AT2402E

{
  "slug": "at2402e",
  "version": "0.1.0",
  "type": "component",
  "description": "ZHONGKEWEI RF Front End Circuits, QFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "rf & radio",
    "at2402e",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "at2402e.kicad_sym",
    "at2402e.kicad_mod",
    "at2402e.glb",
    "at2402e.step",
    "at2402e.lbr",
    "docs/hero.png",
    "docs/at2402e-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "at2402e-hero.glb",
    "at2402e-hero.overlay.json",
    "at2402e-etched.glb"
  ],
  "component": {
    "mpn": "AT2402E",
    "manufacturer": "ZHONGKEWEI",
    "package": "QFN-16-EP(3x3)",
    "pin_count": 17,
    "category": "RF & Radio",
    "subcategory": "RF Front End Circuits",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/1dcf382c7f2aa954a6f79364ed692e3b.pdf",
    "parts": {
      "symbol": "at2402e.kicad_sym",
      "footprint": "at2402e.kicad_mod",
      "model_3d": "at2402e-hero.glb",
      "model_3d_plain": "at2402e-etched.glb",
      "model_3d_step": "at2402e-etched.step",
      "model_3d_step_plain": "at2402e.step",
      "lbr": "at2402e.lbr"
    },
    "distributor_links": {
      "lcsc": "C2901458"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T03:33:33Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RX",
        "type": "output",
        "description": "Receive RF signal port, DC-grounded internally."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; all GND pins must be connected to ground in use."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; all GND pins must be connected to ground in use."
      },
      {
        "number": "4",
        "name": "TX",
        "type": "input",
        "description": "Transmit RF signal port, DC-grounded internally."
      },
      {
        "number": "5",
        "name": "TXEN",
        "type": "input",
        "description": "CMOS transmit-enable control input; high level >1.2V, low <0.3V."
      },
      {
        "number": "6",
        "name": "RXEN",
        "type": "input",
        "description": "CMOS receive-enable control input; high level >1.2V, low <0.3V."
      },
      {
        "number": "7",
        "name": "DET",
        "type": "output",
        "description": "Output power detector, analog voltage output (0.15-1.5V for Pout +5 to +20dBm)."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; all GND pins must be connected to ground in use."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; all GND pins must be connected to ground in use."
      },
      {
        "number": "10",
        "name": "ANT",
        "type": "bidirectional",
        "description": "Antenna port: power amplifier output or LNA input, DC-grounded internally."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; all GND pins must be connected to ground in use."
      },
      {
        "number": "12",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; all GND pins must be connected to ground in use."
      },
      {
        "number": "13",
        "name": "DNC",
        "type": "unconnected",
        "description": "Do not connect; leave floating."
      },
      {
        "number": "14",
        "name": "VDD",
        "type": "power_in",
        "description": "Optional supply connection, internally tied to pin 16 and may be left unconnected (supply 2.0-3.6V, abs max 4.5V)."
      },
      {
        "number": "15",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; all GND pins must be connected to ground in use."
      },
      {
        "number": "16",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply voltage input pin, 2.0V to 3.6V operating (3.3V typical), 4.5V absolute maximum."
      },
      {
        "number": "17",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (exposed pad); must be connected to ground in use."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Datasheet gives no explicit direction for RF ports; RX (output), TX (input), ANT (bidirectional) and"
        ],
        "pages_sent": 15,
        "cost_usd": 0.0668,
        "at": "2026-10-23T03:33:11"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/1dcf382c7f2aa954a6f79364ed692e3b.pdf",
        "pages": 15,
        "sha256": "413ac3dbd631aa0d",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 17,
        "described": 17,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "at2402e.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.0,
          3.0,
          0.785
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3eb81ffac423a66cdcfead8efe56401da171edaf1f2257049aad7b2d3900f6c8",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "at2402e-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.0,
          3.0,
          0.785
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7a65b6c6d1fd9da82faaa7c16187367a8739526738a98295c424eb350ed1b055",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}