OBSF-30-SR

1. Overview

The Sanwa Denshi OBSF-30 is the standard 30mm snap-in arcade pushbutton manufactured in Japan, used as the primary action button in Japanese arcade cabinets and consumer fightsticks worldwide. It belongs to Sanwa's OBSF series (solid-color snap-in buttons), alongside the smaller OBSF-24 (24mm) sibling. The OBSF-30 is widely regarded as the benchmark for arcade button quality, featuring a built-in SW-68 non-clicking microswitch and a convex plunger profile. The "-SR" suffix appended to product ID 307 does not correspond to any verified Sanwa Denshi color code or variant; it is UNVERIFIED and likely a catalog error or internal placeholder.

2. User Sentiment

The OBSF-30 is consistently praised across the arcade and fighting-game community for its light actuation, near-silent operation, and fast reset. It is described as "smooth, responsive and quiet" with a "fast reactive time" that makes it preferred for competitive play, particularly in fighting games like Street Fighter and Mortal Kombat. Its 0.85mm operating position and 55g operating force are frequently cited as superior to American-style buttons. No complaints about the button's core mechanics appear in available sources; the only friction points are color availability and price compared to Chinese clone buttons.

3. Real-World Applications

The OBSF-30 is the standard action button installed in Japanese arcade cabinets (JAMMA-standard panels) and is factory-fitted in major consumer fightstick brands including MadCatz FightSticks, Qanba fightsticks, and Hori fightsticks. It is the go-to replacement and modding button for fighting-game players upgrading their arcade sticks. It is also widely used in home MAME cabinet builds and custom fight panels.

4. Technical Specifications

• Type: 30mm snap-in arcade pushbutton, solid color, convex plunger
• Series: Sanwa OBSF (solid color snap-in); sibling series include OBSC (translucent), OBSJ (metallic), OBSFE (silent), OBSN (screw-in)
• Mounting hole diameter: 30mm
• Overall / flange diameter: 33mm
• Panel thickness range: 2–5mm (2–4mm per some sources, with 2mm minimum and 4–5mm practical maximum for snap clips)
• Built-in switch: SW-68 non-clicking microswitch
• Operating position (OP): 0.85mm
• Total travel position (TTP): 2.53mm
• Operating force (OF): 55g
• Total travel force (TTF): 81g
• Terminal type: 2.8mm / .110" Faston quick-connect spade terminals
• Electrical rating: DC 12V / 100mA
• Insulation resistance: DC 250V / 50MΩ between terminals
• Withstanding voltage: AC 250V / 1 min between terminals
• Operating temperature: −20°C to +60°C
• Service life: 1,000,000 cycles (at 5VDC, 10mA)
• Weight: 10g
• Origin: Japan
• Color suffix — SR: UNVERIFIED. Confirmed real Sanwa color suffixes for OBSF-30 include: -K (Black), -W (White), -R (Red), -B (Light Blue), -DB (Dark Blue), -MB (Royal Blue/Marine Blue), -G (Green), -O (Orange), -P (Pink), -VI (Violet), -Y (Yellow), -GV (Grey Violet, Arcade Shock exclusive), plus two-tone -K-[color] variants. "SR" does not appear in any authoritative retailer catalog.

5. Ordering & Compatibility

The OBSF-30 is available individually from all major arcade parts retailers: Paradise Arcade Shop (~$3.25), Arcade Shock (~$2.85), Focus Attack, Arcade Express (EU), Arcade Renovations, Arcade Parts UK. It is direct-compatible with all standard 30mm arcade panel cutouts and drop-in replacement in MadCatz, Qanba, and Hori fightsticks. The SW-68 microswitch is replaceable and sold separately. The screw-in equivalent for thicker panels is the OBSN-30; translucent variants are the OBSC-30 series. No OBSF-30-SR part number has been located at any authorized Sanwa distributor or major arcade retailer.

6. Known Issues

No mechanical or reliability issues are reported for the OBSF-30 in available sources; the 1-million-cycle SW-68 microswitch is widely considered robust. Data quality flag: The part number OBSF-30-SR is not a recognized Sanwa Denshi color code. The "-SR" suffix does not match any confirmed suffix in the complete Sanwa OBSF-30 color range across six authoritative retailers (Arcade Renovations, Arcade Shock, Paradise Arcade Shop, Focus Attack, Arcade Express, SinoArcade). This part number should be flagged for catalog reconciliation — it is likely a fabricated or corrupted variant code applied to what is generically an OBSF-30.