main
Ray Set visibility: public d952a9c 7h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "mjd127d",
  "title": "MJD127D",
  "brief": "Slkor SLKORMICRO Elec Bipolar (BJT), TO-252. 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",
    "transistors-thyristors",
    "mjd127d",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "MJD127D",
    "manufacturer": "Slkor SLKORMICRO Elec",
    "package": "TO-252",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603055960558477312",
    "parts": {
      "symbol": "mjd127d.kicad_sym",
      "footprint": "mjd127d.kicad_mod",
      "model_3d": "mjd127d-hero.glb",
      "model_3d_plain": "mjd127d-etched.glb",
      "model_3d_step": "mjd127d-etched.step",
      "model_3d_step_plain": "mjd127d.step",
      "lbr": "mjd127d.lbr"
    },
    "distributor_links": {
      "lcsc": "C5155435"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T13:25:03Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Base",
        "type": "input",
        "description": "Base of the PNP Darlington; VEBO max -5 V, and the base-emitter saturation voltage is -4.5 V max at IC=-8 A, IB=-80 mA."
      },
      {
        "number": "2",
        "name": "Collector",
        "type": "passive",
        "description": "Collector (also the mounting tab); VCEO -100 V, VCBO -100 V, continuous IC -8 A."
      },
      {
        "number": "3",
        "name": "Emitter",
        "type": "passive",
        "description": "Emitter of the PNP Darlington, with an internal diode to the collector shown in the schematic; emitter cutoff current is -2 mA max at VEB=-5 V."
      }
    ],
    "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+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pin assignment (1 Base, 2 Collector, 3 Emitter) comes from the pinout diagram on page 1. The pag",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 3,
        "cost_usd": 0.2085,
        "at": "2026-10-18T13:22:38"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603055960558477312",
        "pages": 3,
        "sha256": "0e50e18f0ac2a3ac",
        "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": "mjd127d.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.9,
          6.5,
          2.32
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3eb4c99603a4fe837c2fe9308bc174769ded87a785a0df48d2dc441432ee8b4c",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mjd127d-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.9,
          6.5,
          2.32
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c684911e486cd007042516570b2ca2886dd56e88c7055a4a98929642f8fc53f4",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Slkor SLKORMICRO Elec",
      "Package": "TO-252",
      "Category": "Transistors/Thyristors",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "0e50e18f0ac2a3ac613d2fd085ce73ff40b0b8ebd655b2bb14a71d230d7e027b",
      "rows": [
        {
          "name": "Collector-Base Voltage",
          "symbol": "VCBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -100,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Voltage",
          "symbol": "VCEO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -100,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Emitter-Base Voltage",
          "symbol": "VEBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -5,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector Current-Continuous",
          "symbol": "IC",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": -8,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Total Power Dissipation",
          "symbol": "PC",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 1.75,
          "conditions": "@ Ta=25℃",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector Power Dissipation",
          "symbol": "PC",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "TC=25℃",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, Junction to Ambient",
          "symbol": "Rth j-a",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 71.4,
          "max": null,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Breakdown Voltage",
          "symbol": "V(BR)CEO",
          "kind": "electrical",
          "unit": "V",
          "min": -100,
          "typ": null,
          "max": null,
          "conditions": "IC= -30mA; IB= 0",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Saturation Voltage",
          "symbol": "VCE(sat)-1",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -2,
          "conditions": "IC=-4A; IB= -16mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Saturation Voltage",
          "symbol": "VCE(sat)-2",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -4,
          "conditions": "IC=-8A; IB= -80mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Base-Emitter Saturation Voltage",
          "symbol": "VBE(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -4.5,
          "conditions": "IC=-8A; IB= -80mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Base-Emitter voltage",
          "symbol": "VBE(ON)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -2.8,
          "conditions": "IC= -4A; VCE= -4V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector Cutoff Current",
          "symbol": "ICEO",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": -10,
          "conditions": "VCE=-50V; IE= 0",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Emitter Cutoff Current",
          "symbol": "IEBO",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": -2,
          "conditions": "VEB=-5V; IC= 0",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "DC Current Gain",
          "symbol": "hFE1",
          "kind": "electrical",
          "unit": "",
          "min": 1000,
          "typ": null,
          "max": 12000,
          "conditions": "IC= -4A; VCE=- 4V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "DC Current Gain",
          "symbol": "hFE2",
          "kind": "electrical",
          "unit": "",
          "min": 100,
          "typ": null,
          "max": null,
          "conditions": "IC=-8A; VCE= -4V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Capacitance",
          "symbol": "COB",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "IE=0; VCB= -10V; f= 1.0MHz",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "mjd127d"
  ],
  "discovery_pitch": "MJD127D (Slkor SLKORMICRO Elec) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mjd127d.kicad_sym",
    "mjd127d.kicad_mod",
    "mjd127d.glb",
    "mjd127d.step",
    "mjd127d.lbr",
    "docs/hero.png",
    "docs/mjd127d-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mjd127d-hero.glb",
    "mjd127d-hero.overlay.json",
    "mjd127d-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}