BSR57

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  "type": "component",
  "slug": "bsr57",
  "title": "BSR57",
  "brief": "onsemi JFETs, SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "category": "Transistors/Thyristors",
    "subcategory": "JFETs",
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    "distributor_links": {
      "lcsc": "C890260"
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    "pins": [
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        "number": "1",
        "name": "Drain",
        "type": "output",
        "description": "Drain terminal with maximum drain-gate voltage of 40 V and drain-source on-voltage not exceeding 0.5 V at VGS = 0 V and ID = 10 mA."
      },
      {
        "number": "2",
        "name": "Source",
        "type": "power_in",
        "description": "Source terminal providing the return path and voltage reference for the N-channel JFET."
      },
      {
        "number": "3",
        "name": "Gate",
        "type": "input",
        "description": "Gate terminal with gate-source cut-off voltage range of 2.0 V to 6.0 V and maximum forward gate current rating of 50 mA."
      }
    ],
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        "primary_mode": "text",
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 3,
        "cost_usd": 0.1041,
        "at": "2026-09-17T22:52:57"
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        "total": 3,
        "described": 3,
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        "seat": "z = 0",
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        "zmin_mm": 0.0,
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        "checked": "2026-10-07",
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  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "SOT-23-3",
      "Category": "Transistors/Thyristors",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
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          "name": "Gate-Source Voltage (breakdown)",
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        {
          "name": "Gate Reverse Current",
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          "conditions": "VGS = 20 V, VDS = 0 V",
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        {
          "name": "Zero-Gate Voltage Drain Current",
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          "name": "Drain-Source On Reverse",
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          "name": "Reverse Transfer Capacitance",
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          "name": "Rise Time",
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          "name": "Forward Gate Current",
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          "name": "Junction Temperature",
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  "discovery_pitch": "BSR57 (onsemi) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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  "updated_at": "2026-09-24T18:10:41.761Z"
}