BSD3C121L

{
  "schema_version": 1,
  "type": "component",
  "slug": "bsd3c121l",
  "title": "BSD3C121L",
  "brief": "BORN ESD And Surge Protection (TVS/ESD), SOD-323. 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",
    "circuit protection",
    "bsd3c121l",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BSD3C121L",
    "manufacturer": "BORN",
    "package": "SOD-323",
    "pin_count": 2,
    "category": "Circuit Protection",
    "subcategory": "ESD And Surge Protection (TVS/ESD)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588880608223236096",
    "parts": {
      "symbol": "bsd3c121l.kicad_sym",
      "footprint": "bsd3c121l.kicad_mod",
      "model_3d": "bsd3c121l-hero.glb",
      "model_3d_plain": "bsd3c121l-etched.glb",
      "model_3d_step": "bsd3c121l-etched.step",
      "model_3d_step_plain": "bsd3c121l.step",
      "lbr": "bsd3c121l.lbr"
    },
    "distributor_links": {
      "lcsc": "C151993"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T17:37:54Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1",
        "type": "passive",
        "description": "TVS terminal 1 of the single protected line (VWM 12.0V, min VBR 13.3V @ 1mA, max VC 19.0V @ IP=1A, 350W peak pulse power 8/20μs)."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "TVS terminal 2 of the single protected line (VWM 12.0V, min VBR 13.3V @ 1mA, max VC 19.0V @ IP=1A, 350W peak pulse power 8/20μs)."
      }
    ],
    "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",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet pin configuration drawing shows only pin numbers 1 and 2 for unidirectional and bidire"
        ],
        "pages_sent": 4,
        "cost_usd": 0.042,
        "at": "2026-10-22T17:37:01"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588880608223236096",
        "pages": 4,
        "sha256": "69bb5803b335e2b4",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 2,
        "described": 2,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "bsd3c121l.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          1.25,
          1.11
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "cd8619b2119cd95683a2c5e660ab4f2d4db674f696cd6f9e9756f221171a214d",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bsd3c121l-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          1.25,
          1.11
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "a5c69fadf4ac6b9b90bf4fb987889ca7924fb335bf15f2bd7d5b8db7c3352058",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "BORN",
      "Package": "SOD-323",
      "Category": "Circuit Protection",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "69bb5803b335e2b41d5686d2c499badb886b053c7f4663d1f924f736f9ca13bd",
      "rows": [
        {
          "name": "Peak Pulse Power",
          "symbol": "PPP",
          "kind": "absolute_maximum",
          "unit": "Watts",
          "min": null,
          "typ": null,
          "max": 350,
          "conditions": "tp=8/20μs",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature (Junction)",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Rated Stand-off Voltage",
          "symbol": "VWM",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 12,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Minimum Breakdown Voltage",
          "symbol": "VBR",
          "kind": "electrical",
          "unit": "V",
          "min": 13.3,
          "typ": null,
          "max": null,
          "conditions": "@ 1mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Clamping Voltage",
          "symbol": "VC",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 19,
          "conditions": "@ IP = 1A",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Clamping Voltage",
          "symbol": "VC",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 28.6,
          "conditions": "@ 8/20μs, IPP = 11.0A",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Leakage Current",
          "symbol": "Id",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "@VWM",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Typical Capacitance",
          "symbol": "C",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "@0V, 1 MHz",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bsd3c121l"
  ],
  "discovery_pitch": "BSD3C121L (BORN) 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",
    "bsd3c121l.kicad_sym",
    "bsd3c121l.kicad_mod",
    "bsd3c121l.glb",
    "bsd3c121l.step",
    "bsd3c121l.lbr",
    "docs/hero.png",
    "docs/bsd3c121l-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bsd3c121l-hero.glb",
    "bsd3c121l-hero.overlay.json",
    "bsd3c121l-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}