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Ray Set visibility: public 50c8a42 11d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "cjsmf54a",
  "title": "CJSMF54A",
  "brief": "Changjing ESD And Surge Protection (TVS/ESD), SOD-123FL. 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",
    "cjsmf54a",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CJSMF54A",
    "manufacturer": "Changjing",
    "package": "SOD-123FL",
    "pin_count": 2,
    "category": "Circuit Protection",
    "subcategory": "ESD And Surge Protection (TVS/ESD)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/b725d32b4df757818d8175a4233d5b93.pdf",
    "parts": {
      "symbol": "cjsmf54a.kicad_sym",
      "footprint": "cjsmf54a.kicad_mod",
      "model_3d": "cjsmf54a-hero.glb",
      "model_3d_plain": "cjsmf54a-etched.glb",
      "model_3d_step": "cjsmf54a-etched.step",
      "model_3d_step_plain": "cjsmf54a.step",
      "lbr": "cjsmf54a.lbr"
    },
    "distributor_links": {
      "lcsc": "C7499018"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T09:54:50Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "K",
        "type": "passive",
        "description": "Cathode, marked by the cathode band on this uni-directional part (CJSMF54A: VRWM 54 V, VBR 60.24-66.25 V at 1 mA, max clamping 86.2 V at 2.3 A IPP)."
      },
      {
        "number": "2",
        "name": "A",
        "type": "passive",
        "description": "Anode, the end opposite the cathode band; the TVS conducts in reverse from anode to cathode, with 200 W peak pulse power (10/1000us) and max 5 uA leakage at 54 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",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet has no pin table and prints no pin numbers. It only shows a cathode band for uni-direc; CJSMF54A is the uni-directional (A suffix) part and is polarized. The bi-directional CJSMF54CA has n"
        ],
        "pages_sent": 5,
        "cost_usd": 0.0339,
        "at": "2026-10-22T09:53:39"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/b725d32b4df757818d8175a4233d5b93.pdf",
        "pages": 5,
        "sha256": "0e3445de771b166a",
        "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": "cjsmf54a.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.5,
          1.6,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "132323445e3d1f9231e81c083cd88a33cd204dd8b96063bb2ed1f3ab4470c7e7",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cjsmf54a-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.5,
          1.6,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "d683f98a9d2cd1bf0c9fea26794e592e2ce3a2966cf2529f52476963f16ab817",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Changjing",
      "Package": "SOD-123FL",
      "Category": "Circuit Protection",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "0e3445de771b166af2ec76b4a4eb0a60ff0346f753f8432e28d863fc49b28cf3",
      "rows": [
        {
          "name": "Breakdown voltage",
          "symbol": "VBR",
          "kind": "electrical",
          "unit": "V",
          "min": 60.24,
          "typ": null,
          "max": 66.25,
          "conditions": "@IT = 1 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Reverse standoff voltage",
          "symbol": "VRWM",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 54,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Max reverse leakage",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "@VRWM, UNI",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Max clamping voltage",
          "symbol": "VC",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 86.2,
          "conditions": "@Ipp = 2.3 A",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Max peak pulse current",
          "symbol": "IPP",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 2.3,
          "conditions": "10/1000us waveform",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum instantaneous forward voltage",
          "symbol": "VF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 3.5,
          "conditions": "at 25A for uni-directional only",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Peak pulse power dissipation",
          "symbol": "PPPM",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "with a 10/1000us waveform",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "On infinite heat sink at TL=75℃",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Peak forward surge current",
          "symbol": "IFSM",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "8.3 ms single half sine-wave uni-directional only",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Operating junction and storage temperature range",
          "symbol": "TJ,TSTG",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to lead",
          "symbol": "RθJL",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "junction to lead TL=50℃",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to ambient",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "junction to ambient TA=25℃",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "cjsmf54a"
  ],
  "discovery_pitch": "CJSMF54A (Changjing) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
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    "cjsmf54a.kicad_mod",
    "cjsmf54a.glb",
    "cjsmf54a.step",
    "cjsmf54a.lbr",
    "docs/hero.png",
    "docs/cjsmf54a-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cjsmf54a-hero.glb",
    "cjsmf54a-hero.overlay.json",
    "cjsmf54a-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}