LM4871N

{
  "slug": "lm4871n",
  "version": "0.1.0",
  "type": "component",
  "description": "HGSEMI Audio Amplifiers, DIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "amplifiers-comparators",
    "lm4871n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm4871n.kicad_sym",
    "lm4871n.kicad_mod",
    "lm4871n.glb",
    "lm4871n.step",
    "lm4871n.lbr",
    "docs/hero.png",
    "docs/lm4871n-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm4871n-hero.glb",
    "lm4871n-hero.overlay.json",
    "lm4871n-etched.glb"
  ],
  "component": {
    "mpn": "LM4871N",
    "manufacturer": "HGSEMI",
    "package": "DIP-8",
    "pin_count": 8,
    "category": "Amplifiers/Comparators",
    "subcategory": "Audio Amplifiers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/cb1a9ac98fb0bacca947fe6fb8eed4cb.pdf",
    "parts": {
      "symbol": "lm4871n.kicad_sym",
      "footprint": "lm4871n.kicad_mod",
      "model_3d": "lm4871n-hero.glb",
      "model_3d_plain": "lm4871n-etched.glb",
      "model_3d_step": "lm4871n-etched.step",
      "model_3d_step_plain": "lm4871n.step",
      "lbr": "lm4871n.lbr"
    },
    "distributor_links": {
      "lcsc": "C47089163"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T18:25:15Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Shutdown",
        "type": "input",
        "description": "Shutdown control pin; a high level puts the amplifier into shutdown with no output, and it must be held low for normal operation and must not be left floating."
      },
      {
        "number": "2",
        "name": "Bypass",
        "type": "passive",
        "description": "Internal common-mode voltage pin that requires an external 1μF bypass capacitor, with 0.1μF to 1μF ceramic recommended for this node."
      },
      {
        "number": "3",
        "name": "+IN",
        "type": "input",
        "description": "Non-inverting audio input."
      },
      {
        "number": "4",
        "name": "-IN",
        "type": "input",
        "description": "Inverting audio input."
      },
      {
        "number": "5",
        "name": "VO1",
        "type": "output",
        "description": "Audio output 1, one half of the BTL bridge-tied load output driving the speaker."
      },
      {
        "number": "6",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive power supply, specified at 1.9 V to 5.5 V with the absolute maximum rating of 6.0 V."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Power supply ground."
      },
      {
        "number": "8",
        "name": "VO2",
        "type": "output",
        "description": "Audio output 2, the other half of the BTL bridge-tied load output driving the speaker."
      }
    ],
    "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 pinout is given as a pin-definition table on page 2, and the pin diagram in Figure 1 is an image; The 6.0 V value is the absolute maximum VDD rating from the maximum ratings table on page 3, and 1.9"
        ],
        "pages_sent": 14,
        "cost_usd": 0.0404,
        "at": "2026-10-17T18:23:22"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/cb1a9ac98fb0bacca947fe6fb8eed4cb.pdf",
        "pages": 14,
        "sha256": "a25a10a33327c2dd",
        "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": [
      {
        "file": "lm4871n.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          9.27,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "4a377a56a8d9e9c0b86c095ef9ecc1869ac19e7f5069a3247b294250bf4f235d",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm4871n-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "4b6f66f3d1194d14dc0b34e0f93c648ce149904e9fd864c8f25ea401c0cfdd94",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}