NRF51822-QFAC-R

{
  "schema_version": 1,
  "type": "component",
  "slug": "nrf51822-qfac-r",
  "title": "NRF51822-QFAC-R",
  "brief": "Nordic Semicon RF Transceiver ICs, QFN-48-EP(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "rf & radio",
    "nrf51822-qfac-r",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "NRF51822-QFAC-R",
    "manufacturer": "Nordic Semicon",
    "package": "QFN-48-EP(6x6)",
    "pin_count": 49,
    "category": "RF & Radio",
    "subcategory": "RF Transceiver ICs",
    "datasheet": "https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/6470/NRF51822-QFAC-R.pdf",
    "parts": {
      "symbol": "nrf51822-qfac-r.kicad_sym",
      "footprint": "nrf51822-qfac-r.kicad_mod",
      "model_3d": "nrf51822-qfac-r-hero.glb",
      "model_3d_plain": "nrf51822-qfac-r-etched.glb",
      "model_3d_step": "nrf51822-qfac-r-etched.step",
      "model_3d_step_plain": "nrf51822-qfac-r.step",
      "lbr": "nrf51822-qfac-r.lbr"
    },
    "distributor_links": {
      "lcsc": "C267287",
      "digikey": "4823-NRF51822-QFAC-RTR-ND"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T12:29:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "4823-NRF51822-QFAC-RTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply input; Table 20 gives a supply range of 1.8 V to 3.6 V with the internal LDO setup."
      },
      {
        "number": "2",
        "name": "DCC",
        "type": "power_out",
        "description": "DC/DC converter output voltage to an external LC filter."
      },
      {
        "number": "3",
        "name": "P0.30",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "4",
        "name": "P0.00 (AREF0)",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin that also serves as ADC/LPCOMP reference input 0."
      },
      {
        "number": "5",
        "name": "P0.01 (AIN2)",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin that also serves as ADC/LPCOMP analog input 2."
      },
      {
        "number": "6",
        "name": "P0.02 (AIN3)",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin that also serves as ADC/LPCOMP analog input 3."
      },
      {
        "number": "7",
        "name": "P0.03 (AIN4)",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin that also serves as ADC/LPCOMP analog input 4."
      },
      {
        "number": "8",
        "name": "P0.04 (AIN5)",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin that also serves as ADC/LPCOMP analog input 5."
      },
      {
        "number": "9",
        "name": "P0.05 (AIN6)",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin that also serves as ADC/LPCOMP analog input 6."
      },
      {
        "number": "10",
        "name": "P0.06 (AIN7/AREF1)",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin that also serves as ADC/LPCOMP analog input 7 and ADC/LPCOMP reference input 1."
      },
      {
        "number": "11",
        "name": "P0.07",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "12",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply input; Table 20 gives a supply range of 1.8 V to 3.6 V with the internal LDO setup."
      },
      {
        "number": "13",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground (0 V); must be connected to the exposed center pad and the PCB ground."
      },
      {
        "number": "14",
        "name": "P0.08",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "15",
        "name": "P0.09",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "16",
        "name": "P0.10",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "17",
        "name": "P0.11",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "18",
        "name": "P0.12",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "19",
        "name": "P0.13",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "20",
        "name": "P0.14",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "21",
        "name": "P0.15",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "22",
        "name": "P0.16",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "23",
        "name": "SWDIO/nRESET",
        "type": "bidirectional",
        "description": "System reset input (active low) and hardware debug and flash programming I/O (SWDIO)."
      },
      {
        "number": "24",
        "name": "SWDCLK",
        "type": "input",
        "description": "Serial Wire Debug clock input used for hardware debug and flash programming."
      },
      {
        "number": "25",
        "name": "P0.17",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "26",
        "name": "P0.18",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "27",
        "name": "P0.19",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "28",
        "name": "P0.20",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "29",
        "name": "DEC2",
        "type": "power_in",
        "description": "Power supply decoupling pin; per Table 19 DEC2 must not exceed 2 V."
      },
      {
        "number": "30",
        "name": "VDD_PA",
        "type": "power_out",
        "description": "Power supply output (+1.6 V) for the on-chip RF power amplifier."
      },
      {
        "number": "31",
        "name": "ANT1",
        "type": "passive",
        "description": "Differential RF antenna connection (TX and RX) that requires a matching network to a 50 Ω antenna."
