MMBD4448SDW

{
  "schema_version": 1,
  "type": "component",
  "slug": "mmbd4448sdw",
  "title": "MMBD4448SDW",
  "brief": "ST Semtech Switching Diodes, SOT-363. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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  "component": {
    "mpn": "MMBD4448SDW",
    "manufacturer": "ST Semtech",
    "package": "SOT-363",
    "pin_count": 6,
    "category": "Diodes",
    "subcategory": "Switching Diodes",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590197070737793024",
    "parts": {
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      "footprint": "mmbd4448sdw.kicad_mod",
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      "model_3d_plain": "mmbd4448sdw.glb",
      "model_3d_step": "mmbd4448sdw-etched.step",
      "model_3d_step_plain": "mmbd4448sdw.step",
      "lbr": "mmbd4448sdw.lbr"
    },
    "distributor_links": {
      "lcsc": "C2859162",
      "digikey": "4878-MMBD4448SDWCT-ND",
      "mouser": "637-MMBD4448SDW"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T03:59:59Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "4878-MMBD4448SDWCT-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "637-MMBD4448SDW",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "A1",
        "type": "passive",
        "description": "Anode of diode 1; device limits are reverse voltage 80 V and forward continuous current 300 mA at Ta = 25 °C."
      },
      {
        "number": "2",
        "name": "C1",
        "type": "passive",
        "description": "Cathode of diode 1; device limits are reverse voltage 80 V and forward continuous current 300 mA at Ta = 25 °C."
      },
      {
        "number": "3",
        "name": "AC2",
        "type": "passive",
        "description": "Common anode/cathode terminal for diode 2 as labelled AC2; device limits are reverse voltage 80 V and forward continuous current 300 mA at Ta = 25 °C."
      },
      {
        "number": "4",
        "name": "A2",
        "type": "passive",
        "description": "Anode of diode 2; device limits are reverse voltage 80 V and forward continuous current 300 mA at Ta = 25 °C."
      },
      {
        "number": "5",
        "name": "C2",
        "type": "passive",
        "description": "Cathode of diode 2; device limits are reverse voltage 80 V and forward continuous current 300 mA at Ta = 25 °C."
      },
      {
        "number": "6",
        "name": "AC1",
        "type": "passive",
        "description": "Common anode/cathode terminal for diode 1 as labelled AC1; device limits are reverse voltage 80 V and forward continuous current 300 mA at Ta = 25 °C."
      }
    ],
    "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 pin list as 1. A1, 2. C1, 3. AC2, 4. A2, 5. C2, 6. AC1 with no pin-type or f; The 80 V reverse voltage, 300 mA forward continuous current and 200 mW power dissipation are device-; The datasheet lists only the SOT-363 package with its outline and footprint, so the pinout is for th"
        ],
        "pages_sent": 3,
        "cost_usd": 0.0219,
        "at": "2026-10-09T03:58:24"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590197070737793024",
        "pages": 3,
        "sha256": "f781793f4b1a2007",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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    "viewers": {
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      "footprint": "viewers/footprint.html"
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        "role": "plain",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          2,
          1.1
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "045cc95e18ee7a13d1623c3ce6604fc833049bdb4f952f68c26e3c5767d122e4",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mmbd4448sdw-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c0c6c557c0423ef31fadf87b116e31f3f4c7b7b2f647e58c592b82f488019c80",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "ST Semtech",
      "Package": "SOT-363",
      "Category": "Diodes",
      "Pins": "6"
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
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  "discovery_triggers": [
    "mmbd4448sdw"
  ],
  "discovery_pitch": "MMBD4448SDW (ST Semtech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "docs/mmbd4448sdw-datasheet.pdf",
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  "visibility": {
    "public": true
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}