main
Ray Set visibility: public 32f4072 17d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "mmbz18valt1g",
  "title": "MMBZ18VALT1G",
  "brief": "onsemi ESD And Surge Protection (TVS/ESD), 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": [
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    "extractor-text"
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  "component": {
    "mpn": "MMBZ18VALT1G",
    "manufacturer": "onsemi",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Circuit Protection",
    "subcategory": "ESD And Surge Protection (TVS/ESD)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586178769346301952",
    "parts": {
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      "footprint": "mmbz18valt1g.kicad_mod",
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      "lbr": "mmbz18valt1g.lbr"
    },
    "distributor_links": {
      "lcsc": "C94405",
      "digikey": "MMBZ18VALT1GOSTR-ND",
      "mouser": "863-MMBZ18VALT1G"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T01:13:33Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "MMBZ18VALT1GOSTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "863-MMBZ18VALT1G",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CATHODE 1",
        "type": "passive",
        "description": "Cathode of the first Zener junction; with pin 3 (anode) it forms one unidirectional TVS, with a working peak reverse voltage of 14.5 V and a breakdown voltage of 17.10 V to 18.90 V for the MMBZ18VALT1G."
      },
      {
        "number": "2",
        "name": "CATHODE 2",
        "type": "passive",
        "description": "Cathode of the second Zener junction; with pin 3 (anode) it forms the second unidirectional TVS, with the same MMBZ18VALT1G ratings as pin 1."
      },
      {
        "number": "3",
        "name": "ANODE",
        "type": "passive",
        "description": "Common anode shared by both Zener junctions, so the package protects two separate lines in one SOT-23 package."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
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        "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: Pin numbers and names come from the Style 12 drawing on page 7 and the SOT-23 pin callout on page 1;; Pin types are set to passive, the KiCad class for two-terminal Zener diode terminals; the datasheet ",
          "1/3 pins cited to the wrong page (name found elsewhere): ['1:CATHODE 1@p7']"
        ],
        "pages_sent": 7,
        "cost_usd": 0.0492,
        "at": "2026-10-18T01:10:26"
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      "datasheet": {
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        "pages": 7,
        "sha256": "a000c92c23393615",
        "source_tier": "lcsc"
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      "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"
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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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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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        "sha256": "102252cd8cc0399594abc72ab34afa3b468fea546a53c2bed88d98121a6cb4f1",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "SOT-23",
      "Category": "Circuit Protection",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "a000c92c23393615f2689e5c420cc962b9c5e46c4cb3ae98434accfe931ea5b8",
      "rows": [
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          "name": "Breakdown Voltage",
          "symbol": "VBR",
          "kind": "electrical",
          "unit": "V",
          "min": 17.1,
          "typ": 18,
          "max": 18.9,
          "conditions": "@ IT = 1.0 mA, TA = 25°C (Note 4); 40 W 5% table",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Breakdown voltage tolerance (printed 5% tolerance)",
          "symbol": "VBR",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "40 W, 5% tolerance table",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum Reverse Leakage Current",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "@ VRWM = 14.5 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Clamping Voltage",
          "symbol": "VC",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 25,
          "conditions": "@ IPP = 1.6 A (surge per Figure 6, Note 6)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum Reverse Peak Pulse Current",
          "symbol": "IPP",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 1.6,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Working Peak Reverse Voltage",
          "symbol": "VRWM",
          "kind": "recommended_operating",
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          "conditions": "",
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        },
        {
          "name": "Maximum Temperature Coefficient of VBR",
          "symbol": "",
          "kind": "temperature_coefficient",
          "unit": "mV/°C",
          "min": null,
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          "max": 15.3,
          "conditions": "@ IT = 1.0 mA",
          "source_page": 3,
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        },
        {
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          "conditions": "@ IF = 10 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Peak Power Dissipation",
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          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "@ 1.0 ms, TL ≤ 25°C, non-repetitive (Note 1); MMBZ12V thru MMBZ47V group",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Total Power Dissipation on FR-5 Board",
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          "max": 225,
          "conditions": "@ TA = 25°C (Note 2)",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Total Power Dissipation on Alumina Substrate",
          "symbol": "PD",
          "kind": "absolute_maximum",
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          "typ": null,
          "max": 300,
          "conditions": "@ TA = 25°C (Note 3)",
          "source_page": 2,
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          "min": null,
          "typ": null,
          "max": 417,
          "conditions": "Alumina substrate (Note 3)",
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          "source": "datasheet"
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          "name": "Junction and Storage Temperature Range",
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          "conditions": "",
          "source_page": 2,
          "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": 2,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_triggers": [
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  "discovery_pitch": "MMBZ18VALT1G (onsemi) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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