      },
      {
        "number": "32",
        "name": "ANT2",
        "type": "passive",
        "description": "Differential RF antenna connection (TX and RX) that requires a matching network to a 50 Ω antenna."
      },
      {
        "number": "33",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground (0 V)."
      },
      {
        "number": "34",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground (0 V)."
      },
      {
        "number": "35",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog power supply for the radio."
      },
      {
        "number": "36",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog power supply for the radio."
      },
      {
        "number": "37",
        "name": "XC1",
        "type": "input",
        "description": "Connection for a 16/32 MHz crystal or an external 16 MHz clock reference."
      },
      {
        "number": "38",
        "name": "XC2",
        "type": "output",
        "description": "Connection for a 16/32 MHz crystal."
      },
      {
        "number": "39",
        "name": "DEC1",
        "type": "power_in",
        "description": "Power supply decoupling pin."
      },
      {
        "number": "40",
        "name": "P0.21",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "41",
        "name": "P0.22",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "42",
        "name": "P0.23",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "43",
        "name": "P0.24",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "44",
        "name": "P0.25",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "45",
        "name": "P0.26 (AIN0/XL2)",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin that also serves as ADC/LPCOMP analog input 0 and the 32.768 kHz crystal connection XL2."
      },
      {
        "number": "46",
        "name": "P0.27 (AIN1/XL1)",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin that also serves as ADC/LPCOMP analog input 1 and the 32.768 kHz crystal or external clock reference connection XL1."
      },
      {
        "number": "47",
        "name": "P0.28",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "48",
        "name": "P0.29",
        "type": "bidirectional",
        "description": "General purpose digital I/O pin."
      },
      {
        "number": "49",
        "name": "VSS",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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 exposed die pad (thermal/ground pad) is shown in the pin figure on page 12 and footnote 1 on pag; The pin table on pages 13-14 is the generic QFN48 pin function table. The excerpt does not include S; Pin types were mapped from the datasheet's terms: 'Digital I/O' -> bidirectional, 'Analog input' -> ",
          "exposed pad 49 added from the footprint"
        ],
        "pages_sent": 31,
        "cost_usd": 0.1401,
        "at": "2026-10-21T12:19:19"
      },
      "datasheet": {
        "url": "https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/6470/NRF51822-QFAC-R.pdf",
        "pages": 130,
        "sha256": "3ed0b4fca3ce6b0d",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 49,
        "described": 49,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "nrf51822-qfac-r.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.02,
          6.02,
          0.9
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "df4404723de46d24d00bc546c82f27223251bd8bca959758a37b4eef7a420c30",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "nrf51822-qfac-r-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "be132ce96069250c9962b513cfde38ee3c9357b88da1ace832916f606f73989c",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Nordic Semicon",
      "Package": "QFN-48-EP(6x6)",
      "Category": "RF & Radio",
      "Pins": "49"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "3ed0b4fca3ce6b0d5ca335e9dd8e37fe14b4625c60c2d559f54218480dde8b2e",
      "rows": [
        {
          "name": "Supply voltage VDD",
          "symbol": "VDD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 3.9,
          "conditions": "",
          "source_page": 38,
          "source": "datasheet"
        },
        {
          "name": "I/O pin voltage",
          "symbol": "VIO",
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          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 38,
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        },
        {
          "name": "Storage temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "Environmental QFN48 package",
          "source_page": 38,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage, internal LDO setup",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.8,
          "typ": 3,
          "max": 3.6,
          "conditions": "Internal LDO setup",
          "source_page": 39,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage, DC/DC converter setup",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.1,
          "typ": 3,
          "max": 3.6,
          "conditions": "DC/DC converter setup",
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        },
        {
          "name": "Supply voltage, low voltage mode setup",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.75,
          "typ": 1.8,
          "max": 1.95,
          "conditions": "Low voltage mode setup; DEC2 shall be connected to VDD in this mode",
          "source_page": 39,
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        },
        {
          "name": "Operating temperature",
          "symbol": "TA",
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          "unit": "°C",
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          "typ": 25,
          "max": 75,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Frequency tolerance, 16 MHz crystal oscillator",
          "symbol": "fTOL,X16M",
