M1820B

{
  "schema_version": 1,
  "type": "component",
  "slug": "m1820b",
  "title": "M1820B",
  "brief": "Mysentech Temperature and Humidity Sensor, TO-92S. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "sensor",
    "m1820b"
  ],
  "component": {
    "mpn": "M1820B",
    "manufacturer": "Mysentech",
    "package": "TO-92S",
    "pin_count": 3,
    "category": "Sensor",
    "subcategory": "Temperature and Humidity Sensor",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/ee2e5043d3bbe3229a6780d452685d42.pdf",
    "parts": {
      "symbol": "m1820b.kicad_sym",
      "footprint": "m1820b.kicad_mod",
      "model_3d": "m1820b-etched.glb",
      "model_3d_plain": "m1820b.glb",
      "model_3d_step": "m1820b-etched.step",
      "model_3d_step_plain": "m1820b.step",
      "lbr": "m1820b.lbr"
    },
    "distributor_links": {
      "lcsc": "C2843540"
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V) for the chip. Connect to the system ground plane."
      },
      {
        "number": "2",
        "name": "DQ",
        "type": "bidirectional",
        "description": "1-Wire single-bus data I/O. Open-drain/tri-state pin: requires an external pull-up resistor (typ 4.7 kΩ, 1-10 kΩ; use 1 kΩ for long cables or multi-drop). VIL ≤ 0.3·VDD, VIH ≥ 0.7·VDD; VOL ≤ 0.4 V at IOL = −3 mA. Bus idle state is high; a hold-low > 480 µs resets all devices on the bus."
      },
      {
        "number": "3",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply, 1.8-5.5 V (typ 3.3 V; absolute max 6 V). IDD ≈ 0.1 µA idle (single-shot mode), 450 µA peak during conversion, 4.8 µA average at 1 measurement/s. For long cables or multi-drop networks keep VDD ≥ 3.3 V."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/ee2e5043d3bbe3229a6780d452685d42.pdf",
        "pages": 28,
        "sha256": "aeda39d8ec9e0fa0",
        "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        0,
        0
      ],
      "corner": "bottom-right",
      "source": "pad-position",
      "derived_from": "TO-92_Inline@sha256:19731cf8b8c297aa",
      "mark": "synthesised"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Mysentech",
      "Package": "TO-92S",
      "Category": "Sensor",
      "Pins": "3"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "m1820b"
  ],
  "discovery_pitch": "M1820B (Mysentech) 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",
    "m1820b.kicad_sym",
    "m1820b.kicad_mod",
    "m1820b.glb",
    "m1820b.step",
    "m1820b-etched.step",
    "m1820b.lbr",
    "docs/hero.png",
    "docs/m1820b-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-28T18:19:05.334Z"
}