WS2812B-B

{
  "slug": "ws2812b-b",
  "version": "0.1.0",
  "type": "component",
  "description": "Worldsemi RGB LEDs(Built-In IC), SMD5050-4P. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "optoelectronics",
    "ws2812b-b",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ws2812b-b.kicad_sym",
    "ws2812b-b.kicad_mod",
    "ws2812b-b.glb",
    "ws2812b-b.step",
    "ws2812b-b.lbr",
    "docs/hero.png",
    "docs/ws2812b-b-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ws2812b-b-hero.glb",
    "ws2812b-b-hero.overlay.json"
  ],
  "component": {
    "mpn": "WS2812B-B",
    "manufacturer": "Worldsemi",
    "package": "SMD5050-4P",
    "pin_count": 4,
    "category": "Optoelectronics",
    "subcategory": "RGB LEDs(Built-In IC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588893982302875648",
    "parts": {
      "symbol": "ws2812b-b.kicad_sym",
      "footprint": "ws2812b-b.kicad_mod",
      "model_3d": "ws2812b-b-hero.glb",
      "model_3d_plain": "ws2812b-b.glb",
      "model_3d_step": "ws2812b-b-etched.step",
      "model_3d_step_plain": "ws2812b-b.step",
      "lbr": "ws2812b-b.lbr"
    },
    "distributor_links": {
      "lcsc": "C2761795"
    },
    "distributor_check": {
      "checked_at": "2026-10-07T21:28:22Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply input for the LED and control circuit; the datasheet's absolute maximum power supply voltage range is +3.7~+5.3 V."
      },
      {
        "number": "2",
        "name": "DOUT",
        "type": "output",
        "description": "Control data signal output that sends the reshaped data from DIN to the next cascaded pixel."
      },
      {
        "number": "3",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground for data and power; the datasheet specifies VSS = 0 V as the reference."
      },
      {
        "number": "4",
        "name": "DIN",
        "type": "input",
        "description": "Control data signal input; the datasheet gives VIH min 2.7 V and VIL max 0.7 V, with logic input voltage limits of VDD-0.3 V to VDD+0.7 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet covers the WS2812B (Ver. V5) and never mentions the suffix 'WS2812B-B'. The modify rec; The datasheet does not print the package name 'SMD5050-4P'. It describes a 5050-size package with a "
        ],
        "pages_sent": 8,
        "cost_usd": 0.0292,
        "at": "2026-10-07T21:28:08"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588893982302875648",
        "pages": 8,
        "sha256": "70b853f11ea50ddd",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 4,
        "described": 4,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ws2812b-b.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.4,
          5.0,
          1.6
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "637199c792cc5581f13c630b8ea641c3d770ebc3f87475da122d395f340d713a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ws2812b-b-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.4,
          5.0,
          1.6
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "86da65b3c4d16de4fafeb39870dbe272a2ba75d1748367fcfd7c70216a1ee127",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}