MCP4251-104E

{
  "slug": "mcp4251-104e",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech Digital Potentiometers, TSSOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "data acquisition",
    "mcp4251-104e",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
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    "mcp4251-104e.step",
    "mcp4251-104e.lbr",
    "docs/hero.png",
    "docs/mcp4251-104e-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mcp4251-104e-hero.glb",
    "mcp4251-104e-hero.overlay.json",
    "mcp4251-104e-etched.glb"
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  "component": {
    "mpn": "MCP4251-104E",
    "manufacturer": "Microchip Tech",
    "package": "TSSOP-14",
    "pin_count": 14,
    "category": "Data Acquisition",
    "subcategory": "Digital Potentiometers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589807999771709440",
    "parts": {
      "symbol": "mcp4251-104e.kicad_sym",
      "footprint": "mcp4251-104e.kicad_mod",
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      "model_3d_plain": "mcp4251-104e-etched.glb",
      "model_3d_step": "mcp4251-104e-etched.step",
      "model_3d_step_plain": "mcp4251-104e.step",
      "lbr": "mcp4251-104e.lbr"
    },
    "distributor_links": {
      "lcsc": "C637079"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T17:21:05Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CS",
        "type": "input",
        "description": "SPI chip select input: forcing CS to VIL enables serial commands and forcing it to VIHH enables high-voltage serial commands; the input is high-voltage tolerant with Schmitt trigger and up to 12.5V."
      },
      {
        "number": "2",
        "name": "SCK",
        "type": "input",
        "description": "SPI serial clock input (10 MHz, SPI modes 0,0 and 1,1), high-voltage tolerant with Schmitt trigger and an internal smart weak pull-up."
      },
      {
        "number": "3",
        "name": "SDI",
        "type": "input",
        "description": "SPI serial data input, connected to the host controller's SDO pin; high-voltage tolerant with Schmitt trigger input."
      },
      {
        "number": "4",
        "name": "VSS",
        "type": "power_in",
        "description": "Device ground reference; terminal voltages on all potentiometer terminals must be between VSS and VDD."
      },
      {
        "number": "5",
        "name": "P1B",
        "type": "passive",
        "description": "Potentiometer 1 terminal B, the fixed connection to the zero-scale wiper value (0x00); the voltage must be between VSS and VDD and it can carry positive or negative current."
      },
      {
        "number": "6",
        "name": "P1W",
        "type": "passive",
        "description": "Potentiometer 1 wiper terminal; the voltage must be between VSS and VDD and it can carry positive or negative current."
      },
      {
        "number": "7",
        "name": "P1A",
        "type": "passive",
        "description": "Potentiometer 1 terminal A, the fixed connection to the full-scale wiper value (0x100 for 8-bit devices); the voltage must be between VSS and VDD and it can carry positive or negative current."
      },
      {
        "number": "8",
        "name": "P0A",
        "type": "passive",
        "description": "Potentiometer 0 terminal A, the fixed connection to the full-scale wiper value (0x100 for 8-bit devices); the voltage must be between VSS and VDD and it can carry positive or negative current."
      },
      {
        "number": "9",
        "name": "P0W",
        "type": "passive",
        "description": "Potentiometer 0 wiper terminal; the voltage must be between VSS and VDD and it can carry positive or negative current."
      },
      {
        "number": "10",
        "name": "P0B",
        "type": "passive",
        "description": "Potentiometer 0 terminal B, the fixed connection to the zero-scale wiper value (0x00); the voltage must be between VSS and VDD and it can carry positive or negative current."
      },
      {
        "number": "11",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection; the datasheet recommends connecting it to VDD or VSS to reduce possible noise coupling."
      },
      {
        "number": "12",
        "name": "SHDN",
        "type": "input",
        "description": "Hardware shutdown input that forces the resistor network terminals into the hardware shutdown state; high-voltage tolerant with Schmitt trigger input."
      },
      {
        "number": "13",
        "name": "SDO",
        "type": "output",
        "description": "SPI serial data output connected to the host controller's SDI pin, used to read wiper/TCON/status registers; it is an open-drain output using the internal smart pull-up, so external pull-up resistors can increase its rate."
      },
      {
        "number": "14",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive power supply input referenced to VSS; the operating range is 1.8V to 5.5V, and electrical performance may not meet the data sheet specifications while VDD is below 2.7V."
      }
    ],
    "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: Page 1 package drawing for MCP42X1 (PDIP/SOIC/TSSOP) labels the right-side pin in the 11-14 group as; Table 3-1 gives the 14-lead column for MCP42X1 dual potentiometer devices. The MCP4251 is a dual pot; The pin type for SDO is taken as output per Table 3-1 (O), while Note 3 describes it as an open-drai"
        ],
        "pages_sent": 19,
        "cost_usd": 0.0687,
        "at": "2026-10-20T17:19:26"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589807999771709440",
        "pages": 88,
        "sha256": "6c60b083b2ef0a92",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 14,
        "described": 14,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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        "zmin_mm": -0.0,
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        "checked": "2026-10-20",
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        "checked": "2026-10-20",
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  }
}