main
Ray Set visibility: public 0011033
{
  "schema_version": 1,
  "type": "component",
  "slug": "ch912tb",
  "title": "CH912TB",
  "brief": "COSEMITECH Magnetic Sensors, TO-92S. 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",
    "sensors",
    "ch912tb",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CH912TB",
    "manufacturer": "COSEMITECH",
    "package": "TO-92S",
    "pin_count": 3,
    "category": "Sensors",
    "subcategory": "Magnetic Sensors",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/07ba009c7686ddfc77952725d6273709.pdf",
    "parts": {
      "symbol": "ch912tb.kicad_sym",
      "footprint": "ch912tb.kicad_mod",
      "model_3d": "ch912tb-hero.glb",
      "model_3d_plain": "ch912tb-etched.glb",
      "model_3d_step": "ch912tb-etched.step",
      "model_3d_step_plain": "ch912tb.step",
      "lbr": "ch912tb.lbr"
    },
    "distributor_links": {
      "lcsc": "C2879984"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T06:16:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply voltage pin, operating range 1.8V to 5.25V (absolute maximum 6 V), with a 0.1uF external capacitor recommended."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "3",
        "name": "OUT",
        "type": "output",
        "description": "Push-pull output pin that goes low when the magnetic field exceeds BOP and high when it falls below BRP, with 1 mA output current capability."
      }
    ],
    "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 on page 3 maps TO-92S pin 2 to GND and pin 3 to OUT (SOT-23-3L is the opposite). The p"
        ],
        "pages_sent": 9,
        "cost_usd": 0.0539,
        "at": "2026-10-23T06:15:47"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/07ba009c7686ddfc77952725d6273709.pdf",
        "pages": 9,
        "sha256": "3500bb01b04ebb8d",
        "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": "ch912tb.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          4.83,
          3.745,
          9.8
        ],
        "zmin_mm": -2.5,
        "centre_offset_mm": 0.542,
        "footprint_binding": "identity",
        "sha256": "f0b61c32ecbf0067157adc5a3d4966ceadf5d6dafe93c51af35f76c41c71a54a",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ch912tb-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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          3.745,
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        ],
        "zmin_mm": -2.5,
        "centre_offset_mm": 0.542,
        "footprint_binding": "identity",
        "sha256": "451ea9a37f7c94ac5f46c8d98f18bd94f0cb8a01211e50ad0b3b3d14816257f0",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "COSEMITECH",
      "Package": "TO-92S",
      "Category": "Sensors",
      "Pins": "3"
    },
    "appearance": {
      "contacts": {
        "quote": "Two package styles provide a magnetically optimized package for most applications, SOT-23 and TO￾92S. Each package type is lead (Pb) free (suffix, –T), with a 100% matte-tin-plated leadframe. Cosemite",
        "page": 1,
        "doc": "ds.pdf",
        "plating": "tin"
      },
      "version": 1,
      "datasheet_sha256": "3500bb01b04ebb8d1e51a50346d29e4760be18d2fa66632fed32d33e82bbf4df"
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    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "3500bb01b04ebb8d1e51a50346d29e4760be18d2fa66632fed32d33e82bbf4df",
      "rows": [
        {
          "name": "Supply Voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.8,
          "typ": null,
          "max": 5.25,
          "conditions": "Operating, TJ < 165°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply Current awake (CH912)",
          "symbol": "ICC(awake)",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.1,
          "max": 1.6,
          "conditions": "During awake period, TA = 25°C, VCC=3.3V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output low voltage (on)",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.1,
          "max": 0.2,
          "conditions": "IOUT =1 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Awake time (CH912)",
          "symbol": "Tawake",
          "kind": "timing",
          "unit": "us",
          "min": null,
          "typ": 40,
          "max": 75,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Period (CH912)",
          "symbol": "Tperiod",
          "kind": "timing",
          "unit": "ms",
          "min": null,
          "typ": 50,
          "max": 100,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Leakage Current",
          "symbol": "IOFF",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "VOUT = 5.25V; Switch state = Off",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operate point",
          "symbol": "Bop",
          "kind": "electrical",
          "unit": "Gauss",
          "min": 20,
          "typ": 33,
          "max": 75,
          "conditions": "VDD = 1.8V to 5.25V, TA = 25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Release point",
          "symbol": "Brp",
          "kind": "electrical",
          "unit": "Gauss",
          "min": 10,
          "typ": 23,
          "max": 65,
          "conditions": "VDD = 1.8V to 5.25V, TA = 25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply Voltage",
          "symbol": "VDD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VDD Reverse Voltage",
          "symbol": "VRDD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply Current",
          "symbol": "IDD",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage",
          "symbol": "VOUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Max printed as VDD+0.3",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Current",
          "symbol": "IOUT",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating Ambient Temperature",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "TS",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -50,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -50,
          "typ": null,
          "max": 165,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply Current sleep (CH912)",
          "symbol": "ICC(sleep)",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 0.7,
          "max": null,
          "conditions": "During sleep period, TA = 25°C, VCC=3.3V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Average supply current (CH912)",
          "symbol": "ICC(avg)",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 1.09,
          "max": null,
          "conditions": "TA = 25°C, VDD = 1.8V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Average supply current (CH912)",
          "symbol": "ICC(avg)",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 1.62,
          "max": null,
          "conditions": "TA = 25°C, VDD = 3.3V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Duty cycle (CH912)",
          "symbol": "D.C.",
          "kind": "timing",
          "unit": "%",
          "min": null,
          "typ": 0.08,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Chopping Frequency",
          "symbol": "fC",
          "kind": "timing",
          "unit": "kHz",
          "min": null,
          "typ": 500,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Hysteresis",
          "symbol": "Hys",
          "kind": "electrical",
          "unit": "Gauss",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "VDD = 1.8V to 5.25V, TA = 25°C",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
  },
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    "viewers",
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    "info"
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  "discovery_triggers": [
    "ch912tb"
  ],
  "discovery_pitch": "CH912TB (COSEMITECH) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
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    "path": "docs/hero.png"
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    "ch912tb-etched.glb"
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  "visibility": {
    "public": true
  }
}