BLM18SP221SN1D

{
  "schema_version": 1,
  "type": "component",
  "slug": "blm18sp221sn1d",
  "title": "BLM18SP221SN1D",
  "brief": "Murata Electronics Ferrite Beads, 0603. 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",
    "filters",
    "blm18sp221sn1d",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BLM18SP221SN1D",
    "manufacturer": "Murata Electronics",
    "package": "0603",
    "pin_count": 2,
    "category": "Filters",
    "subcategory": "Ferrite Beads",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8556813856707002368",
    "parts": {
      "symbol": "blm18sp221sn1d.kicad_sym",
      "footprint": "blm18sp221sn1d.kicad_mod",
      "model_3d": "blm18sp221sn1d-hero.glb",
      "model_3d_plain": "blm18sp221sn1d-etched.glb",
      "model_3d_step": "blm18sp221sn1d-etched.step",
      "model_3d_step_plain": "blm18sp221sn1d.step",
      "lbr": "blm18sp221sn1d.lbr"
    },
    "distributor_links": {
      "lcsc": "C3764477",
      "digikey": "490-BLM18SP221SN1DTR-ND",
      "mouser": "81-BLM18SP221SN1D"
    },
    "distributor_check": {
      "checked_at": "2026-11-04T20:49:39Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "490-BLM18SP221SN1DTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "81-BLM18SP221SN1D",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1",
        "type": "passive",
        "description": "One electrode of the two-terminal ferrite bead (220 Ω ±25% at 100 MHz, 0.040 Ω max. initial DC resistance, rated 2800 mA at 85°C and 1900 mA at 125°C); the part has no polarity."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "Other electrode of the two-terminal ferrite bead, interchangeable with the first because the equivalent circuit is marked no polarity."
      }
    ],
    "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: The datasheet draws two end electrodes and an equivalent circuit with two terminals but prints no pi",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 12,
        "cost_usd": 0.5984,
        "at": "2026-11-04T20:49:33"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8556813856707002368",
        "pages": 12,
        "sha256": "c64f16f8687fd711",
        "source_tier": "lcsc"
      },
      "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"
    },
    "models_3d": [
      {
        "file": "blm18sp221sn1d.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          1.6,
          0.8,
          0.8
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "b0136ad7160588d2f5dac8c85da84a35646db656b5bc54bbb873b6b548eedbb3",
        "checked": "2026-11-04",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "blm18sp221sn1d-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          0.8,
          0.8
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "2002846ae605fa8d0316acc6eceae2136f9fdeff14feaf89a07367eb4fb3c695",
        "checked": "2026-11-04",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Murata Electronics",
      "Package": "0603",
      "Category": "Filters",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "catalog",
      "datasheet_sha256": "c64f16f8687fd711e0e89cc7df7505ca7d3bff6bc060a89a58ca14f52b6aeaf2",
      "rows": [
        {
          "name": "Impedance",
          "symbol": "Z",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 220,
          "max": null,
          "conditions": "at 100 MHz, catalog attribute (LCSC C3764477)",
          "source_page": null,
          "source": "catalog"
        },
        {
          "name": "Tolerance",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -25,
          "typ": null,
          "max": 25,
          "conditions": "catalog description (LCSC C3764477)",
          "source_page": null,
          "source": "catalog"
        },
        {
          "name": "Operating temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 125,
          "conditions": "catalog description (LCSC C3764477)",
          "source_page": null,
          "source": "catalog"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "blm18sp221sn1d"
  ],
  "discovery_pitch": "BLM18SP221SN1D (Murata Electronics) 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",
    "blm18sp221sn1d.kicad_sym",
    "blm18sp221sn1d.kicad_mod",
    "blm18sp221sn1d.glb",
    "blm18sp221sn1d.step",
    "blm18sp221sn1d.lbr",
    "docs/hero.png",
    "docs/blm18sp221sn1d-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "blm18sp221sn1d-hero.glb",
    "blm18sp221sn1d-hero.overlay.json",
    "blm18sp221sn1d-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}