BA4558F-E2

{
  "slug": "ba4558f-e2",
  "version": "0.1.0",
  "type": "component",
  "description": "ROHM Semicon Operational Amplifier, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "amplifiers-comparators",
    "ba4558f-e2",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ba4558f-e2.kicad_sym",
    "ba4558f-e2.kicad_mod",
    "ba4558f-e2.glb",
    "ba4558f-e2.step",
    "ba4558f-e2.lbr",
    "docs/hero.png",
    "docs/ba4558f-e2-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ba4558f-e2-hero.glb",
    "ba4558f-e2-hero.overlay.json",
    "ba4558f-e2-etched.glb"
  ],
  "component": {
    "mpn": "BA4558F-E2",
    "manufacturer": "ROHM Semicon",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Amplifiers/Comparators",
    "subcategory": "Operational Amplifier",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586176414156120064",
    "parts": {
      "symbol": "ba4558f-e2.kicad_sym",
      "footprint": "ba4558f-e2.kicad_mod",
      "model_3d": "ba4558f-e2-hero.glb",
      "model_3d_plain": "ba4558f-e2-etched.glb",
      "model_3d_step": "ba4558f-e2-etched.step",
      "model_3d_step_plain": "ba4558f-e2.step",
      "lbr": "ba4558f-e2.lbr"
    },
    "distributor_links": {
      "lcsc": "C79617",
      "digikey": "BA4558F-E2TR-ND",
      "mouser": "755-BA4558F-E2"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T05:49:26Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "BA4558F-E2TR-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "755-BA4558F-E2",
        "status": "found",
        "lifecycle": "End of Life"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OUT1",
        "type": "output",
        "description": "Output of op-amp channel 1, which swings between the VEE and VCC supply rails."
      },
      {
        "number": "2",
        "name": "-IN1",
        "type": "input",
        "description": "Inverting input of channel 1; the input common-mode voltage range is VEE to VCC, with absolute maximum (VEE-0.3)～VEE+36 V."
      },
      {
        "number": "3",
        "name": "+IN1",
        "type": "input",
        "description": "Non-inverting input of channel 1; the first input stage is a PNP pair, so input bias current flows out of the IC (typ. 60 nA, max. 500 nA for BA4558 family)."
      },
      {
        "number": "4",
        "name": "VEE",
        "type": "power_in",
        "description": "Negative supply rail; BA4558 family operates from ±4 V to ±15 V split supply with absolute maximum VCC-VEE of 36 V."
      },
      {
        "number": "5",
        "name": "+IN2",
        "type": "input",
        "description": "Non-inverting input of channel 2, with the same common-mode range and PNP input stage as channel 1."
      },
      {
        "number": "6",
        "name": "-IN2",
        "type": "input",
        "description": "Inverting input of channel 2, with the same common-mode range limits as channel 1."
      },
      {
        "number": "7",
        "name": "OUT2",
        "type": "output",
        "description": "Output of op-amp channel 2, which swings between the VEE and VCC supply rails."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply rail; BA4558 family operating supply is 8 V to 30 V total (±4 V to ±15 V split) and absolute maximum VCC-VEE is 36 V."
      }
    ],
    "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 PDF text extraction of the SOP8 pin drawing is garbled, so the number-to-name mapping (1 OUT1, 2; Only pages 1 and 2 of 34 were provided. The -E2 suffix in the MPN is a packaging/ordering suffix tha; Pin descriptions mix limits from the absolute maximum and electrical characteristics tables; the BA4"
        ],
        "pages_sent": 2,
        "cost_usd": 0.0359,
        "at": "2026-10-19T05:47:17"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586176414156120064",
        "pages": 34,
        "sha256": "3aef5279c0c85b31",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ba4558f-e2-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f793616cc2ec8d255e79cae51d60b884e6125c3e29c63f0b0a116aeb9fe8bd16",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}