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pin table prints pin 2 with both RESET (active low) and RESET-bar/active-high (CBM812) entries, ; The datasheet gives conflicting reset timeout values: 140 ms min on page 1 and 240 ms typ on page 8.; The electrical characteristics table header says CBMG708/CBMG709, which looks like a copy-paste erro"
        ],
        "pages_sent": 10,
        "cost_usd": 0.0516,
        "at": "2026-10-23T12:02:09"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/a57331e232051d8f5063058711454dba.pdf",
        "pages": 10,
        "sha256": "eca50a375d8a7fde",
        "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": "cbm811zst4.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": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cbm811zst4-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": "946182e94cf1ab241241e98e0a7712ccfcb0f89ee5f25fa2351f4f75fba85d11",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}