OPA131UA

{
  "slug": "opa131ua",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Operational Amplifier, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "operational amplifier-comparator",
    "opa131ua",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "opa131ua.kicad_sym",
    "opa131ua.kicad_mod",
    "opa131ua.glb",
    "opa131ua.step",
    "opa131ua.lbr",
    "docs/hero.png",
    "docs/opa131ua-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "opa131ua-hero.glb",
    "opa131ua-hero.overlay.json",
    "opa131ua-etched.glb"
  ],
  "component": {
    "mpn": "OPA131UA",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Operational Amplifier/Comparator",
    "subcategory": "Operational Amplifier",
    "datasheet": "https://www.ti.com/lit/ds/symlink/opa131ua.pdf",
    "parts": {
      "symbol": "opa131ua.kicad_sym",
      "footprint": "opa131ua.kicad_mod",
      "model_3d": "opa131ua-hero.glb",
      "model_3d_plain": "opa131ua-etched.glb",
      "model_3d_step": "opa131ua-etched.step",
      "model_3d_step_plain": "opa131ua.step",
      "lbr": "opa131ua.lbr"
    },
    "distributor_links": {
      "lcsc": "C2059619",
      "digikey": "OPA131UA-ND",
      "mouser": "595-OPA131UA"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T01:12:59Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "OPA131UA-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-OPA131UA",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Offset Trim",
        "type": "passive",
        "description": "Offset voltage trim connection, used with a 100kΩ potentiometer to V+ (wiper) for a ±20mV typ trim range to null the op amp's own offset."
      },
      {
        "number": "2",
        "name": "–In",
        "type": "input",
        "description": "Inverting input of the FET-input op amp, with input bias current of 50pA max and input voltage limited to (V-) - 0.7V to (V+) + 0.7V."
      },
      {
        "number": "3",
        "name": "+In",
        "type": "input",
        "description": "Non-inverting input of the FET-input op amp, with common-mode range of (V-) + 3V to (V+) - 1V typ and input voltage limited to (V-) - 0.7V to (V+) + 0.7V."
      },
      {
        "number": "4",
        "name": "V–",
        "type": "power_in",
        "description": "Negative supply, with total supply (V+ to V-) of ±4.5V to ±18V operating and 36V absolute maximum, bypassed with 10nF ceramic or larger."
      },
      {
        "number": "5",
        "name": "Offset Trim",
        "type": "passive",
        "description": "Offset voltage trim connection, used with a 100kΩ potentiometer to V+ (wiper) for a ±20mV typ trim range to null the op amp's own offset."
      },
      {
        "number": "6",
        "name": "Output",
        "type": "output",
        "description": "Op amp output with short-circuit current of ±25mA and swing to within 2.5V typ of either supply at RL = 2kΩ; short-circuit to ground is continuous."
      },
      {
        "number": "7",
        "name": "V+",
        "type": "power_in",
        "description": "Positive supply, with total supply (V+ to V-) of ±4.5V to ±18V operating and 36V absolute maximum, bypassed with 10nF ceramic or larger."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin numbers were mapped from the SO-8 pinout figure, whose text extraction lists the labels without ; The datasheet does not say which trim pin the potentiometer wiper connects to. Figure 1 text shows o"
        ],
        "pages_sent": 23,
        "cost_usd": 0.1364,
        "at": "2026-10-27T01:12:24"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/opa131ua.pdf",
        "pages": 23,
        "sha256": "acdc9774057d2a2e",
        "source_tier": "mfr"
      },
      "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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        "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": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "opa131ua-etched.step",
        "role": "eda",
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
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        "sha256": "ecd385bd46f1b13d6d01d02f26dea0c8837b19cbe5ebbd18a117f3e27858ef4f",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  }
}