{
 "version": "2026-10-20",
 "license": "Dimension sheets are written by Xem Studio from the cited sources and are free to use (CC BY 4.0, attribute 'Xem Studio'). Linked files belong to their publishers under the license shown; Xem Studio does not host them. 'license_verified: false' means the license shown is from memory or the publisher's page as last read and should be confirmed at the link before commercial use.",
 "slug": "relays-tht",
 "name": "PCB relays: Songle/SANYOU SRD, Omron G5V, G2RL, G6K, Finder 40, Schrack RT",
 "kind": "standard",
 "category": "Electronics",
 "group": "Relays",
 "year": null,
 "question": "What are the dimensions of the SRD-05VDC-SL-C relay?",
 "tags": [
  "relay",
  "pcb",
  "srd",
  "mains"
 ],
 "aliases": [
  "srd-05vdc relay dimensions",
  "songle relay",
  "5v relay size",
  "omron g5v",
  "g2rl",
  "finder 40.52",
  "pcb relay size"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 14,
 "url": "https://xemstudio.com/objects/relays-tht/",
 "sheet_txt": "https://xemstudio.com/objects/relays-tht/sheet.txt",
 "sheet": {
  "basis": "KiCad 3D models drawn from manufacturer datasheets (SANYOU SRD = the common Songle SRD-xxVDC blue relay)",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "SRD-05VDC-SL-C (the Arduino module relay): 19.0 × 15.5 × 15.3 mm, 5 pins, 10 A contacts. Pin pattern: coil pins 6.0 mm apart on one end, contacts spread 12.0 mm.",
   "Omron G5V-1 (signal, 12.5 × 7.5 × 10 mm) and G5V-2 (DPDT, 20.5 × 10 × 11.5 mm) are the small ones; G2RL (29 × 12.7 × 15.7 mm) and Finder 40.52 (29 × 12.5 × 25 mm) are 8–16 A.",
   "Leave 2 mm around a relay in a printed enclosure; mains relays need creepage: 4 mm from contact pins to any slot."
  ],
  "table": {
   "columns": [
    "part",
    "bbox_l_mm",
    "bbox_w_mm",
    "bbox_h_mm"
   ],
   "rows": [
    [
     "dpdt-finder-40.52",
     30.3,
     29,
     12.4
    ],
    [
     "dpdt-omron-g2rl",
     28.8,
     19.2,
     12.5
    ],
    [
     "dpdt-omron-g5v-2",
     20.3,
     14.5,
     9.9
    ],
    [
     "dpdt-omron-g6k-2p",
     10,
     8.4,
     6.5
    ],
    [
     "dpdt-schrack-rt2-formc-rm5mm",
     29,
     21,
     12.7
    ],
    [
     "spdt-finder-40.31",
     30.3,
     29,
     12.4
    ],
    [
     "spdt-hjr-4102",
     15.7,
     15,
     10.4
    ],
    [
     "spdt-omron-g5v-1",
     13.4,
     12.3,
     7.3
    ],
    [
     "spdt-omron-g6e",
     15.9,
     11.3,
     9.9
    ],
    [
     "spdt-panasonic-jw1-formc",
     28.6,
     23.1,
     12.8
    ],
    [
     "spdt-sanyou-srd-series-form-c",
     19.6,
     19,
     15.4
    ],
    [
     "spdt-schrack-rt1-formc-rm5mm",
     29,
     21,
     12.7
    ],
    [
     "spst-sanyou-srd-series-form-a",
     19.6,
     19,
     15.4
    ],
    [
     "spst-sanyou-srd-series-form-b",
     19.6,
     19,
     15.4
    ]
   ]
  }
 },
