A1221LLHLX-T

{
  "slug": "a1221llhlx-t",
  "version": "0.1.0",
  "type": "component",
  "description": "Allegro MicroSystems, LLC Magnetic Sensors, SOT-23W. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "sensors",
    "a1221llhlx-t",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "a1221llhlx-t.kicad_sym",
    "a1221llhlx-t.kicad_mod",
    "a1221llhlx-t.glb",
    "a1221llhlx-t.step",
    "a1221llhlx-t.lbr",
    "docs/hero.png",
    "docs/a1221llhlx-t-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "a1221llhlx-t-hero.glb",
    "a1221llhlx-t-hero.overlay.json",
    "a1221llhlx-t-etched.glb"
  ],
  "component": {
    "mpn": "A1221LLHLX-T",
    "manufacturer": "Allegro MicroSystems, LLC",
    "package": "SOT-23W",
    "pin_count": 3,
    "category": "Sensors",
    "subcategory": "Magnetic Sensors",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/963f96860b52059ee0efc4f3fa5d2af3.pdf",
    "parts": {
      "symbol": "a1221llhlx-t.kicad_sym",
      "footprint": "a1221llhlx-t.kicad_mod",
      "model_3d": "a1221llhlx-t-hero.glb",
      "model_3d_plain": "a1221llhlx-t-etched.glb",
      "model_3d_step": "a1221llhlx-t-etched.step",
      "model_3d_step_plain": "a1221llhlx-t.step",
      "lbr": "a1221llhlx-t.lbr"
    },
    "distributor_links": {
      "lcsc": "C2152798",
      "digikey": "620-A1221LLHLX-TTR-ND",
      "mouser": "250-A1221LLHLX-T"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T16:34:39Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "620-A1221LLHLX-TTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "250-A1221LLHLX-T",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VCC",
        "type": "power_in",
        "description": "Connects the power supply to the chip; forward supply voltage is 3 to 24 V for operation with TJ < 165°C, with an absolute maximum forward supply voltage of 26.5 V."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "output",
        "description": "Output from the circuit, an open-drain output that is short-circuit protected, sinks up to 25 mA continuous, and has an output off voltage rating of 26 V."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection for the device."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "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: The datasheet describes VOUT as an open-drain output with a 25 mA continuous rating and a 26 V outpu; Page 1 carries a 'NOT FOR NEW DESIGN' marking. The datasheet's footnote and page 15 state that only "
        ],
        "pages_sent": 16,
        "cost_usd": 0.0625,
        "at": "2026-10-30T16:34:30"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/963f96860b52059ee0efc4f3fa5d2af3.pdf",
        "pages": 16,
        "sha256": "4adf48ef86300431",
        "source_tier": "lcsc"
      },
      "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"
    },
    "models_3d": [
      {
        "file": "a1221llhlx-t.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3.0,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "a1221llhlx-t-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3.0,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "28a2d61a16b2635aacfbddf0cd2691d6337500adad39d59c49c0bba5e0499dd7",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}