LM321H-TR

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm321h-tr",
  "title": "LM321H-TR",
  "brief": "Gainsil 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",
    "lm321h-tr"
  ],
  "component": {
    "mpn": "LM321H-TR",
    "manufacturer": "Gainsil",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "Op-amp/Cmp",
    "subcategory": "Operational Amplifier",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2201121330_Gainsil-LM321H-TR_C2927688.pdf",
    "parts": {
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      "model_3d_step_plain": "lm321h-tr.step",
      "lbr": "lm321h-tr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2927688"
    },
    "pins": [
      {
        "number": "1",
        "name": "IN+",
        "type": "input",
        "description": "Non-inverting analog input of the op-amp. Common-mode input range includes ground and extends to VDD-1.5V. Typical input bias current 20nA."
      },
      {
        "number": "2",
        "name": "VSS",
        "type": "power_in",
        "description": "Negative supply / ground. Connect to GND in single-supply operation (3V to 36V VDD) or to the negative rail (down to -18V) in dual-supply operation. Bypass with a 0.1µF ceramic capacitor to ground in split-supply designs."
      },
      {
        "number": "3",
        "name": "IN-",
        "type": "input",
        "description": "Inverting analog input of the op-amp. Same common-mode range and bias current characteristics as IN+."
      },
      {
        "number": "4",
        "name": "OUT",
        "type": "output",
        "description": "Op-amp output. Swings from 0V to VCC-1.5V; sources/sinks 40mA typical (60mA max) into a 10Ω load to VS/2. Output high VOH ≥12V and low VOL ≤5mV typical at RL=10kΩ with VS=15V."
      },
      {
        "number": "5",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply. Single-supply range 3V to 36V, or up to +18V in dual-supply operation. Bypass with a 0.1µF ceramic capacitor to VSS placed close to the pin."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2201121330_Gainsil-LM321H-TR_C2927688.pdf",
        "pages": 14,
        "sha256": "1b038a6ed7d0cd56",
        "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": "lm321h-tr.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": "lm321h-tr-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": "2a569275fb443e046c5b45a138aee6b53fbbe3bd4e2381e9490f3e6d801db227",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Unknown",
      "Package": "SOT-23-5",
      "Category": "Op-amp/Cmp",
      "Pins": "5"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "1b038a6ed7d0cd56",
      "rows": [
        {
          "name": "Common-Mode Rejection Ratio",
          "symbol": "CMRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 60,
          "typ": 70,
          "max": null,
          "conditions": "VCM = 0V to Vs-1.5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Open-Loop Voltage Gain",
          "symbol": "AOL",
          "kind": "electrical",
          "unit": "dB",
          "min": 85,
          "typ": 100,
          "max": null,
          "conditions": "RL = 5kΩ, VO = 1V to 11V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Voltage",
          "symbol": "VOS",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 0.4,
          "max": 5,
          "conditions": "VCM = VS/2",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Swing from Rail (VOH)",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 11,
          "typ": null,
          "max": null,
          "conditions": "RL = 2kΩ",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Swing from Rail (VOL)",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 5,
          "max": 20,
          "conditions": "RL = 2kΩ",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Swing from Rail (VOH)",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 13,
          "typ": 12,
          "max": null,
          "conditions": "RL = 10kΩ",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Current (source)",
          "symbol": "ISOURCE",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 40,
          "max": 60,
          "conditions": "RL = 10Ω to VS/2",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Current (sink)",
          "symbol": "ISINK",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 40,
          "max": 60,
          "conditions": "RL = 10Ω to VS/2",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating Voltage Range (minimum)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating Voltage Range (maximum)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 36,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Rejection Ratio",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 70,
          "typ": 100,
          "max": null,
          "conditions": "VS = +5V to +36V, VCM = +0.5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current / Amplifier",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.25,
          "max": 2,
          "conditions": "VS = 36V, RL=∞",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Voltage",
          "symbol": "Vcc",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "Printed as ±20V or 40V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Differential input voltage",
          "symbol": "VI(DIFF)",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage",
          "symbol": "VI",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature Range",
          "symbol": "Topr",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Bias Current",
          "symbol": "IB",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Current",
          "symbol": "IOS",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Voltage Drift",
          "symbol": "ΔVOS/ΔT",
          "kind": "electrical",
          "unit": "μV/℃",
          "min": null,
          "typ": 7,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Gain-Bandwidth Product",
          "symbol": "GBP",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Slew Rate",
          "symbol": "SR",
          "kind": "electrical",
          "unit": "V/μs",
          "min": null,
          "typ": 0.2,
          "max": null,
          "conditions": "G = +1, 2V Output Step",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  "discovery_pitch": "LM321H-TR (Unknown) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
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  "variants": [
    {
      "mpn": "LM321H-TR",
      "kind": "packaging"
    },
    {
      "mpn": "LM321H-TRLM358H-SR",
      "kind": "packaging"
    },
    {
      "mpn": "LM321H-TRLM358H-MR",
      "kind": "packaging"
    },
    {
      "mpn": "LM324H-SR",
      "kind": "unknown"
    },
    {
      "mpn": "LM324H-TR",
      "kind": "unknown"
    }
  ],
  "updated_at": "2026-09-28T16:36:06.721Z"
}