main
Ray Set visibility: public bcf4493 3d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "cbm811zst4",
  "title": "CBM811ZST4",
  "brief": "Corebai Microelectronics Monitors & Reset Circuits, SOT-143-4. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power supply chip",
    "cbm811zst4",
    "factory-2.0.0",
    "extractor-text"
  ],
  "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,
        "centre_offset_mm": 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": [
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          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "946182e94cf1ab241241e98e0a7712ccfcb0f89ee5f25fa2351f4f75fba85d11",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Corebai Microelectronics",
      "Package": "SOT-143-4",
      "Category": "Power Supply Chip",
      "Pins": "4"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "eca50a375d8a7fdeae9fbbf7d1a6fa4832a8540e3705070ab5f4583ee60a8000",
      "rows": [
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "electrical",
          "unit": "V",
          "min": 1,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply current",
          "symbol": "",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 8,
          "max": 15,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reset threshold (CBM811Z)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 2.28,
          "typ": 2.32,
          "max": 2.35,
          "conditions": "TA = −40°C to +85°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reset threshold (CBM811Z), wide limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 2.25,
          "typ": null,
          "max": 2.38,
          "conditions": "TA = −40°C to +85°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Manual reset pull-up resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 10,
          "typ": 20,
          "max": 30,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Manual reset minimum pulse width",
          "symbol": "",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Manual reset glitch immunity",
          "symbol": "",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Manual reset to reset propagation delay",
          "symbol": "",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": 0.5,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "MR input high threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0.7,
          "typ": null,
          "max": null,
          "conditions": "Input greater than 0.7*VCC (printed as 0.7*VCC V)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VCC terminal voltage",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "relative to GND",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VCC input current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "MR input current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "RESET output current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation (SOT-143)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "TA = 70°C; derate 4 mW/°C above 70°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 160,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Lead temperature (soldering, 10 s)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "10 seconds",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ESD rating",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to ambient",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 330,
          "max": null,
          "conditions": "SOT-143",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "cbm811zst4"
  ],
  "discovery_pitch": "CBM811ZST4 (Corebai Microelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
  },
  "files": [
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    "cbm811zst4.step",
    "cbm811zst4.lbr",
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    "docs/cbm811zst4-datasheet.pdf",
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    "cbm811zst4-hero.overlay.json",
    "cbm811zst4-etched.glb"
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  "visibility": {
    "public": true
  }
}