main
Ray Set visibility: public 51d0db7 16d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "ds8402-33s3",
  "title": "DS8402-33S3",
  "brief": "DSTECH Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-3. 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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    "power management (pmic)",
    "ds8402-33s3",
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  "component": {
    "mpn": "DS8402-33S3",
    "manufacturer": "DSTECH",
    "package": "SOT-23-3",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/2c05e3fc7be42ee1e07fbfddadbea9b9.pdf",
    "parts": {
      "symbol": "ds8402-33s3.kicad_sym",
      "footprint": "ds8402-33s3.kicad_mod",
      "model_3d": "ds8402-33s3-hero.glb",
      "model_3d_plain": "ds8402-33s3-etched.glb",
      "model_3d_step": "ds8402-33s3-etched.step",
      "model_3d_step_plain": "ds8402-33s3.step",
      "lbr": "ds8402-33s3.lbr"
    },
    "distributor_links": {
      "lcsc": "C48533049"
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    "distributor_check": {
      "checked_at": "2026-10-17T21:22:18Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
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    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the regulator; the input and output capacitors must return to this pin through as wide and as short a copper trace as is practical."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output of the DS8402-33 (fixed 3.3V), limited to 350mA typical current limit and stable with a 1µF to 22µF output capacitor of at least 1mΩ ESR."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input with a recommended range of 2.5V to 36V; place an input capacitor of 1µF or larger close to the VIN and GND pins."
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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        "pages_sent": 13,
        "cost_usd": 0.0516,
        "at": "2026-10-17T21:20:12"
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        "pages": 13,
        "sha256": "920d1bd86b5963da",
        "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
      }
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    "viewers": {
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "16964b14f93e6c778288a0c110b35f670fab733109c26f0da7dfc07cc3350040",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
        "file": "ds8402-33s3-etched.step",
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        "sha256": "cfc158b7cfa471a1a1531469c3c3a20db38ed64602f19e695162172f6f1f9ca0",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "DSTECH",
      "Package": "SOT-23-3",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "appearance": {
      "contacts": {
        "quote": "must be back to the DS8402 ground pin using as wide and as short of a copper trace as is practical.",
        "page": 9,
        "doc": "ds.pdf",
        "material": "copper"
      },
      "version": 1,
      "datasheet_sha256": "920d1bd86b5963da15f295f163f14163ffa5ed166818a6897c5839669988aa25"
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    "characteristics": {
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      "source": "datasheet",
      "datasheet_sha256": "920d1bd86b5963da15f295f163f14163ffa5ed166818a6897c5839669988aa25",
      "rows": [
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          "name": "Supply Voltage",
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          "unit": "V",
          "min": 2.5,
          "typ": null,
          "max": 36,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "DC Output Voltage Accuracy",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "ILOAD =0.1mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Dropout Voltage (VOUT = 3.3V)",
          "symbol": "VDROP_3.3V",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.38,
          "conditions": "ILOAD =100mA, VOUT = 3.3V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "ΔLINE",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "ILOAD =1mA, 10V ≤ VIN ≤ 20V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "ΔLOAD",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "10mA≤ ILOAD ≤ 0.1A",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Current Limit",
          "symbol": "ILIM",
          "kind": "electrical",
          "unit": "mA",
          "min": 201,
          "typ": 350,
          "max": null,
          "conditions": "VOUT =0V",
          "source_page": 5,
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        },
        {
          "name": "Input Voltage (recommended operating)",
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          "kind": "recommended_operating",
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        },
        {
          "name": "Junction Temperature Range",
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          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
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          "source": "datasheet"
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        {
          "name": "Ambient Temperature Range",
          "symbol": "TA",
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          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
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        },
        {
          "name": "VIN to GND",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 40,
          "conditions": "",
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        },
        {
          "name": "VOUT to GND",
          "symbol": "VOUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 14,
          "conditions": "",
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        {
          "name": "VOUT to VIN",
          "symbol": "VOUT-VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -40,
          "typ": null,
          "max": 0.3,
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          "source": "datasheet"
        },
        {
          "name": "Lead Temperature (Soldering, 10 sec.)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "oC",
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          "max": 260,
          "conditions": "Soldering, 10 sec.",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Junction Temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "oC",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "oC",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "ESD HBM",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "KV",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "HBM",
          "source_page": 4,
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        },
        {
          "name": "ESD MM",
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          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "MM",
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        },
        {
          "name": "Package Thermal Resistance, SOT-23-3",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "oC /W",
          "min": null,
          "typ": 220,
          "max": null,
          "conditions": "SOT-23-5, SOT-23-3; TA=25°C on DSTECH EVB board",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent (Ground) Current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "ILOAD = 0mA, VOUT ≤ 5V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Thermal Shutdown Temperature",
          "symbol": "TSD",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 160,
          "max": null,
          "conditions": "ILOAD =10mA",
          "source_page": 5,
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        },
        {
          "name": "Thermal Shutdown Hysteresis",
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          "kind": "electrical",
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          "min": null,
          "typ": 30,
          "max": null,
          "conditions": "",
          "source_page": 5,
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        },
        {
          "name": "Power Supply Rejection Ratio",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 70,
          "max": null,
          "conditions": "VOUT =3.3V, ILOAD =30mA, VIN = 12V, f = 1KHz",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input Capacitor",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "μF",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "Input capacitor placed close to VIN and GND pins",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Output Capacitor Effective Capacitance",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "μF",
          "min": 1,
          "typ": null,
          "max": 22,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Output Capacitor ESR",
          "symbol": "ESR",
          "kind": "recommended_operating",
          "unit": "mΩ",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "Minimum ESR for output capacitor",
          "source_page": 8,
          "source": "datasheet"
        }
      ]
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  "discovery_pitch": "DS8402-33S3 (DSTECH) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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