2SB1261-Z

{
  "slug": "2sb1261-z",
  "version": "0.1.0",
  "type": "component",
  "description": "Changjiang Electronics Tech (CJ) Bipolar Transistors - BJT, TO-251-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "transistors",
    "2sb1261-z",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "2sb1261-z.kicad_sym",
    "2sb1261-z.kicad_mod",
    "2sb1261-z.glb",
    "2sb1261-z.step",
    "2sb1261-z.lbr",
    "docs/hero.png",
    "docs/2sb1261-z-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "2sb1261-z-hero.glb",
    "2sb1261-z-hero.overlay.json",
    "2sb1261-z-etched.glb"
  ],
  "component": {
    "mpn": "2SB1261-Z",
    "manufacturer": "Changjiang Electronics Tech (CJ)",
    "package": "TO-251-3L",
    "pin_count": 3,
    "category": "Transistors",
    "subcategory": "Bipolar Transistors - BJT",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/3ad7abd698634f54beae1de54b7a225e.pdf",
    "parts": {
      "symbol": "2sb1261-z.kicad_sym",
      "footprint": "2sb1261-z.kicad_mod",
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      "model_3d_plain": "2sb1261-z-etched.glb",
      "model_3d_step": "2sb1261-z-etched.step",
      "model_3d_step_plain": "2sb1261-z.step",
      "lbr": "2sb1261-z.lbr"
    },
    "distributor_links": {
      "lcsc": "C67998"
    },
    "distributor_check": {
      "checked_at": "2026-10-24T13:02:47Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BASE",
        "type": "input",
        "description": "Base terminal of the PNP transistor, driven with IB1=-IB2=-0.1A in the switching test and -150mA for VCE(sat) and VBE(sat) at IC=-1.5A."
      },
      {
        "number": "2",
        "name": "COLLECTOR",
        "type": "passive",
        "description": "Collector terminal, rated for VCBO and VCEO of -60 V, continuous collector current of -3 A, and collector power dissipation of 1 W."
      },
      {
        "number": "3",
        "name": "EMITTER",
        "type": "passive",
        "description": "Emitter terminal, rated for emitter-base voltage VEBO of -7 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet gives the TO-251-3L pin assignment only as a text list (1. BASE, 2. COLLECTOR, 3. EMIT; The datasheet text covers only the TO-251-3L package and the 2SB1261-Z part. No other package varian"
        ],
        "pages_sent": 2,
        "cost_usd": 0.0124,
        "at": "2026-10-24T13:02:39"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/3ad7abd698634f54beae1de54b7a225e.pdf",
        "pages": 2,
        "sha256": "93e57279f93d8fb2",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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        "role": "plain",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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        ],
        "zmin_mm": -7.335,
        "centre_offset_mm": 0.125,
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        "sha256": "7bb694d087837f077086c278225d603d812ff6a7a8af1db64601db91de627c55",
        "checked": "2026-10-24",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
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}