main
Ray Set visibility: public 0284b19 17d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "b72520t0500k062",
  "title": "B72520T0500K062",
  "brief": "TDK Varistors, 1206. 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",
    "b72520t0500k062",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "B72520T0500K062",
    "manufacturer": "TDK",
    "package": "1206",
    "pin_count": 2,
    "category": "Circuit Protection",
    "subcategory": "Varistors",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588905101234331648",
    "parts": {
      "symbol": "b72520t0500k062.kicad_sym",
      "footprint": "b72520t0500k062.kicad_mod",
      "model_3d": "b72520t0500k062-hero.glb",
      "model_3d_plain": "b72520t0500k062-etched.glb",
      "model_3d_step": "b72520t0500k062-etched.step",
      "model_3d_step_plain": "b72520t0500k062.step",
      "lbr": "b72520t0500k062.lbr"
    },
    "distributor_links": {
      "lcsc": "C210940"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T18:55:45Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1",
        "type": "passive",
        "description": "Terminal 1 of the bidirectional single-chip varistor (CT1206K50G), VRMS,max 50 V, VDC,max 65 V, Isurge,max 100 A (8/20 µs); connect in parallel with the circuit to be protected."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "Terminal 2 of the bidirectional single-chip varistor (CT1206K50G), interchangeable with terminal 1 as protection is bidirectional; Vclamp,max 135 V at 1 A."
      }
    ],
    "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 datasheet shows a two-terminal chip varistor with no pin numbers or names. Pins 1 and 2 are assi; MPN B72520T0500K062 maps to CT1206K50G (EIA 1206 / 3216 metric) on pages 8 and 12-13, consistent wit",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 79,
        "cost_usd": 0.2518,
        "at": "2026-10-18T18:53:13"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588905101234331648",
        "pages": 79,
        "sha256": "9a351af2269c4e94",
        "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": "b72520t0500k062.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.2,
          1.6,
          0.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f5d1ea5c47935091292bd1c6c698e0df88d3d4bbf92bf66b4c97e49df5be9ebc",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "b72520t0500k062-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.2,
          1.6,
          0.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "d93a80901bff3ea4bfa232f87c09297caab27aa7a61cf4d69b29c4b01a6e99c0",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "TDK",
      "Package": "1206",
      "Category": "Circuit Protection",
      "Pins": "2"
    },
    "appearance": {
      "contacts": {
        "quote": "Silver-platinum terminations are mainly used for the large EIA case sizes 1812 and 2220. The sil￾ver-platinum termination is approved for reflow soldering, SnPb soldering and lead-free soldering with ",
        "page": 64,
        "doc": "ds.pdf",
        "plating": "silver"
      },
      "version": 1,
      "datasheet_sha256": "9a351af2269c4e94d0591c090f3603e57eea0b1d9857f8d1fb4b2855575da09c"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "9a351af2269c4e94d0591c090f3603e57eea0b1d9857f8d1fb4b2855575da09c",
      "rows": [
        {
          "name": "Maximum RMS operating voltage",
          "symbol": "VRMS,max",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Maximum DC operating voltage",
          "symbol": "VDC,max",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 65,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Maximum surge current",
          "symbol": "Isurge,max",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "8/20 µs",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Maximum energy absorption",
          "symbol": "Wmax",
          "kind": "absolute_maximum",
          "unit": "mJ",
          "min": null,
          "typ": null,
          "max": 600,
          "conditions": "2 ms",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Maximum power dissipation",
          "symbol": "Pdiss,max",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Maximum operating temperature",
          "symbol": "Top,max",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "Top",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 125,
          "conditions": "case size ≥ 0603",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "LCT/UCT",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "case size ≥ 0603",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Response time",
          "symbol": "tresp",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Tolerance of varistor voltage",
          "symbol": "∆VV",
          "kind": "tolerance",
          "unit": "%",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "TA = 25 °C",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Maximum clamping voltage",
          "symbol": "Vclamp,max",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 135,
          "conditions": "Iclamp = 1 A (8/20 µs)",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Varistor voltage",
          "symbol": "VV",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 82,
          "max": null,
          "conditions": "1 mA; TA = 25 °C",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Typical capacitance",
          "symbol": "Ctyp",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 120,
          "max": null,
          "conditions": "@ 1 V; f = 1 kHz (C ≥ 100 pF)",
          "source_page": 9,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "b72520t0500k062"
  ],
  "discovery_pitch": "B72520T0500K062 (TDK) 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",
    "b72520t0500k062.kicad_sym",
    "b72520t0500k062.kicad_mod",
    "b72520t0500k062.glb",
    "b72520t0500k062.step",
    "b72520t0500k062.lbr",
    "docs/hero.png",
    "docs/b72520t0500k062-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "b72520t0500k062-hero.glb",
    "b72520t0500k062-hero.overlay.json",
    "b72520t0500k062-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}