 "sheet_text": "PCB relays: Songle/SANYOU SRD, Omron G5V, G2RL, G6K, Finder 40, Schrack RT — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/relays-tht/  (CC BY 4.0)\nBasis: KiCad 3D models drawn from manufacturer datasheets (SANYOU SRD = the common Songle SRD-xxVDC blue relay)\nCatalog version: 2026-10-20\n\nSizes: see table below\n- SRD-05VDC-SL-C (the Arduino module relay): 19.0 × 15.5 × 15.3 mm, 5 pins, 10 A contacts. Pin pattern: coil pins 6.0 mm apart on one end, contacts spread 12.0 mm.\n- Omron G5V-1 (signal, 12.5 × 7.5 × 10 mm) and G5V-2 (DPDT, 20.5 × 10 × 11.5 mm) are the small ones; G2RL (29 × 12.7 × 15.7 mm) and Finder 40.52 (29 × 12.5 × 25 mm) are 8–16 A.\n- Leave 2 mm around a relay in a printed enclosure; mains relays need creepage: 4 mm from contact pins to any slot.\n\npart  bbox_l_mm  bbox_w_mm  bbox_h_mm\ndpdt-finder-40.52  30.3  29.0  12.4\ndpdt-omron-g2rl  28.8  19.2  12.5\ndpdt-omron-g5v-2  20.3  14.5  9.9\ndpdt-omron-g6k-2p  10.0  8.4  6.5\ndpdt-schrack-rt2-formc-rm5mm  29.0  21.0  12.7\nspdt-finder-40.31  30.3  29.0  12.4\nspdt-hjr-4102  15.7  15.0  10.4\nspdt-omron-g5v-1  13.4  12.3  7.3\nspdt-omron-g6e  15.9  11.3  9.9\nspdt-panasonic-jw1-formc  28.6  23.1  12.8\nspdt-sanyou-srd-series-form-c  19.6  19.0  15.4\nspdt-schrack-rt1-formc-rm5mm  29.0  21.0  12.7\nspst-sanyou-srd-series-form-a  19.6  19.0  15.4\nspst-sanyou-srd-series-form-b  19.6  19.0  15.4\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- KiCad: kicad-packages3D library (origin of these files) — STEP, WRL — CC BY-SA 4.0 with KiCad exception — https://gitlab.com/kicad/libraries/kicad-packages3D\n\nFree files (CC BY-SA 4.0 (KiCad library license, with the KiCad exception), KiCad library contributors; STEP + STL, 14 parts): https://xemstudio.com/files/kicad/relays-tht/index.json\nAPI: https://xemstudio.com/api/geometry?object=relays-tht\n",
 "sources": [
  {
   "publisher": "KiCad",
   "title": "kicad-packages3D library (origin of these files)",
   "url": "https://gitlab.com/kicad/libraries/kicad-packages3D",
   "formats": [
    "STEP",
    "WRL"
   ],
   "license": "CC BY-SA 4.0 with KiCad exception",
   "license_verified": true,
   "hosted": true
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "terminal-blocks",
  "panel-cutouts",
  "din-rail-35mm",
  "pin-headers-2.54mm"
 ],
 "faq": [
  {
   "q": "What size is the Songle SRD-05VDC relay?",
   "a": "19.0 × 15.5 × 15.3 mm, the blue relay on every Arduino relay module; 5 pins; SANYOU SRD is the same footprint."
  },
  {
   "q": "What is the smallest common PCB relay?",
   "a": "Omron G5V-1 at 12.5 × 7.5 × 10 mm (1 A signal relay) or the G6K at 10 × 6.5 × 5.2 mm (SMD/THT, 1 A)."
  },
  {
   "q": "What is the Omron G2RL footprint?",
   "a": "29 × 12.7 × 15.7 mm, 5 mm pin pitch across the coil end, 12 A/16 A versions share the footprint."
  }
 ],
 "files_license": {
  "name": "CC BY-SA 4.0 (KiCad library license, with the KiCad exception)",
  "holder": "KiCad library contributors",
  "url": "https://www.kicad.org/libraries/license/",
  "note": "Rehosted unmodified (STL converted from the STEP) with the library's LICENSE.md and CREDITS.md beside the files, as the license requires. Using these models in your own design does not make your design share-alike (KiCad exception)."
