LM321

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm321",
  "title": "LM321",
  "brief": "Slkor SLKORMICRO Elec Operational Amplifier, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "op-amp-cmp",
    "lm321"
  ],
  "component": {
    "mpn": "LM321",
    "manufacturer": "Slkor SLKORMICRO Elec",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "Op-amp/Cmp",
    "subcategory": "Operational Amplifier",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/ad66d3864336d8f6c4c3d11e9f6827d8.pdf",
    "parts": {
      "symbol": "lm321.kicad_sym",
      "footprint": "lm321.kicad_mod",
      "model_3d": "lm321-etched.glb",
      "model_3d_plain": "lm321.glb",
      "model_3d_step": "lm321-etched.step",
      "model_3d_step_plain": "lm321.step",
      "lbr": "lm321.lbr"
    },
    "distributor_links": {
      "lcsc": "C880719"
    },
    "pins": [
      {
        "number": "1",
        "name": "+IN",
        "type": "input",
        "description": "Non-inverting op-amp input. Input bias current typ. ±45 nA (max ±250 nA); common-mode input voltage range includes ground up to V+ − 1.5 V."
      },
      {
        "number": "2",
        "name": "V-",
        "type": "power_in",
        "description": "Negative supply / ground pin. Tie to GND for single-supply operation, or to the negative rail for split-supply operation (±12 V max, 24 V total across V+ to V-)."
      },
      {
        "number": "3",
        "name": "-IN",
        "type": "input",
        "description": "Inverting op-amp input. Input offset voltage typ. ±2 mV (max ±5 mV); differential input voltage rating 24 V."
      },
      {
        "number": "4",
        "name": "OUT",
        "type": "output",
        "description": "Op-amp output. Source current typ. 40 mA, sink current typ. 15 mA; short-circuit current to ground typ. 40 mA. Stable driving large capacitive loads."
      },
      {
        "number": "5",
        "name": "V+",
        "type": "power_in",
        "description": "Positive supply pin. Absolute maximum supply voltage 24 V (single) or ±12 V (split). Supply current typ. 0.5 mA at V+ = 5 V, 0.7 mA at V+ = 24 V."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/ad66d3864336d8f6c4c3d11e9f6827d8.pdf",
        "pages": 5,
        "sha256": "6163ed0d8bef93ca",
        "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -1.1375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23-5@sha256:455a3f7c3e5eb5b8",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "lm321.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,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm321-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,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c0fd0cb4d2120fabb1e53bfd74f14b0763e35f5eb0b780720de521123944df10",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Slkor SLKORMICRO Elec",
      "Package": "SOT-23-5",
      "Category": "Op-amp/Cmp",
      "Pins": "5"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lm321"
  ],
  "discovery_pitch": "LM321 (Slkor SLKORMICRO Elec) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm321.kicad_sym",
    "lm321.kicad_mod",
    "lm321.glb",
    "lm321.step",
    "lm321-etched.step",
    "lm321.lbr",
    "docs/hero.png",
    "docs/lm321-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-28T16:35:28.055Z"
}