BL9161G-33BARN

{
  "schema_version": 1,
  "type": "component",
  "slug": "bl9161g-33barn",
  "title": "BL9161G-33BARN",
  "brief": "BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "bl9161g-33barn"
  ],
  "component": {
    "mpn": "BL9161G-33BARN",
    "manufacturer": "BL Shanghai Belling",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2109301330_BL-Shanghai-Belling-BL9161G-33BARN_C2902574.pdf",
    "parts": {
      "symbol": "bl9161g-33barn.kicad_sym",
      "footprint": "bl9161g-33barn.kicad_mod",
      "model_3d": "bl9161g-33barn-etched.glb",
      "model_3d_plain": "bl9161g-33barn.glb",
      "model_3d_step": "bl9161g-33barn-etched.step",
      "model_3d_step_plain": "bl9161g-33barn.step",
      "lbr": "bl9161g-33barn.lbr"
    },
    "distributor_links": {
      "lcsc": "C2902574"
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Power input voltage. Operating range 2.2V to 6V (absolute max -0.3V to +6V). Bypass with ≥1µF ceramic capacitor located within 0.5 inch of the pin."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground. Should be the common return for VIN and VOUT bypass capacitors; separate VIN/VOUT ground planes are recommended, joined only at this pin."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Chip enable input. Active high with an internal pull-down resistor (suffix 'A'). VIH ≥ 1.2V turns the LDO on; VIL ≤ 0.4V places it in shutdown (typ 0.01µA ISTBY). May be tied to VIN for always-on operation."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. May be left floating or tied to ground for improved PCB layout."
      },
      {
        "number": "5",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output voltage (3.3V for the -33 option, ±2% accuracy). Delivers up to 300mA with 205mV dropout at 300mA. Requires a ≥1µF ceramic output capacitor (ESR > 25mΩ) for stability; a fast output discharge circuit pulls VOUT down when EN is de-asserted."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2109301330_BL-Shanghai-Belling-BL9161G-33BARN_C2902574.pdf",
        "pages": 12,
        "sha256": "80128448c1757d7f",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -1.1375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23-5@sha256:455a3f7c3e5eb5b8",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "bl9161g-33barn.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bl9161g-33barn-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "a7b5d83223737d072b83f063c269be5d4da11db190e913abd5c062750b73f8c9",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "BL Shanghai Belling",
      "Package": "SOT-23-5",
      "Category": "PMIC",
      "Pins": "5"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bl9161g-33barn"
  ],
  "discovery_pitch": "BL9161G-33BARN (BL Shanghai Belling) 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",
    "bl9161g-33barn.kicad_sym",
    "bl9161g-33barn.kicad_mod",
    "bl9161g-33barn.glb",
    "bl9161g-33barn.step",
    "bl9161g-33barn-etched.step",
    "bl9161g-33barn.lbr",
    "docs/hero.png",
    "docs/bl9161g-33barn-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:57:59.668Z"
}