OBSF-30
ActiveOBSF-30 Snap-in Arcade Button (30mm)
The industry-standard 30mm snap-in arcade push button from Sanwa Denshi. Used in virtually all Japanese arcade cabinets and tournament-grade fightsticks. Features a built-in microswitch with extremely light actuation for rapid-fire inputs.
Common Applications
The OBSF-30 is the default button in Vewlix and Blast City cabinets, Qanba and Hori fightsticks, and most custom arcade builds. Available in a wide range of colors. Snaps into a 30mm panel hole with no tools required.
Specifications
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Actuation Force
The force needed to press the button. Lower = more sensitive. Sanwa ~65g (light), Seimitsu ~85g (medium), Happ ~130g (heavy).
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65g
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Color
Button/actuator color. Green = start/go, Red = stop/emergency, Yellow = caution, Blue = reset (per IEC 60204-1).
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Various (White, Black, Red, Blue, Yellow, Green, etc.)
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Contact Configuration
Normally Open — circuit is off until you press. Standard for start/go/enable functions.
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NO (normally open)
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Diameter
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30mm
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Material
The bezel/body material. Metal bezels are more durable in harsh environments. Plastic is lighter and cheaper.
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ABS plastic
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Mechanical Life
How many press cycles before mechanical failure. Higher is better — 10M cycles at 100 presses/day = 274 years.
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5,000,000 cycles
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Microswitch Type
The internal switch mechanism. Built-in = sealed unit. Cherry D44X = replaceable, clicky. Omron = quieter, longer life.
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built-in
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Mounting Type
How the button attaches to the panel. Panel mount is standard — installs through a cutout from the front.
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snap-in
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Max Operating Temp
Highest temperature the button is rated to operate in.
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40°C
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Min Operating Temp
Lowest temperature the button is rated to operate in.
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0°C
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Panel thickness
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1-5mm
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Travel Distance
How far the button moves when pressed. Shorter = faster response. Sanwa 0.85mm is extremely short for competitive gaming.
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0.85mm
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Compatible Alternatives
These products are functionally equivalent cross-references from other manufacturers.
Installation Quick Reference
Mounting: Snap-in buttons push into a 30mm hole from the top of the panel. Screw-in buttons thread from below and secure with a nut. Use 2-3mm acrylic, wood, or metal panel.
Wiring: Connect the microswitch terminals to your encoder or PCB. Common ground shared across all buttons. Quick-disconnect (0.110") terminals are standard on Japanese buttons.
Dimensions
Wiring Diagram
Troubleshooting
Not responding to input
Check wiring continuity with a multimeter. Verify the contact block is properly seated. Inspect terminals for loose connections.
Where to Buy
Quick Specs
- Actuation Force
- 65g
- Color
- Various (White, Black, Red, Blue, Yellow, Green, etc.)
- Contact Configuration
- NO (normally open)
- Diameter
- 30mm
- Material
- ABS plastic
What People Are Saying
“Sanwa OBSF-30 for speed and sensitivity. The 0.85mm travel is insane — you barely touch them and they activate. Seimitsu if you want a bit more resistance so you dont accidentally press during neutral.”