LM336M-2.5

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm336m-2-5",
  "title": "LM336M-2.5",
  "brief": "HGSEMI LM336M 2 5 TR Voltage Reference, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "lm336m-2.5"
  ],
  "component": {
    "mpn": "LM336M-2.5",
    "manufacturer": "HGSEMI LM336M 2 5 TR",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "PMIC",
    "subcategory": "Voltage Reference",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/3ac2e72834c6fa77399e70cd6a3c6c1d.pdf",
    "parts": {
      "symbol": "lm336m-2-5.kicad_sym",
      "footprint": "lm336m-2-5.kicad_mod",
      "model_3d": "lm336m-2-5-etched.glb",
      "model_3d_plain": "lm336m-2-5.glb",
      "model_3d_step": "lm336m-2-5-etched.step",
      "model_3d_step_plain": "lm336m-2-5.step",
      "lbr": "lm336m-2-5.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating or tie to a convenient net; not electrically connected to the die."
      },
      {
        "number": "2",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating."
      },
      {
        "number": "3",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating."
      },
      {
        "number": "4",
        "name": "V-",
        "type": "passive",
        "description": "Negative (cathode) terminal of the 2.5V shunt reference. Return path to ground for the reverse bias current (400µA to 10mA typical). Reference voltage V+ minus V- is nominally 2.49V (2.390-2.540V for LM336-2.5)."
      },
      {
        "number": "5",
        "name": "ADJ",
        "type": "passive",
        "description": "Adjustment pin. A resistor/potentiometer network from V+ to V- with the wiper to ADJ trims the reverse breakdown voltage without altering temperature coefficient (typical: 10kΩ pot). May be left open when the nominal 2.5V is acceptable."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating."
      },
      {
        "number": "8",
        "name": "V+",
        "type": "passive",
        "description": "Positive (anode/cathode-of-reverse-current) terminal of the shunt reference. Biased through a series resistor Rs from the supply so that reverse current sits between 400µA and 10mA. Nominal V+ to V- reverse breakdown = 2.49V."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/3ac2e72834c6fa77399e70cd6a3c6c1d.pdf",
        "pages": 12,
        "sha256": "96331bcf4aebc093",
        "source_tier": "lcsc"
      },
      "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "lm336m-2-5.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm336m-2-5-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "82acbf45fa65218b1b54f444a8bc571e9e0a28bcefa355175a51d79d3393adf6",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "SOIC-8",
      "Category": "PMIC",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lm336m-2.5"
  ],
  "discovery_pitch": "LM336M-2.5 (HGSEMI LM336M 2 5 TR) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm336m-2-5.kicad_sym",
    "lm336m-2-5.kicad_mod",
    "lm336m-2-5.glb",
    "lm336m-2-5.step",
    "lm336m-2-5-etched.step",
    "lm336m-2-5.lbr",
    "docs/hero.png",
    "docs/lm336m-2-5-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "LM336M-2.5/TR",
      "kind": "packaging"
    },
    {
      "mpn": "LM336BM-2.5/TR",
      "kind": "unknown"
    },
    {
      "mpn": "LM336M-2.5LM236M-2.5/TR",
      "kind": "different-part"
    },
    {
      "mpn": "LM336M-2.5LM236AM-2.5/TR",
      "kind": "different-part"
    },
    {
      "mpn": "LM336Z-2.5",
      "kind": "unknown"
    },
    {
      "mpn": "LM336BZ-2.5",
      "kind": "unknown"
    },
    {
      "mpn": "LM336M-2.5LM236Z-2.5",
      "kind": "different-part"
    },
    {
      "mpn": "LM336M-2.5LM236AZ-2.5",
      "kind": "different-part"
    },
    {
      "mpn": "LM336DQ3-2.5/TR",
      "kind": "unknown"
    },
    {
      "mpn": "LM336BDQ3-2.5/TR",
      "kind": "unknown"
    },
    {
      "mpn": "LM336M-2.5LM236DQ3-2.5/TR",
      "kind": "different-part"
    },
    {
      "mpn": "LM336M-2.5LM236ADQ3-2.5/TR",
      "kind": "different-part"
    },
    {
      "mpn": "LM336DQ2-2.5/TR",
      "kind": "unknown"
    },
    {
      "mpn": "LM336BDQ2-2.5/TR",
      "kind": "unknown"
    },
    {
      "mpn": "LM336M-2.5LM236DQ2-2.5/TR",
      "kind": "different-part"
    },
    {
      "mpn": "LM336M-2.5LM236ADQ2-2.5/TR",
      "kind": "different-part"
    }
  ],
  "updated_at": "2026-09-28T16:38:32.796Z"
}