{
 "version": "2026-10-20",
 "license": "Dimension sheets: CC BY 4.0. Standard and published-size files: CC BY 4.0. Xem Studio's own designs (files_license = Xem Studio Design License): free to use and sell things from, not to redistribute as files — https://xemstudio.com/license/. Other publishers' files: their own license, linked beside them.",
 "slug": "spektrum-ar631-receiver",
 "name": "Spektrum AR631 6-channel AS3X/SAFE receiver",
 "kind": "modern",
 "category": "RC planes",
 "group": "Receivers",
 "year": null,
 "question": "What are the dimensions of the Spektrum AR631 6-channel AS3X/SAFE receiver?",
 "tags": [
  "rc plane",
  "rc airplane",
  "radio control",
  "model aircraft",
  "receivers"
 ],
 "aliases": [
  "ar631 dimensions",
  "spektrum ar631 size",
  "ar631 receiver mm",
  "spmar631",
  "ar631+ dimensions",
  "ar631 weight",
  "ar631 antenna length",
  "ar631 medidas",
  "ar631 abmessungen"
 ],
 "overall_mm": {
  "length": 39,
  "width": 24,
  "height": 14
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/spektrum-ar631-receiver/",
 "sheet_txt": "https://xemstudio.com/objects/spektrum-ar631-receiver/sheet.txt",
 "sheet": {
  "basis": "Manufacturer specifications (Spektrum (manual hosted by Lindinger), Spektrum (manual hosted by Astra))",
  "overall_mm": {
   "length": 39,
   "width": 24,
   "height": 14
  },
  "notes": [
   "From the Spektrum AR631 manual (SPMAR631). The AR631+ manual (SPM-1031) lists identical size, weight and antenna length.",
   "True size, no printing tolerance added. Only published numbers are used; anything not published is said so."
  ],
  "table": {
   "columns": [
    "dimension",
    "value"
   ],
   "rows": [
    [
     "Dimensions",
     "39 × 24 × 14 mm"
    ],
    [
     "Weight",
     "8 g"
    ],
    [
     "Channels",
     "6"
    ],
    [
     "Voltage",
     "3.5–9.6 V"
    ],
    [
     "Antenna length",
     "230 mm"
    ],
    [
     "Band",
     "2404–2476 MHz"
    ]
   ]
  }
 },
 "sheet_text": "Spektrum AR631 6-channel AS3X/SAFE receiver — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/spektrum-ar631-receiver/  (sheet CC BY 4.0)\nBasis: Manufacturer specifications (Spektrum (manual hosted by Lindinger), Spektrum (manual hosted by Astra))\nCatalog version: 2026-10-20\n\nOverall (mm): length 39, width 24, height 14\n- From the Spektrum AR631 manual (SPMAR631). The AR631+ manual (SPM-1031) lists identical size, weight and antenna length.\n- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.\n\ndimension  value\nDimensions  39 × 24 × 14 mm\nWeight  8 g\nChannels  6\nVoltage  3.5–9.6 V\nAntenna length  230 mm\nBand  2404–2476 MHz\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Spektrum (manual hosted by Lindinger): AR631 manual EN — web — Publisher's page; dimensions are facts — https://www.lindinger.at/media/37/53/fc/1637161466/9780804_EN_Manual.pdf\n- Spektrum (manual hosted by Astra): SPM-1031 AR631+ manual EN — web — Publisher's page; dimensions are facts — https://astramodel.cz/manualy/S/SPM-1031_MANUAL_EN.pdf\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/spektrum-ar631-receiver/index.json\nAPI: https://xemstudio.com/api/geometry?object=spektrum-ar631-receiver\n",
 "sources": [
  {
   "publisher": "Spektrum (manual hosted by Lindinger)",
   "title": "AR631 manual EN",
   "url": "https://www.lindinger.at/media/37/53/fc/1637161466/9780804_EN_Manual.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Spektrum (manual hosted by Astra)",
   "title": "SPM-1031 AR631+ manual EN",
   "url": "https://astramodel.cz/manualy/S/SPM-1031_MANUAL_EN.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "radiomaster-rp1-v2-elrs-receiver",
  "betafpv-elrs-nano-receiver",
  "tbs-crossfire-nano-rx",
  "spektrum-ar620-receiver"
 ],
 "fits": [],
 "dimensions": "exact (nominal, no printing tolerance)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no printing tolerance. Where a part meets another part, the object lists its mating features (feature, exact size, what it mates with, fit class: press, slide, run, socket, clamp or designed). Apply your process's allowance to those features only; 'designed' gaps are part of the design and stay as drawn.",
 "mating": [],
 "faq": [
  {
   "q": "How big is the Spektrum AR631?",
   "a": "39 × 24 × 14 mm, 8 g, with 230 mm antennas."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "spektrum-ar631-receiver-envelope",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/spektrum-ar631-receiver/spektrum-ar631-receiver-envelope.step",
   "stl": "https://xemstudio.com/files/hardware/spektrum-ar631-receiver/spektrum-ar631-receiver-envelope.stl",
   "note": "Envelope 39 × 24 × 14 mm (Receiver case L × W × H, antennas and pins excluded)"
  }
 ],
 "markdown": "https://xemstudio.com/objects/spektrum-ar631-receiver/index.md"
}