main
Ray Set visibility: public 97e1bb3 8d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "smd1812-350c-16v",
  "title": "SMD1812-350C-16V",
  "brief": "BNstar Resettable Fuses, 1812. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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  "tags": [
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    "category": "Circuit Protection",
    "subcategory": "Resettable Fuses",
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    "parts": {
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      "footprint": "smd1812-350c-16v.kicad_mod",
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      "model_3d_plain": "smd1812-350c-16v-etched.glb",
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      "lbr": "smd1812-350c-16v.lbr"
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    "distributor_links": {
      "lcsc": "C22472496"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T01:10:54Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1",
        "type": "passive",
        "description": "One of two non-polarized terminals of the resettable PTC; rated 3.5 A hold, 7.0 A trip at 25℃, Vmax 16.0 V, Imax 100 A."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
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      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "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 package drawing on page 1 shows a two-terminal chip device with no pin numbers or names printed.",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 3,
        "cost_usd": 0.0893,
        "at": "2026-10-19T01:06:52"
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        "pages": 3,
        "sha256": "90d104b3e39b0ae2",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
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        "described": 2,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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    "viewers": {
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        "role": "plain",
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        "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": "f6f91cccfa88ed5e46a94f2372d9550501ade4ca8e103c5002586390e1fd82bb",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
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  "metadata": {
    "specs": {
      "Manufacturer": "BNstar",
      "Package": "1812",
      "Category": "Circuit Protection",
      "Pins": "2"
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    "characteristics": {
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      "rows": [
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          "unit": "Ω",
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          "typ": null,
          "max": null,
          "conditions": "initial (un-soldered) state",
          "source_page": 1,
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        },
        {
          "name": "Trip current",
          "symbol": "IT",
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          "unit": "A",
          "min": 7,
          "typ": null,
          "max": null,
          "conditions": "25℃ still air",
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        },
        {
          "name": "Time to trip",
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          "kind": "timing",
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          "conditions": "at 10.0 A",
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        },
        {
          "name": "Maximum continuous voltage (rated voltage)",
          "symbol": "Vmax",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 16,
          "conditions": "at rated current",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Maximum fault current",
          "symbol": "Imax",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
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          "max": 100,
          "conditions": "at rated voltage",
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        {
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          "symbol": "R1max",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 0.035,
          "conditions": "25℃, measured one hour after reflow soldering of 260℃ for 20 sec",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Recommended storage temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": null,
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          "max": 40,
          "conditions": "70% R.H. max",
          "source_page": 2,
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        },
        {
          "name": "Reflow soldering temperature",
          "symbol": "",
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          "conditions": "reflow soldering for 20 sec",
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          "source": "datasheet"
        },
        {
          "name": "Maximum ambient operating temperature range",
          "symbol": "",
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          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
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        },
        {
          "name": "Typical power dissipation",
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          "unit": "W",
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          "max": null,
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          "source_page": 2,
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        {
          "name": "Hold current at ambient temperature",
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          "conditions": "ambient -20℃",
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          "conditions": "ambient 25℃",
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          "name": "Hold current at ambient temperature",
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          "conditions": "ambient 50℃",
          "source_page": 2,
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          "name": "Hold current at ambient temperature",
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          "kind": "thermal",
          "unit": "A",
          "min": null,
          "typ": 2.35,
          "max": null,
          "conditions": "ambient 60℃",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Hold current at ambient temperature",
          "symbol": "IH",
          "kind": "thermal",
          "unit": "A",
          "min": null,
          "typ": 1.88,
          "max": null,
          "conditions": "ambient 70℃",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Hold current at ambient temperature",
          "symbol": "IH",
          "kind": "thermal",
          "unit": "A",
          "min": null,
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          "conditions": "ambient 85℃",
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          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
    "smd1812-350c-16v"
  ],
  "discovery_pitch": "SMD1812-350C-16V (BNstar) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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}