# PCB relays: Songle/SANYOU SRD, Omron G5V, G2RL, G6K, Finder 40, Schrack RT > What are the dimensions of the SRD-05VDC-SL-C relay? - Category: Electronics › Relays - Kind: Standard part - Basis: KiCad 3D models drawn from manufacturer datasheets (SANYOU SRD = the common Songle SRD-xxVDC blue relay) - Page: https://xemstudio.com/objects/relays-tht/ · JSON: https://xemstudio.com/api/geometry?object=relays-tht · Plain text: https://xemstudio.com/objects/relays-tht/sheet.txt - License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses ## 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. ## Sizes | part | bbox_l_mm | bbox_w_mm | bbox_h_mm | |---|---|---|---| | dpdt-finder-40.52 | 30.3 | 29.0 | 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 | 10.0 | 8.4 | 6.5 | | dpdt-schrack-rt2-formc-rm5mm | 29.0 | 21.0 | 12.7 | | spdt-finder-40.31 | 30.3 | 29.0 | 12.4 | | spdt-hjr-4102 | 15.7 | 15.0 | 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 | 19.0 | 15.4 | | spdt-schrack-rt1-formc-rm5mm | 29.0 | 21.0 | 12.7 | | spst-sanyou-srd-series-form-a | 19.6 | 19.0 | 15.4 | | spst-sanyou-srd-series-form-b | 19.6 | 19.0 | 15.4 | ## Where the files are - KiCad: [kicad-packages3D library (origin of these files)](https://gitlab.com/kicad/libraries/kicad-packages3D) — STEP, WRL — CC BY-SA 4.0 with KiCad exception ## Free STEP/STL (14 parts, CC BY-SA 4.0 (KiCad library license, with the KiCad exception), KiCad library contributors) Index: https://xemstudio.com/files/kicad/relays-tht/index.json · license: https://xemstudio.com/files/kicad/relays-tht/LICENSE.md - dpdt-finder-40.52: [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) — KiCad Relay_THT: Relay_DPDT_Finder_40.52; bbox 30.3 × 29.0 × 12.4 mm - dpdt-omron-g2rl: [STEP](https://xemstudio.com/files/kicad/relays-tht/dpdt-omron-g2rl.step) · [STL](https://xemstudio.com/files/kicad/relays-tht/dpdt-omron-g2rl.stl) — KiCad Relay_THT: Relay_DPDT_Omron_G2RL; bbox 28.8 × 19.2 × 12.5 mm - dpdt-omron-g5v-2: [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) — KiCad Relay_THT: Relay_DPDT_Omron_G5V-2; bbox 20.3 × 14.5 × 9.9 mm - dpdt-omron-g6k-2p: [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) — KiCad Relay_THT: Relay_DPDT_Omron_G6K-2P; bbox 10.0 × 8.4 × 6.5 mm - dpdt-schrack-rt2-formc-rm5mm: [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) — KiCad Relay_THT: Relay_DPDT_Schrack-RT2-FormC_RM5mm; bbox 29.0 × 21.0 × 12.7 mm - spdt-finder-40.31: [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) — KiCad Relay_THT: Relay_SPDT_Finder_40.31; bbox 30.3 × 29.0 × 12.4 mm - spdt-hjr-4102: [STEP](https://xemstudio.com/files/kicad/relays-tht/spdt-hjr-4102.step) · [STL](https://xemstudio.com/files/kicad/relays-tht/spdt-hjr-4102.stl) — KiCad Relay_THT: Relay_SPDT_HJR-4102; bbox 15.7 × 15.0 × 10.4 mm - spdt-omron-g5v-1: [STEP](https://xemstudio.com/files/kicad/relays-tht/spdt-omron-g5v-1.step) · [STL](https://xemstudio.com/files/kicad/relays-tht/spdt-omron-g5v-1.stl) — KiCad Relay_THT: Relay_SPDT_Omron_G5V-1; bbox 13.4 × 12.3 × 7.3 mm - spdt-omron-g6e: [STEP](https://xemstudio.com/files/kicad/relays-tht/spdt-omron-g6e.step) · [STL](https://xemstudio.com/files/kicad/relays-tht/spdt-omron-g6e.stl) — KiCad Relay_THT: Relay_SPDT_Omron_G6E; bbox 15.9 × 11.3 × 9.9 mm - spdt-panasonic-jw1-formc: [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) — KiCad Relay_THT: Relay_SPDT_Panasonic_JW1_FormC; bbox 28.6 × 23.1 × 12.8 mm - spdt-sanyou-srd-series-form-c: [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) — KiCad Relay_THT: Relay_SPDT_SANYOU_SRD_Series_Form_C; bbox 19.6 × 19.0 × 15.4 mm - spdt-schrack-rt1-formc-rm5mm: [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) — KiCad Relay_THT: Relay_SPDT_Schrack-RT1-FormC_RM5mm; bbox 29.0 × 21.0 × 12.7 mm - spst-sanyou-srd-series-form-a: [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) — KiCad Relay_THT: Relay_SPST_SANYOU_SRD_Series_Form_A; bbox 19.6 × 19.0 × 15.4 mm - spst-sanyou-srd-series-form-b: [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) — KiCad Relay_THT: Relay_SPST_SANYOU_SRD_Series_Form_B; bbox 19.6 × 19.0 × 15.4 mm ## Questions **What size is the Songle SRD-05VDC relay?** 19.0 × 15.5 × 15.3 mm, the blue relay on every Arduino relay module; 5 pins; SANYOU SRD is the same footprint. **What is the smallest common PCB relay?** 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). **What is the Omron G2RL footprint?** 29 × 12.7 × 15.7 mm, 5 mm pin pitch across the coil end, 12 A/16 A versions share the footprint. ## Fits with - [Screw terminal blocks: Phoenix MKDS 1,5 and MKDS 3 (5.0 / 5.08 mm), 2–6 positions](https://xemstudio.com/objects/terminal-blocks/) - [Panel cutouts: IEC inlet, rockers, barrel jack, USB-C, HDMI, LEDs, Neutrik D](https://xemstudio.com/objects/panel-cutouts/) - [DIN rail, 35 mm (TS35 × 7.5, EN 60715)](https://xemstudio.com/objects/din-rail-35mm/) - [2.54 mm pin headers, 1×2 to 2×20, vertical and right-angle](https://xemstudio.com/objects/pin-headers-2.54mm/)