MCP4021-202E

{
  "slug": "mcp4021-202e",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech Digital Potentiometers, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "data acquisition",
    "mcp4021-202e",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mcp4021-202e.kicad_sym",
    "mcp4021-202e.kicad_mod",
    "mcp4021-202e.glb",
    "mcp4021-202e.step",
    "mcp4021-202e.lbr",
    "docs/hero.png",
    "docs/mcp4021-202e-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mcp4021-202e-hero.glb",
    "mcp4021-202e-hero.overlay.json",
    "mcp4021-202e-etched.glb"
  ],
  "component": {
    "mpn": "MCP4021-202E",
    "manufacturer": "Microchip Tech",
    "package": "MSOP-8",
    "pin_count": 8,
    "category": "Data Acquisition",
    "subcategory": "Digital Potentiometers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590909974140960768",
    "parts": {
      "symbol": "mcp4021-202e.kicad_sym",
      "footprint": "mcp4021-202e.kicad_mod",
      "model_3d": "mcp4021-202e-hero.glb",
      "model_3d_plain": "mcp4021-202e-etched.glb",
      "model_3d_step": "mcp4021-202e-etched.step",
      "model_3d_step_plain": "mcp4021-202e.step",
      "lbr": "mcp4021-202e.lbr"
    },
    "distributor_links": {
      "lcsc": "C636025"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T06:41:32Z",
      "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": "Positive power supply input, specified from 2.7V to 5.5V relative to VSS, with a decoupling capacitor on VDD to VSS recommended for maximum performance."
      },
      {
        "number": "2",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "3",
        "name": "A",
        "type": "bidirectional",
        "description": "Potentiometer terminal A, the fixed connection to the 0x3F tap; the voltage must stay between VSS and VDD and it can carry both positive and negative current."
      },
      {
        "number": "4",
        "name": "W",
        "type": "bidirectional",
        "description": "Potentiometer wiper terminal, the adjustable tap; the voltage must stay between VSS and VDD and it can carry both positive and negative current."
      },
      {
        "number": "5",
        "name": "CS",
        "type": "input",
        "description": "Chip select input: driving VIL enables serial commands, driving VIHH enables high-voltage commands that also control WiperLock, and an internal pull-up holds it at VIH when floating."
      },
      {
        "number": "6",
        "name": "B",
        "type": "bidirectional",
        "description": "Potentiometer terminal B, the fixed connection to the 0x00 tap; the voltage must stay between VSS and VDD and it can carry both positive and negative current."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "8",
        "name": "U/D",
        "type": "input",
        "description": "TTL-compatible increment/decrement input that moves the wiper one step toward terminal A when incremented and toward terminal B when decremented."
      }
    ],
    "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 pin table on page 25 is headed 'MCP4021 (SOIC-8)'; no MSOP-specific pin table or MSOP pin diagra"
        ],
        "pages_sent": 18,
        "cost_usd": 0.052,
        "at": "2026-10-19T06:41:15"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590909974140960768",
        "pages": 74,
        "sha256": "6d9ee87ab7f5b4fc",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "mcp4021-202e.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3.0,
          0.95
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "847c4c5023fe1603fbd36900a5dcc4bd3901ba473f71d42c9a469f0236eaadf3",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mcp4021-202e-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3.0,
          0.95
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "57f654b638291c84c9768b82989ddf1caeffc79359044f13b442a49bbaded900",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}