RS121PXF

{
  "schema_version": 1,
  "type": "component",
  "slug": "rs121pxf",
  "title": "RS121PXF",
  "brief": "Jiangsu RUNIC Tech Operational Amplifier, SOT23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "op-amp-cmp",
    "rs121pxf"
  ],
  "component": {
    "mpn": "RS121PXF",
    "manufacturer": "Jiangsu RUNIC Tech",
    "package": "SOT23-5",
    "pin_count": 5,
    "category": "Op-amp/Cmp",
    "subcategory": "Operational Amplifier",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2303140930_Jiangsu-RUNIC-Tech-RS121PXF_C5372434.pdf",
    "parts": {
      "symbol": "rs121pxf.kicad_sym",
      "footprint": "rs121pxf.kicad_mod",
      "model_3d": "rs121pxf-etched.glb",
      "model_3d_plain": "rs121pxf.glb",
      "model_3d_step": "rs121pxf-etched.step",
      "model_3d_step_plain": "rs121pxf.step",
      "lbr": "rs121pxf.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "OUT",
        "type": "output",
        "description": "Op-amp output. Rail-to-rail output; short-circuit current limited to ±55 mA. Output swings within ~10-40 mV of each supply rail depending on load (10 kΩ / 2 kΩ)."
      },
      {
        "number": "2",
        "name": "V-",
        "type": "power_in",
        "description": "Negative (lowest) power supply. Connect to ground for single-supply operation or to negative rail for dual-supply. Vs = (V+) − (V−) must be between 2.6 V and 5.5 V (single-supply) or ±1.3 V to ±2.75 V (dual-supply); absolute max Vs = 7 V."
      },
      {
        "number": "3",
        "name": "+IN",
        "type": "input",
        "description": "Positive (noninverting) input. Rail-to-rail input; common-mode range -0.2 V to +5.7 V at Vs = 5.5 V. Input bias current typ. ±1 pA (max ±10 pA). Input clamped to supply rails via diodes; limit external current to ≤10 mA when signals exceed rails by >0.5 V."
      },
      {
        "number": "4",
        "name": "-IN",
        "type": "input",
        "description": "Negative (inverting) input. Rail-to-rail input; common-mode range -0.2 V to +5.7 V at Vs = 5.5 V. Input bias current typ. ±1 pA. Input clamped to supply rails via diodes; limit external current to ≤10 mA when signals exceed rails by >0.5 V."
      },
      {
        "number": "5",
        "name": "V+",
        "type": "power_in",
        "description": "Positive (highest) power supply. Operating range 2.6 V to 5.5 V (single-supply); absolute max Vs = (V+) − (V−) = 7 V. Quiescent current typ. 7.6 µA per amplifier (max 11 µA)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2303140930_Jiangsu-RUNIC-Tech-RS121PXF_C5372434.pdf",
        "pages": 27,
        "sha256": "ad15de92c23081bf",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "rs121pxf.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "rs121pxf-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d244b41c0098707f18f52cb596bca0edeea3121605b6ab5b30c2e24dbc3c050c",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Jiangsu RUNIC Tech",
      "Package": "SOT23-5",
      "Category": "Op-amp/Cmp",
      "Pins": "5"
    }
  },
  "variants": [
    {
      "mpn": "RS121PXF",
      "kind": "packaging"
    },
    {
      "mpn": "RS121PXFXC5",
      "kind": "packaging"
    },
    {
      "mpn": "RS121PXFXK",
      "kind": "packaging"
    },
    {
      "mpn": "RS121PXFXM",
      "kind": "packaging"
    },
    {
      "mpn": "RS121PXFXP",
      "kind": "packaging"
    },
    {
      "mpn": "RS121PXFXQ",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "rs121pxf"
  ],
  "discovery_pitch": "RS121PXF (Jiangsu RUNIC Tech) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "rs121pxf.kicad_sym",
    "rs121pxf.kicad_mod",
    "rs121pxf.glb",
    "rs121pxf.step",
    "rs121pxf.lbr",
    "docs/hero.png",
    "docs/rs121pxf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-25T04:56:11.459Z"
}