 },
 "offers": [
  {
   "file": "dpdt-finder-40.52",
   "formats": [
    "step",
    "stl"
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   "license": "CC BY-SA 4.0 (KiCad library license, with the KiCad exception)",
   "step": "https://xemstudio.com/files/kicad/relays-tht/dpdt-finder-40.52.step",
   "stl": "https://xemstudio.com/files/kicad/relays-tht/dpdt-finder-40.52.stl",
   "note": "KiCad Relay_THT: Relay_DPDT_Finder_40.52; bbox 30.3 × 29.0 × 12.4 mm"
  },
  {
   "file": "dpdt-omron-g2rl",
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    "stl"
   ],
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   "license": "CC BY-SA 4.0 (KiCad library license, with the KiCad exception)",
   "step": "https://xemstudio.com/files/kicad/relays-tht/dpdt-omron-g2rl.step",
   "stl": "https://xemstudio.com/files/kicad/relays-tht/dpdt-omron-g2rl.stl",
   "note": "KiCad Relay_THT: Relay_DPDT_Omron_G2RL; bbox 28.8 × 19.2 × 12.5 mm"
  },
  {
   "file": "dpdt-omron-g5v-2",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY-SA 4.0 (KiCad library license, with the KiCad exception)",
   "step": "https://xemstudio.com/files/kicad/relays-tht/dpdt-omron-g5v-2.step",
   "stl": "https://xemstudio.com/files/kicad/relays-tht/dpdt-omron-g5v-2.stl",
   "note": "KiCad Relay_THT: Relay_DPDT_Omron_G5V-2; bbox 20.3 × 14.5 × 9.9 mm"
  },
  {
   "file": "dpdt-omron-g6k-2p",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY-SA 4.0 (KiCad library license, with the KiCad exception)",
   "step": "https://xemstudio.com/files/kicad/relays-tht/dpdt-omron-g6k-2p.step",
   "stl": "https://xemstudio.com/files/kicad/relays-tht/dpdt-omron-g6k-2p.stl",
   "note": "KiCad Relay_THT: Relay_DPDT_Omron_G6K-2P; bbox 10.0 × 8.4 × 6.5 mm"
  },
  {
   "file": "dpdt-schrack-rt2-formc-rm5mm",
   "formats": [
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    "stl"
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   "price_usd": 0,
   "license": "CC BY-SA 4.0 (KiCad library license, with the KiCad exception)",
   "step": "https://xemstudio.com/files/kicad/relays-tht/dpdt-schrack-rt2-formc-rm5mm.step",
   "stl": "https://xemstudio.com/files/kicad/relays-tht/dpdt-schrack-rt2-formc-rm5mm.stl",
   "note": "KiCad Relay_THT: Relay_DPDT_Schrack-RT2-FormC_RM5mm; bbox 29.0 × 21.0 × 12.7 mm"
  },
  {
   "file": "spdt-finder-40.31",
   "formats": [
    "step",
    "stl"
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   "price_usd": 0,
   "license": "CC BY-SA 4.0 (KiCad library license, with the KiCad exception)",
   "step": "https://xemstudio.com/files/kicad/relays-tht/spdt-finder-40.31.step",
   "stl": "https://xemstudio.com/files/kicad/relays-tht/spdt-finder-40.31.stl",
   "note": "KiCad Relay_THT: Relay_SPDT_Finder_40.31; bbox 30.3 × 29.0 × 12.4 mm"
  },
  {
   "file": "spdt-hjr-4102",
   "formats": [
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   "license": "CC BY-SA 4.0 (KiCad library license, with the KiCad exception)",
   "step": "https://xemstudio.com/files/kicad/relays-tht/spdt-hjr-4102.step",
   "stl": "https://xemstudio.com/files/kicad/relays-tht/spdt-hjr-4102.stl",
   "note": "KiCad Relay_THT: Relay_SPDT_HJR-4102; bbox 15.7 × 15.0 × 10.4 mm"
