KIA431AF-RTF

{
  "schema_version": 1,
  "type": "component",
  "slug": "kia431af-rtf",
  "title": "KIA431AF-RTF",
  "brief": "KEC Semicon Voltage Reference, SOT-89-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "kia431af-rtf"
  ],
  "component": {
    "mpn": "KIA431AF-RTF",
    "manufacturer": "KEC Semicon",
    "package": "SOT-89-3",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Reference",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/1912111437_KEC-Semicon-KIA431AF-RTF-PC_C465009.pdf",
    "parts": {
      "symbol": "kia431af-rtf.kicad_sym",
      "footprint": "kia431af-rtf.kicad_mod",
      "model_3d": "kia431af-rtf-etched.glb",
      "model_3d_plain": "kia431af-rtf.glb",
      "model_3d_step": "kia431af-rtf-etched.step",
      "model_3d_step_plain": "kia431af-rtf.step",
      "lbr": "kia431af-rtf.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "REF",
        "type": "input",
        "description": "Reference input. High-impedance input to the internal error amplifier that is compared against the 2.495 V bandgap. Typically tied to the tap of an external R1/R2 divider from cathode to anode to program Vka = Vref x (1 + R1/R2) + Iref x R1. Input current 1.8 uA typ, 4.0 uA max at 25 C."
      },
      {
        "number": "2",
        "name": "A",
        "type": "power_in",
        "description": "Anode. Common/ground-side terminal of the shunt regulator; the internal reference and error amp are referenced to this pin. For SOT-89 the heat sink tab is electrically common to pin 2 (Anode)."
      },
      {
        "number": "3",
        "name": "K",
        "type": "power_in",
        "description": "Cathode. Regulated shunt output; sinks current through an external series resistor from the supply to hold Vka at the programmed value. Absolute max Vka = 37 V; continuous cathode current range -100 to +150 mA; minimum cathode current for regulation 0.5 mA typ (1.0 mA max)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/1912111437_KEC-Semicon-KIA431AF-RTF-PC_C465009.pdf",
        "pages": 7,
        "sha256": "b0b1ac14e62a5a3f",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -1.95,
        -1.5
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-89-3@sha256:0b8db9f4a8f2547a",
      "mark": "drawn"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "KEC Semicon",
      "Package": "SOT-89-3",
      "Category": "PMIC",
      "Pins": "3"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "kia431af-rtf"
  ],
  "discovery_pitch": "KIA431AF-RTF (KEC Semicon) 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",
    "kia431af-rtf.kicad_sym",
    "kia431af-rtf.kicad_mod",
    "kia431af-rtf.glb",
    "kia431af-rtf.step",
    "kia431af-rtf-etched.step",
    "kia431af-rtf.lbr",
    "docs/hero.png",
    "docs/kia431af-rtf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "KIA431AF-RTFF",
      "kind": "packaging"
    },
    {
      "mpn": "KIA431AF-RTFZF",
      "kind": "packaging"
    },
    {
      "mpn": "KIA431AF-RTF",
      "kind": "packaging"
    },
    {
      "mpn": "KIA431AF-RTFBF",
      "kind": "packaging"
    },
    {
      "mpn": "KIA431AF-RTF(blank)",
      "kind": "packaging"
    },
    {
      "mpn": "KIA431AF-RTFZ",
      "kind": "packaging"
    },
    {
      "mpn": "KIA431AF-RTFA",
      "kind": "packaging"
    },
    {
      "mpn": "KIA431AF-RTFB",
      "kind": "packaging"
    },
    {
      "mpn": "KIA431AF-RTFM",
      "kind": "packaging"
    },
    {
      "mpn": "KIA431AF-RTFZM",
      "kind": "packaging"
    },
    {
      "mpn": "KIA431AF-RTFAM",
      "kind": "packaging"
    },
    {
      "mpn": "KIA431AF-RTFBM",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-24T23:20:43.409Z"
}