main
Ray Set visibility: public f40c27a 2d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "wl2855k33-3",
  "title": "WL2855K33-3",
  "brief": "WILLSEMI(Will Semicon) Linear Voltage Regulators (LDO), SOT-89-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "package": "SOT-89-3L",
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    "category": "Power Management ICs",
    "subcategory": "Linear Voltage Regulators (LDO)",
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    "distributor_links": {
      "lcsc": "C2931320"
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      "source": "Component Ocean /api/assign-pns",
      "digikey": {
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        "status": "no match"
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      "mouser": {
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        "status": "no match"
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        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin for the regulator."
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      {
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        "number": "3",
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        "type": "power_out",
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        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 12,
        "cost_usd": 0.0205,
        "at": "2026-11-05T02:49:04"
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        "pages": 12,
        "sha256": "90e7ddca9a068e82",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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        "role": "plain",
        "up": "Z",
        "units": "mm",
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        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "844c0bb504d0c383535d9845c6376fe7a4053241a2ede8d8ef694df3fcfc37c8",
        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
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        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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    "package_dims": {
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      "source_page": 10,
      "D": {
        "nom_mm": 4.5,
        "range_mm": [
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      "E1": {
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        "range_mm": [
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      "E": {
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        "range_mm": [
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      "e": {
        "nom_mm": 1.5,
        "range_mm": [
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          null
        ]
      },
      "A": {
        "nom_mm": 1.5,
        "range_mm": [
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          1.6
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "wl2855k33-3.step",
        "verdict": "PASS",
        "reasons": [
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        ],
        "by": "factory/package_fit.py"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "WILLSEMI(Will Semicon)",
      "Package": "SOT-89-3L",
      "Category": "Power Management ICs",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "90e7ddca9a068e8217f0cc9ea70736ffffedbc740bbf10406c27950ae26de8e2",
      "rows": [
        {
          "name": "Output Voltage (VOUT>2.5V), printed as 0.99*Vout to 1.01*Vout",
          "symbol": "VOUT",
          "kind": "tolerance",
          "unit": "x VOUT",
          "min": 0.99,
          "typ": null,
          "max": 1.01,
          "conditions": "VOUT>2.5V; printed as 0.99* Vout (min) and 1.01* Vout (max); Ta=25°C, VIN=VOUT+1V, CIN=COUT=1µF, IOUT=1mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage",
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          "max": 12,
          "conditions": "",
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        {
          "name": "Current Limit",
          "symbol": "ILIM",
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          "min": 500,
          "typ": null,
          "max": null,
          "conditions": "VIN≥3.3V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Dropout Voltage",
          "symbol": "VDROP",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 940,
          "max": 1200,
          "conditions": "VOUT=3.3V, IOUT=500mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "ΔVLINE",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 1,
          "max": 5,
          "conditions": "VIN=VOUT+1~12V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
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          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 30,
          "max": 50,
          "conditions": "IOUT=1~500mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 1,
          "max": 2.2,
          "conditions": "VIN=4V, IOUT=0",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Short Current",
          "symbol": "ISHORT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 180,
          "max": null,
          "conditions": "VOUT short to GND",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Rejection Rate",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 70,
          "max": null,
          "conditions": "Vo=3.3V, Io=10mA, f=100Hz",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Power Supply Rejection Rate",
          "symbol": "PSRR",
          "kind": "electrical",
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          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "Vo=3.3V, Io=10mA, f=1kHz",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Rejection Rate",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 25,
          "max": null,
          "conditions": "Vo=3.3V, Io=10mA, f=10kHz",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Noise Voltage",
          "symbol": "eNO",
          "kind": "electrical",
          "unit": "μVRMS",
          "min": null,
          "typ": 54,
          "max": null,
          "conditions": "Vo=3.3V, Io=30mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 1.5,
          "conditions": "TA=25℃",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VIN Range",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 13.5,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VOUT Range",
          "symbol": "VOUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
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        {
          "name": "Lead Temperature Range",
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        {
          "name": "Storage Temperature Range",
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          "min": -55,
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          "conditions": "",
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        {
          "name": "Operating Junction Temperature Range",
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          "kind": "absolute_maximum",
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          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Operating Supply Voltage",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.5,
          "typ": null,
          "max": 12,
          "conditions": "",
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        },
        {
          "name": "Operating Temperature Range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, RθJA (SOT-89-3L)",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 77,
          "max": null,
          "conditions": "SOT-89-3L",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_triggers": [
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  "discovery_pitch": "WL2855K33-3 (WILLSEMI(Will Semicon)) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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