main
Ray Set visibility: public 50a6a70 10d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "hg4871m",
  "title": "HG4871M",
  "brief": "HGSEMI Audio Amplifiers, SOP-8. 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",
    "amplifiers-comparators",
    "hg4871m",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "HG4871M",
    "manufacturer": "HGSEMI",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Amplifiers/Comparators",
    "subcategory": "Audio Amplifiers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8608738634837073920",
    "parts": {
      "symbol": "hg4871m.kicad_sym",
      "footprint": "hg4871m.kicad_mod",
      "model_3d": "hg4871m-hero.glb",
      "model_3d_plain": "hg4871m-etched.glb",
      "model_3d_step": "hg4871m-etched.step",
      "model_3d_step_plain": "hg4871m.step",
      "lbr": "hg4871m.lbr"
    },
    "distributor_links": {
      "lcsc": "C910868"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T03:59:29Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Shutdown",
        "type": "input",
        "description": "Shutdown control: a high level shuts the power amplifier down, a low level keeps it in normal operation, and the pin must not be left floating because the device may enter an undefined state with no power reduction."
      },
      {
        "number": "2",
        "name": "Bypass",
        "type": "passive",
        "description": "Internal common-mode voltage node that requires an external 1μF bypass capacitor; the datasheet recommends 0.1μF to 1μF ceramic for this pin, which affects PSRR and switching noise."
      },
      {
        "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 side of the bridge-tied-load (BTL) differential output driving the load."
      },
      {
        "number": "6",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive power supply, operating range 2.5 V to 5.5 V (absolute maximum 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 opposite side of the bridge-tied-load (BTL) differential output driving the load."
      }
    ],
    "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: Datasheet gives the Bypass pin function and capacitor value but no electrical type; classified as pa; Pin table and descriptions are in Chinese in the source; English descriptions are translations from "
        ],
        "pages_sent": 11,
        "cost_usd": 0.042,
        "at": "2026-10-18T03:57:22"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8608738634837073920",
        "pages": 11,
        "sha256": "007b4fb9c06985b8",
        "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"
    },
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        "role": "plain",
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        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "SOP-8",
      "Category": "Amplifiers/Comparators",
      "Pins": "8"
    },
    "characteristics": {
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      "source": "datasheet",
      "datasheet_sha256": "007b4fb9c06985b86bb00d318bc3d6e8af888a92d1ab4881c95807dedfdbb0c6",
      "rows": [
        {
          "name": "Supply voltage (VDD)",
          "symbol": "VDD",
          "kind": "electrical",
          "unit": "V",
          "min": 2.5,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Input voltage",
          "symbol": "",
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          "typ": null,
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          "conditions": "",
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        },
        {
          "name": "Operating voltage",
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          "unit": "V",
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          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Junction temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 160,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Lead temperature (soldering 10s)",
          "symbol": "TLEAD",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "Soldering 10s",
          "source_page": 3,
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        },
        {
          "name": "Maximum junction temperature",
          "symbol": "TJMAX",
          "kind": "thermal",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction-to-ambient (SOP)",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 140,
          "max": null,
          "conditions": "SOP package",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output offset voltage",
          "symbol": "Vos",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "VDD=5V, IO=0",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Shutdown current",
          "symbol": "ISD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.1,
          "max": null,
          "conditions": "VDD=2.5 – 5.5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output power",
          "symbol": "PO",
          "kind": "electrical",
          "unit": "W",
          "min": null,
          "typ": 2.9,
          "max": null,
          "conditions": "f=1kHz, RL=4Ω, THD=10%, VDD=5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output power",
          "symbol": "PO",
          "kind": "electrical",
          "unit": "W",
          "min": null,
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          "conditions": "f=1kHz, RL=4Ω, THD=10%, VDD=4.2V",
          "source_page": 4,
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        {
          "name": "Output power",
          "symbol": "PO",
          "kind": "electrical",
          "unit": "W",
          "min": null,
          "typ": 1.6,
          "max": null,
          "conditions": "f=1kHz, RL=4Ω, THD=10%, VDD=3.7V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output power",
          "symbol": "PO",
          "kind": "electrical",
          "unit": "W",
          "min": null,
          "typ": 2.3,
          "max": null,
          "conditions": "f=1kHz, RL=4Ω, THD=1%, VDD=5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output power",
          "symbol": "PO",
          "kind": "electrical",
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          "min": null,
          "typ": 1.3,
          "max": null,
          "conditions": "f=1kHz, RL=4Ω, THD=1%, VDD=3.7V",
          "source_page": 4,
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        },
        {
          "name": "Output power",
          "symbol": "PO",
          "kind": "electrical",
          "unit": "W",
          "min": null,
          "typ": 1.72,
          "max": null,
          "conditions": "f=1kHz, RL=8Ω, THD=10%, VDD=5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output power",
          "symbol": "PO",
          "kind": "electrical",
          "unit": "W",
          "min": null,
          "typ": 1.2,
          "max": null,
          "conditions": "f=1kHz, RL=8Ω, THD=10%, VDD=4.2V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output power",
          "symbol": "PO",
          "kind": "electrical",
          "unit": "W",
          "min": null,
          "typ": 0.93,
          "max": null,
          "conditions": "f=1kHz, RL=8Ω, THD=10%, VDD=3.7V",
          "source_page": 4,
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        },
        {
          "name": "Output power",
          "symbol": "PO",
          "kind": "electrical",
          "unit": "W",
          "min": null,
          "typ": 1.39,
          "max": null,
          "conditions": "f=1kHz, RL=8Ω, THD=1%, VDD=5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output power",
          "symbol": "PO",
          "kind": "electrical",
          "unit": "W",
          "min": null,
          "typ": 0.97,
          "max": null,
          "conditions": "f=1kHz, RL=8Ω, THD=1%, VDD=4.2V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output power",
          "symbol": "PO",
          "kind": "electrical",
          "unit": "W",
          "min": null,
          "typ": 0.75,
          "max": null,
          "conditions": "f=1kHz, RL=8Ω, THD=1%, VDD=3.7V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Total harmonic distortion plus noise",
          "symbol": "THD+N",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.23,
          "max": null,
          "conditions": "VDD=5V, RL=4Ω, PO=1.8W",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Total harmonic distortion plus noise",
          "symbol": "THD+N",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.08,
          "max": null,
          "conditions": "VDD=5V, RL=8Ω, PO=1W",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power supply rejection ratio",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 80,
          "max": null,
          "conditions": "Input ac-grounded with Cin=0.47μF, VDD=5V, f=217Hz",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power supply rejection ratio",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 70,
          "max": null,
          "conditions": "Input ac-grounded with Cin=0.47μF, VDD=5V, f=20kHz",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output noise voltage",
          "symbol": "Vn",
          "kind": "electrical",
          "unit": "μV",
          "min": null,
          "typ": 35,
          "max": null,
          "conditions": "Input ac-grounded with Cin=0.47μF, VDD=5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Signal-to-noise ratio",
          "symbol": "SNR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 98,
          "max": null,
          "conditions": "VDD=5V, f=1kHz, THD=1%",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Shutdown pin high-level input voltage",
          "symbol": "VSD_H",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.8,
          "max": null,
          "conditions": "VDD=5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Shutdown pin low-level input voltage",
          "symbol": "VSD_L",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.5,
          "max": null,
          "conditions": "VDD=5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Wake-up time",
          "symbol": "TWU",
          "kind": "electrical",
          "unit": "ms",
          "min": null,
          "typ": 200,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_pitch": "HG4871M (HGSEMI) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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