LM334SMX

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm334smx",
  "title": "LM334SMX",
  "brief": "Texas Instruments Current Source / Constant Current Source, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "lm334smx",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LM334SMX",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "Current Source / Constant Current Source",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm334",
    "parts": {
      "symbol": "lm334smx.kicad_sym",
      "footprint": "lm334smx.kicad_mod",
      "model_3d": "lm334smx-hero.glb",
      "model_3d_plain": "lm334smx.glb",
      "model_3d_step": "lm334smx-etched.step",
      "model_3d_step_plain": "lm334smx.step",
      "lbr": "lm334smx.lbr"
    },
    "distributor_links": {
      "lcsc": "C2653831",
      "digikey": "LM334SMX-ND",
      "mouser": "926-LM334SMX"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T03:37:01Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LM334SMX-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "926-LM334SMX",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "V-",
        "type": "power_in",
        "description": "Negative terminal of the floating current source (current-out side); the datasheet rates V+ to V- forward voltage at 40V max."
      },
      {
        "number": "2",
        "name": "R",
        "type": "passive",
        "description": "Set-resistor pin where RSET connects to establish ISET (approx. 67.7 mV/RSET at 25°C); voltage from R to V- is limited to 5V max."
      },
      {
        "number": "3",
        "name": "V+",
        "type": "power_in",
        "description": "Positive terminal of the floating current source; set current ISET flows into this pin, with 40V max forward and 20V max reverse voltage to V-."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "5",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal 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+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: LM334SMX uses the SOIC-8 alternative pinout (Figure 2), which differs from the LM334M/MX pinout in F; Pin positions come from reading the small labels in the Figure 2 image. I read pins 1 to 4 as V-, R,",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 31,
        "cost_usd": 0.4869,
        "at": "2026-10-08T03:36:46"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm334",
        "pages": 31,
        "sha256": "69c23db7227e75e6",
        "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"
    },
    "models_3d": [
      {
        "file": "lm334smx.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": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm334smx-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": "ac2422cbc1c3975745b4eeb3a744bd2d47e0dcecb2f6d525cc2a0c996483d5f9",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lm334smx"
  ],
  "discovery_pitch": "LM334SMX (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm334smx.kicad_sym",
    "lm334smx.kicad_mod",
    "lm334smx.glb",
    "lm334smx.step",
    "lm334smx.lbr",
    "docs/hero.png",
    "docs/lm334smx-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm334smx-hero.glb",
    "lm334smx-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}