BS170

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  "title": "BS170",
  "brief": "onsemi MOSFETs, TO-92. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "category": "Transistors/Thyristors",
    "subcategory": "MOSFETs",
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    "distributor_links": {
      "lcsc": "C111691",
      "digikey": "BS170-ND",
      "mouser": "512-BS170"
    },
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      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "BS170-ND",
        "status": "found",
        "lifecycle": "Active"
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    },
    "pins": [
      {
        "number": "1",
        "name": "D",
        "type": "passive",
        "description": "Drain; rated for 60 V drain-source voltage (VDSS) and 500 mA continuous (1200 mA pulsed) drain current."
      },
      {
        "number": "2",
        "name": "G",
        "type": "input",
        "description": "Gate; voltage-controlled input rated for ±20 V gate-source voltage, with gate threshold of 0.8 V min to 3 V max at VDS = VGS, ID = 1 mA."
      },
      {
        "number": "3",
        "name": "S",
        "type": "passive",
        "description": "Source; the reference terminal for gate drive, with 60 V maximum drain-source voltage and 500 mA continuous current."
      }
    ],
    "provenance": {
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        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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        "cost_usd": 0.0599,
        "at": "2026-10-09T11:11:39"
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      "datasheet": {
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        "pages": 16,
        "sha256": "3011eb5e950a918e",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
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        "described": 3,
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      }
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    "viewers": {
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        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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        "zmin_mm": -2.5,
        "centre_offset_mm": 0.542,
        "footprint_binding": "identity",
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        "checked": "2026-10-09",
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  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "TO-92",
      "Category": "Transistors/Thyristors",
      "Pins": "3"
    },
    "characteristics": {
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          "name": "Drain-Source Voltage",
          "symbol": "VDSS",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 60,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Drain-Gate Voltage",
          "symbol": "VDGR",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 60,
          "conditions": "RGS ≤ 1MΩ",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Gate-Source Voltage",
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          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "",
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        },
        {
          "name": "Drain Current - Continuous",
          "symbol": "ID",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Drain Current - Pulsed (BS170 column)",
          "symbol": "ID",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 1200,
          "conditions": "",
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        },
        {
          "name": "Maximum Power Dissipation",
          "symbol": "PD",
          "kind": "thermal",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 830,
          "conditions": "TA = 25°C",
          "source_page": 2,
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        },
        {
          "name": "Operating and Storage Temperature Range",
          "symbol": "TJ, TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Maximum Lead Temperature for Soldering",
          "symbol": "TL",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "1/16\" from case for 10 seconds",
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          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, Junction to Ambient (BS170 column)",
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          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
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          "max": null,
          "conditions": "",
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        },
        {
          "name": "Drain-Source Breakdown Voltage",
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          "kind": "electrical",
          "unit": "V",
          "min": 60,
          "typ": null,
          "max": null,
          "conditions": "VGS = 0V, ID = 100μA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Zero Gate Voltage Drain Current",
          "symbol": "IDSS",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "VDS = 25V, VGS = 0V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Gate - Body Leakage, Forward",
          "symbol": "IGSSF",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "VGS = 15V, VDS = 0V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Gate Threshold Voltage",
          "symbol": "VGS(th)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.8,
          "typ": 2.1,
          "max": 3,
          "conditions": "VDS = VGS, ID = 1mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Static Drain-Source On-Resistance",
          "symbol": "RDS(ON)",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 1.2,
          "max": 5,
          "conditions": "VGS = 10V, ID = 200mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Capacitance",
          "symbol": "Ciss",
          "kind": "electrical",
          "unit": "pF",
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          "typ": 24,
          "max": 40,
          "conditions": "VDS = 10V, VGS = 0V, f = 1.0MHz",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Capacitance",
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          "kind": "electrical",
          "unit": "pF",
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          "typ": 17,
          "max": 30,
          "conditions": "VDS = 10V, VGS = 0V, f = 1.0MHz",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Reverse Transfer Capacitance",
          "symbol": "Crss",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 7,
          "max": 10,
          "conditions": "VDS = 10V, VGS = 0V, f = 1.0MHz",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Forward Transconductance (BS170)",
          "symbol": "gFS",
          "kind": "electrical",
          "unit": "mS",
          "min": null,
          "typ": 320,
          "max": null,
          "conditions": "VDS = 10V, ID = 200mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Turn-On Time (BS170)",
          "symbol": "ton",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "VDD = 25V, ID = 200mA, VGS = 10V, RGEN = 25Ω",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Turn-Off Time (BS170)",
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          "min": null,
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          "max": null,
          "conditions": "VDD = 25V, ID = 200mA, VGS = 10V, RGEN = 25Ω",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "BS170 (onsemi) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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