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Ray Set visibility: public 98f3a3a 2d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "mmbz5270blt1g",
  "title": "MMBZ5270BLT1G",
  "brief": "onsemi Zener Diodes, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "package": "SOT-23",
    "pin_count": 3,
    "category": "Diodes",
    "subcategory": "Zener Diodes",
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      "lbr": "mmbz5270blt1g.lbr"
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    "distributor_links": {
      "lcsc": "C236211"
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    "distributor_check": {
      "checked_at": "2026-10-22T23:08:55Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 664 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
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    },
    "pins": [
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        "number": "1",
        "name": "Anode",
        "type": "passive",
        "description": "Anode of the Zener diode (forward-biased direction is anode to cathode, VF = 0.9 V max at IF = 10 mA); the Zener voltage of the MMBZ5270B is 91 V nominal (86.45 V min to 95.55 V max) at IZT = 1.4 mA."
      },
      {
        "number": "2",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection (SOT-23 CASE 318 Style 8, pin 2 is not connected internally)."
      },
      {
        "number": "3",
        "name": "Cathode",
        "type": "passive",
        "description": "Cathode of the Zener diode, marked by the polarity band, which goes positive relative to the anode in Zener regulation at VZ = 91 V nominal."
      }
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
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        "cost_usd": 0.082,
        "at": "2026-10-22T23:08:41"
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        "pages": 7,
        "sha256": "e9ee257cfd09f81d",
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
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        "described": 3,
        "cites_pages": 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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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "SOT-23",
      "Category": "Diodes",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "e9ee257cfd09f81d8405b38f59a21ee678acdaede0505b108e9a26f5b8a8cefb",
      "rows": [
        {
          "name": "Zener Voltage",
          "symbol": "VZ",
          "kind": "electrical",
          "unit": "V",
          "min": 86.45,
          "typ": 91,
          "max": 95.55,
          "conditions": "@ IZT = 1.4 mA, TA = 25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Zener Test Current",
          "symbol": "IZT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.4,
          "max": null,
          "conditions": "Zener voltage test current",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum Zener Impedance",
          "symbol": "ZZT",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 400,
          "conditions": "@ IZT = 1.4 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum Zener Impedance",
          "symbol": "ZZK",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 2300,
          "conditions": "@ IZK = 0.25 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Reverse Leakage Current",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "@ VR = 69 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Forward Voltage",
          "symbol": "VF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.9,
          "conditions": "IF = 10 mA, all types",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Total Power Dissipation on FR-5 Board",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 225,
          "conditions": "TA = 25°C, Note 1",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Derating above 25°C (FR-5)",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW/°C",
          "min": null,
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        {
          "name": "Total Power Dissipation on Alumina Substrate",
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          "name": "Junction and Storage Temperature Range",
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        {
          "name": "Thermal Resistance, Junction-to-Ambient (FR-5)",
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          "kind": "thermal",
          "unit": "°C/W",
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      ]
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  "discovery_pitch": "MMBZ5270BLT1G (onsemi) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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