LM386BN-1

{
  "slug": "lm386bn-1",
  "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": [
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    "amplifiers-comparators",
    "lm386bn-1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "lm386bn-1.kicad_sym",
    "lm386bn-1.kicad_mod",
    "lm386bn-1.glb",
    "lm386bn-1.step",
    "lm386bn-1.lbr",
    "docs/hero.png",
    "docs/lm386bn-1-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm386bn-1-hero.glb",
    "lm386bn-1-hero.overlay.json",
    "lm386bn-1-etched.glb"
  ],
  "component": {
    "mpn": "LM386BN-1",
    "manufacturer": "HGSEMI",
    "package": "DIP-8",
    "pin_count": 8,
    "category": "Amplifiers/Comparators",
    "subcategory": "Audio Amplifiers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8758141737317339136",
    "parts": {
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      "footprint": "lm386bn-1.kicad_mod",
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      "model_3d_plain": "lm386bn-1-etched.glb",
      "model_3d_step": "lm386bn-1-etched.step",
      "model_3d_step_plain": "lm386bn-1.step",
      "lbr": "lm386bn-1.lbr"
    },
    "distributor_links": {
      "lcsc": "C7432385"
    },
    "distributor_check": {
      "checked_at": "2026-10-14T22:27:22Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GAIN",
        "type": "passive",
        "description": "Gain-set pin: left open, the internal 1.35 kΩ resistor sets the voltage gain to 20 (26 dB); a capacitor between pins 1 and 8 bypasses that resistor to raise the gain to 200 (46 dB), and an RC series network between pins 1 and 8 sets any gain from 20 to 200."
      },
      {
        "number": "2",
        "name": "IN-",
        "type": "input",
        "description": "Inverting input referenced to ground through an internal 50 kΩ resistor, with an input bias current of about 250 nA (typ, Vcc=6 V) and a maximum input voltage of ±0.4 V."
      },
      {
        "number": "3",
        "name": "IN+",
        "type": "input",
        "description": "Non-inverting input referenced to ground through an internal 50 kΩ resistor, with an input bias current of about 250 nA (typ, Vcc=6 V) and a maximum input voltage of ±0.4 V."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the inputs, output and supply."
      },
      {
        "number": "5",
        "name": "VOUT",
        "type": "output",
        "description": "Amplifier output, automatically biased to half the supply voltage; output power is 325 mW typ at Vcc=6 V into 8 Ω at 10% THD (500 mW min at Vcc=9 V)."
      },
      {
        "number": "6",
        "name": "Vs",
        "type": "power_in",
        "description": "Supply pin; operating supply range is 4 V to 12 V, with an absolute maximum of 15 V."
      },
      {
        "number": "7",
        "name": "BYPASS",
        "type": "passive",
        "description": "Bypass pin; the datasheet's PSRR test uses a 10 µF bypass capacitor (CBYPASS) and gives no further functional limit for this pin."
      },
      {
        "number": "8",
        "name": "GAIN",
        "type": "passive",
        "description": "Gain-set pin paired with pin 1: capacitor or RC network between pins 1 and 8 changes the gain from the internal default of 20 up to 200."
      }
    ],
    "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 gives the pin table for DIP-8/SOP-8/MSOP-8 together and does not say which variant the; Pin 7 BYPASS has no stated function or limit beyond its name and the PSRR test condition (CBYPASS=10; Pin 1 and pin 8 (both labelled GAIN) have their behaviour described in the application notes rather "
        ],
        "pages_sent": 10,
        "cost_usd": 0.0305,
        "at": "2026-10-14T22:27:04"
      },
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        "pages": 10,
        "sha256": "3500d8afa6a2f178",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "sha256": "4a377a56a8d9e9c0b86c095ef9ecc1869ac19e7f5069a3247b294250bf4f235d",
        "checked": "2026-10-14",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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}