  },
  {
   "file": "spdt-omron-g5v-1",
   "formats": [
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   "license": "CC BY-SA 4.0 (KiCad library license, with the KiCad exception)",
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   "stl": "https://xemstudio.com/files/kicad/relays-tht/spdt-omron-g5v-1.stl",
   "note": "KiCad Relay_THT: Relay_SPDT_Omron_G5V-1; bbox 13.4 × 12.3 × 7.3 mm"
  },
  {
   "file": "spdt-omron-g6e",
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    "step",
    "stl"
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   "price_usd": 0,
   "license": "CC BY-SA 4.0 (KiCad library license, with the KiCad exception)",
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   "stl": "https://xemstudio.com/files/kicad/relays-tht/spdt-omron-g6e.stl",
   "note": "KiCad Relay_THT: Relay_SPDT_Omron_G6E; bbox 15.9 × 11.3 × 9.9 mm"
  },
  {
   "file": "spdt-panasonic-jw1-formc",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY-SA 4.0 (KiCad library license, with the KiCad exception)",
   "step": "https://xemstudio.com/files/kicad/relays-tht/spdt-panasonic-jw1-formc.step",
   "stl": "https://xemstudio.com/files/kicad/relays-tht/spdt-panasonic-jw1-formc.stl",
   "note": "KiCad Relay_THT: Relay_SPDT_Panasonic_JW1_FormC; bbox 28.6 × 23.1 × 12.8 mm"
  },
  {
   "file": "spdt-sanyou-srd-series-form-c",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY-SA 4.0 (KiCad library license, with the KiCad exception)",
   "step": "https://xemstudio.com/files/kicad/relays-tht/spdt-sanyou-srd-series-form-c.step",
   "stl": "https://xemstudio.com/files/kicad/relays-tht/spdt-sanyou-srd-series-form-c.stl",
   "note": "KiCad Relay_THT: Relay_SPDT_SANYOU_SRD_Series_Form_C; bbox 19.6 × 19.0 × 15.4 mm"
  },
  {
   "file": "spdt-schrack-rt1-formc-rm5mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY-SA 4.0 (KiCad library license, with the KiCad exception)",
   "step": "https://xemstudio.com/files/kicad/relays-tht/spdt-schrack-rt1-formc-rm5mm.step",
   "stl": "https://xemstudio.com/files/kicad/relays-tht/spdt-schrack-rt1-formc-rm5mm.stl",
   "note": "KiCad Relay_THT: Relay_SPDT_Schrack-RT1-FormC_RM5mm; bbox 29.0 × 21.0 × 12.7 mm"
  },
  {
   "file": "spst-sanyou-srd-series-form-a",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY-SA 4.0 (KiCad library license, with the KiCad exception)",
   "step": "https://xemstudio.com/files/kicad/relays-tht/spst-sanyou-srd-series-form-a.step",
   "stl": "https://xemstudio.com/files/kicad/relays-tht/spst-sanyou-srd-series-form-a.stl",
   "note": "KiCad Relay_THT: Relay_SPST_SANYOU_SRD_Series_Form_A; bbox 19.6 × 19.0 × 15.4 mm"
  },
  {
   "file": "spst-sanyou-srd-series-form-b",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY-SA 4.0 (KiCad library license, with the KiCad exception)",
   "step": "https://xemstudio.com/files/kicad/relays-tht/spst-sanyou-srd-series-form-b.step",
   "stl": "https://xemstudio.com/files/kicad/relays-tht/spst-sanyou-srd-series-form-b.stl",
   "note": "KiCad Relay_THT: Relay_SPST_SANYOU_SRD_Series_Form_B; bbox 19.6 × 19.0 × 15.4 mm"
  }
 ],
 "markdown": "https://xemstudio.com/objects/relays-tht/index.md"
}