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          "source_page": 41,
          "source": "datasheet"
        },
        {
          "name": "Frequency tolerance, Bluetooth low energy applications, 16 MHz crystal oscillator",
          "symbol": "fTOL,X16M,BLE",
          "kind": "tolerance",
          "unit": "ppm",
          "min": -40,
          "typ": null,
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          "source": "datasheet"
        },
        {
          "name": "Frequency tolerance, 32 MHz crystal oscillator",
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        {
          "name": "Frequency tolerance, Bluetooth low energy applications, 32 MHz crystal oscillator",
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        {
          "name": "Frequency tolerance, 16 MHz RC oscillator",
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          "name": "Frequency tolerance, 32.768 kHz crystal oscillator, Bluetooth low energy applications",
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          "name": "Frequency tolerance, 32.768 kHz RC oscillator",
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          "source_page": 44,
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        {
          "name": "Frequency tolerance, 32.768 kHz RC oscillator calibration interval",
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          "kind": "tolerance",
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          "typ": null,
          "max": 250,
          "conditions": "Calibration interval 4 s",
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        {
          "name": "Frequency tolerance, 32.768 kHz synthesized oscillator, from 16M XOSC",
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        {
          "name": "Frequency tolerance, 32.768 kHz synthesized oscillator, from 32M XOSC",
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        {
          "name": "Threshold voltage tolerance",
          "symbol": "VTOL",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
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          "conditions": "",
          "source_page": 45,
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        },
        {
          "name": "Power on reset time, 10 μs rise time",
          "symbol": "tPOR, 10 μs",
          "kind": "timing",
          "unit": "ms",
          "min": 0.7,
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          "max": 19,
          "conditions": "10 μs rise time (0 V to VDD)",
          "source_page": 46,
          "source": "datasheet"
        },
        {
          "name": "Power on reset time, 1 ms rise time",
          "symbol": "tPOR, 1 ms",
          "kind": "timing",
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          "conditions": "1 ms rise time (0 V to VDD)",
          "source_page": 46,
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        },
        {
          "name": "Power on reset time, 10 ms rise time",
          "symbol": "tPOR, 10 ms",
          "kind": "timing",
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        {
          "name": "Power on reset time, 100 ms rise time",
          "symbol": "tPOR, 100 ms",
          "kind": "timing",
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          "min": 68,
          "typ": 101,
          "max": 115,
          "conditions": "100 ms rise time (0 V to VDD)",
          "source_page": 46,
          "source": "datasheet"
        },
        {
          "name": "Operating frequencies",
          "symbol": "fOP",
          "kind": "electrical",
          "unit": "MHz",
          "min": 2400,
          "typ": null,
          "max": 2483,
          "conditions": "1 MHz channel spacing",
          "source_page": 50,
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        },
        {
          "name": "Frequency deviation at 250 kbps",
          "symbol": "Δf250",
          "kind": "electrical",
          "unit": "kHz",
          "min": -170,
          "typ": null,
          "max": 170,
          "conditions": "",
          "source_page": 50,
          "source": "datasheet"
        },
        {
          "name": "Frequency deviation at 1 Mbps",
          "symbol": "Δf1M",
          "kind": "electrical",
          "unit": "kHz",
          "min": -170,
          "typ": null,
          "max": 170,
          "conditions": "",
          "source_page": 50,
          "source": "datasheet"
        },
        {
          "name": "Frequency deviation at 2 Mbps",
          "symbol": "Δf2M",
          "kind": "electrical",
          "unit": "kHz",
          "min": -320,
          "typ": null,
          "max": 320,
          "conditions": "",
          "source_page": 50,
          "source": "datasheet"
        },
        {
          "name": "Frequency deviation at BLE",
          "symbol": "ΔfBLE",
          "kind": "electrical",
          "unit": "kHz",
          "min": 225,
          "typ": 250,
          "max": 275,
          "conditions": "",
          "source_page": 50,
          "source": "datasheet"
        },
        {
          "name": "On-air data rate",
          "symbol": "bpsFSK",
          "kind": "electrical",
          "unit": "kbps",
          "min": 250,
          "typ": null,
          "max": 2000,
          "conditions": "",
          "source_page": 50,
          "source": "datasheet"
        },
        {
          "name": "Pull-up resistance",
          "symbol": "RPU",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 11,
          "typ": 13,
          "max": 16,
          "conditions": "",
          "source_page": 66,
          "source": "datasheet"
        },
        {
          "name": "Pull-down resistance",
          "symbol": "RPD",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 11,
          "typ": 13,
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