main
Ray Set visibility: public a9c4187 9h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "smaj43ca-tr",
  "title": "SMAJ43CA-TR",
  "brief": "STMicroelectronics TVS, SMA(DO-214AC). 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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    "circuit protection",
    "smaj43ca-tr",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "SMAJ43CA-TR",
    "manufacturer": "STMicroelectronics",
    "package": "SMA(DO-214AC)",
    "pin_count": 2,
    "category": "Circuit Protection",
    "subcategory": "TVS",
    "datasheet": "https://www.st.com/resource/en/datasheet/smaj43ca-tr.pdf",
    "parts": {
      "symbol": "smaj43ca-tr.kicad_sym",
      "footprint": "smaj43ca-tr.kicad_mod",
      "model_3d": "smaj43ca-tr-hero.glb",
      "model_3d_plain": "smaj43ca-tr-etched.glb",
      "model_3d_step": "smaj43ca-tr-etched.step",
      "model_3d_step_plain": "smaj43ca-tr.step",
      "lbr": "smaj43ca-tr.lbr"
    },
    "distributor_links": {
      "lcsc": "C132938"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T22:10:00Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "A1",
        "type": "passive",
        "description": "Bidirectional TVS terminal 1 (no polarity for CA types); SMAJ43CA has VRM 43 V, VBR 47.8 V min to 50.3 V max at 1 mA, and VCL max 69.4 V at 5.7 A (10/1000 µs)."
      },
      {
        "number": "2",
        "name": "A2",
        "type": "passive",
        "description": "Bidirectional TVS terminal 2 (no polarity for CA types); the device clamps in both directions with 400 W peak pulse power (10/1000 µs) and no cathode band."
      }
    ],
    "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",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet gives no pin numbers or pin names. It shows only a 2-terminal SMA (DO-214AC) outline w"
        ],
        "pages_sent": 10,
        "cost_usd": 0.0841,
        "at": "2026-10-22T22:09:50"
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      "datasheet": {
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        "pages": 10,
        "sha256": "4bb181453198810d",
        "source_tier": "mfr"
      },
      "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"
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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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          2.7,
          2.22
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "1cfddd4e3b1bf22b8fc6ee3258c2aade882ed7b85b528e23b9db42437775a1db",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "smaj43ca-tr-etched.step",
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "2c500ff06e6172d3b0c0791d30f010ae4da1c17dc69405ec654e4969e7173ba7",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "SMA(DO-214AC)",
      "Category": "Circuit Protection",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "4bb181453198810dd9cfca885a1f19dfae4be57c8821fa0712fde4a0825a984f",
      "rows": [
        {
          "name": "Peak pulse power dissipation",
          "symbol": "PPP",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 400,
          "conditions": "Tj initial = Tamb, 10/1000 µs",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature range",
          "symbol": "Tj",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum lead temperature for soldering",
          "symbol": "TL",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "during 10 s",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to leads",
          "symbol": "Rth(j-l)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 30,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to ambient",
          "symbol": "Rth(j-a)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 120,
          "max": null,
          "conditions": "on printed circuit on recommended pad layout",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Leakage current at VRM",
          "symbol": "IRM",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "25 °C, at VRM",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Leakage current at VRM",
          "symbol": "IRM",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "85 °C, at VRM",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Stand-off voltage",
          "symbol": "VRM",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 43,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Breakdown voltage",
          "symbol": "VBR",
          "kind": "electrical",
          "unit": "V",
          "min": 47.8,
          "typ": null,
          "max": 50.3,
          "conditions": "@ IR = 1 mA, pulse test tp < 50 ms",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Clamping voltage 10/1000 µs",
          "symbol": "VCL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 69.4,
          "conditions": "@ IPP = 5.7 A, 10/1000 µs",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Dynamic resistance 10/1000 µs",
          "symbol": "RD",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 2.91,
          "conditions": "10/1000 µs",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Clamping voltage 8/20 µs",
          "symbol": "VCL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 91,
          "conditions": "@ IPP = 25 A, 8/20 µs",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Dynamic resistance 8/20 µs",
          "symbol": "RD",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 1.53,
          "conditions": "8/20 µs",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Voltage temperature coefficient",
          "symbol": "αT",
          "kind": "temperature_coefficient",
          "unit": "10-4/°C",
          "min": null,
          "typ": null,
          "max": 10.2,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
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  "sections": [
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  "discovery_triggers": [
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  ],
  "discovery_pitch": "SMAJ43CA-TR (STMicroelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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  "visibility": {
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}