main
Ray Set visibility: public 2985de9 6d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "mmbz27va",
  "title": "MMBZ27VA",
  "brief": "JSMSEMI TVS, SOT-23. 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",
    "mmbz27va",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "MMBZ27VA",
    "manufacturer": "JSMSEMI",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "TVS/Fuse/Board Level Protection",
    "subcategory": "TVS",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/d8473cbcb71fa28db452964f1d4a43df.pdf",
    "parts": {
      "symbol": "mmbz27va.kicad_sym",
      "footprint": "mmbz27va.kicad_mod",
      "model_3d": "mmbz27va-hero.glb",
      "model_3d_step": "mmbz27va.step",
      "lbr": "mmbz27va.lbr",
      "model_3d_plain": "mmbz27va.glb"
    },
    "distributor_links": {
      "lcsc": "C5366295"
    },
    "distributor_check": {
      "checked_at": "2026-11-04T21:31:15Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "K1",
        "type": "passive",
        "description": "Cathode of the first unidirectional Zener TVS, used with pin 3 (VRWM 22 V, VBR 25.65-28.35 V at 1.0 mA, VC 40 V at 1.0 A for MMBZ27VA)."
      },
      {
        "number": "2",
        "name": "K2",
        "type": "passive",
        "description": "Cathode of the second unidirectional Zener TVS, used with pin 3 (VRWM 22 V, VBR 25.65-28.35 V at 1.0 mA, VC 40 V at 1.0 A for MMBZ27VA)."
      },
      {
        "number": "3",
        "name": "A",
        "type": "passive",
        "description": "Common anode of both Zener TVS diodes; pins 1 and 2 are each tied against it for unidirectional use, or pins 1 and 2 form a single bidirectional device."
      }
    ],
    "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: Datasheet text and the schematic symbol do not explicitly label pin 3 as anode and pins 1/2 as catho",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 5,
        "cost_usd": 0.095,
        "at": "2026-11-04T21:31:10"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/d8473cbcb71fa28db452964f1d4a43df.pdf",
        "pages": 5,
        "sha256": "4c8a4fab17d6f64b",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "mmbz27va.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-11-04",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "JSMSEMI",
      "Package": "SOT-23",
      "Category": "TVS/Fuse/Board Level Protection",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "4c8a4fab17d6f64b70577111792aed65bba1f6e563026e17aca9145f7bc33cae",
      "rows": [
        {
          "name": "Reverse leakage current",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "@ VRWM = 22 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Breakdown voltage",
          "symbol": "VBR",
          "kind": "electrical",
          "unit": "V",
          "min": 25.65,
          "typ": 27,
          "max": 28.35,
          "conditions": "@ IT = 1.0 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Forward voltage",
          "symbol": "VF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.9,
          "conditions": "@ IF = 10 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum temperature coefficient of VBR",
          "symbol": "VBR",
          "kind": "temperature_coefficient",
          "unit": "mV/°C",
          "min": null,
          "typ": null,
          "max": 24.3,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum reverse peak pulse current",
          "symbol": "IPP",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Peak power dissipation",
          "symbol": "PPK",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "@ 1.0 ms, TA = 25 °C; MMBZ12VA thru MMBZ33VA (24 W for MMBZ5V6A thru MMBZ10VA)",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Total power dissipation on FR-5 board",
          "symbol": "PD",
          "kind": "thermal",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 225,
          "conditions": "@ TA = 25 °C, FR-5 board",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Total power dissipation on alumina substrate",
          "symbol": "PD",
          "kind": "thermal",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "@ TA = 25 °C, alumina substrate",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Junction and storage temperature range",
          "symbol": "TJ, TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Lead solder temperature (maximum)",
          "symbol": "TL",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "10 second duration",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Derate above 25 °C, FR-5 board",
          "symbol": "",
          "kind": "thermal",
          "unit": "mW/°C",
          "min": null,
          "typ": 1.8,
          "max": null,
          "conditions": "above TA = 25 °C, FR-5 board",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Derate above 25 °C, alumina substrate",
          "symbol": "",
          "kind": "thermal",
          "unit": "mW/°C",
          "min": null,
          "typ": 2.4,
          "max": null,
          "conditions": "above TA = 25 °C, alumina substrate",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction-to-ambient, FR-5 board",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 556,
          "max": null,
          "conditions": "FR-5 board",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction-to-ambient, alumina substrate",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 417,
          "max": null,
          "conditions": "alumina substrate",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Clamping voltage",
          "symbol": "VC",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 40,
          "max": null,
          "conditions": "@ IPP (1.0 A, per IPP column of same row)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Working peak reverse voltage",
          "symbol": "VRWM",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": 22,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "mmbz27va"
  ],
  "discovery_pitch": "MMBZ27VA (JSMSEMI) 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",
    "mmbz27va.kicad_sym",
    "mmbz27va.kicad_mod",
    "mmbz27va.glb",
    "mmbz27va.step",
    "mmbz27va.lbr",
    "docs/hero.png",
    "docs/mmbz27va-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mmbz27va-hero.glb",
    "mmbz27va-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}