main
Ray Set visibility: public 27860f1 4h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "pesd3v3l1ub",
  "title": "PESD3V3L1UB",
  "brief": "UMW Electrostatic And Surge Protection (TVS/ESD), SOD-523. 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",
    "tvs-fuse-board level protection",
    "pesd3v3l1ub",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "PESD3V3L1UB",
    "manufacturer": "UMW",
    "package": "SOD-523",
    "pin_count": 2,
    "category": "TVS/Fuse/Board Level Protection",
    "subcategory": "Electrostatic And Surge Protection (TVS/ESD)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/4964032f923ae8443c0e3dd1c38d71ba.pdf",
    "parts": {
      "symbol": "pesd3v3l1ub.kicad_sym",
      "footprint": "pesd3v3l1ub.kicad_mod",
      "model_3d": "pesd3v3l1ub-hero.glb",
      "model_3d_plain": "pesd3v3l1ub-etched.glb",
      "model_3d_step": "pesd3v3l1ub-etched.step",
      "model_3d_step_plain": "pesd3v3l1ub.step",
      "lbr": "pesd3v3l1ub.lbr"
    },
    "distributor_links": {
      "lcsc": "C3001945"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T04:54:23Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Pin 1",
        "type": "passive",
        "description": "Pin 1 is one of the two terminals of the unidirectional ESD protection diode, with limits between pin 1 and pin 2 of VRWM 3.3 V, VCL 11 V at IPP 1 A, and ESD protection up to 30 kV (IEC 61000-4-2 level 4)."
      },
      {
        "number": "2",
        "name": "Pin 2",
        "type": "passive",
        "description": "Pin 2 is the other terminal of the unidirectional ESD protection diode; the datasheet measures all electrical limits from pin 1 to pin 2, including peak pulse current 4.5 A (8/20 µs) and diode capacitance 34 pF."
      }
    ],
    "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's SOD-523 pinning drawing shows only the labels 'Pin1' and 'Pin2' and does not state w; The pin descriptions are built from device-level limits that the datasheet states between pin 1 and "
        ],
        "pages_sent": 7,
        "cost_usd": 0.0208,
        "at": "2026-10-21T04:50:27"
      },
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        "url": "https://datasheet.lcsc.com/datasheet/pdf/4964032f923ae8443c0e3dd1c38d71ba.pdf",
        "pages": 7,
        "sha256": "c423f3cf667af361",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 2,
        "described": 2,
        "cites_pages": true,
        "refuses_to_fabricate": true
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          0.63
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "b525222377930c32abea58606bffba3aaf171cc66ac292b82d28a82d646d995d",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
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        "origin": "footprint origin = pad-pattern centre",
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        "sha256": "18d5fd1cf0b6c6977441fba5a32bf279cbb1c35b424cf1ef7db2e5087974b64a",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "UMW",
      "Package": "SOD-523",
      "Category": "TVS/Fuse/Board Level Protection",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "c423f3cf667af361103f65bcc295075a14b878f8ddd5b7102958762271e8cb22",
      "rows": [
        {
          "name": "Peak pulse power",
          "symbol": "PPP",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 45,
          "conditions": "tp=8/20μs",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Peak pulse current",
          "symbol": "IPP",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 4.5,
          "conditions": "tp=8/20μs",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Ambient temperature",
          "symbol": "Tamb",
          "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": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Electrostatic discharge voltage (IEC 61000-4-2 contact discharge)",
          "symbol": "VESD",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "IEC 61000-4-2 (contact discharge)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Electrostatic discharge voltage (machine model)",
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          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 400,
          "conditions": "machine model",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Electrostatic discharge voltage (human body model)",
          "symbol": "VESD",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": null,
          "max": 16,
          "conditions": "MIL-STD-883 (human body model)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Breakdown voltage",
          "symbol": "VBR",
          "kind": "electrical",
          "unit": "V",
          "min": 5.3,
          "typ": 5.6,
          "max": 6,
          "conditions": "IR=1mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Reverse leakage current",
          "symbol": "IRM",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "VRWM=3.3V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Reverse standoff voltage",
          "symbol": "VRWM",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 3.3,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Diode capacitance",
          "symbol": "Cd",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 34,
          "max": 40,
          "conditions": "VR=0V, f=1MHz",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Clamping voltage",
          "symbol": "VCL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "IPP=1A",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Clamping voltage",
          "symbol": "VCL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 11,
          "conditions": "IPP=4.5A",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Forward voltage",
          "symbol": "VF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.2,
          "conditions": "IF=200mA",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  ],
  "discovery_pitch": "PESD3V3L1UB (UMW) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "path": "docs/hero.png"
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  "files": [
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  "visibility": {
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}