OBSF-30-B

1. Overview

The OBSF-30-B is the blue color variant of Sanwa Denshi's flagship 30mm snap-in arcade button, one of the most widely deployed arcade buttons in the world. It uses an identical body, SW-68 microswitch, and snap-in clip mechanism to every other OBSF-30 color — the "-B" suffix denotes the blue plunger and rim only. The OBSF-30 line is OEM-standard in Vewlix and Blast City cabinets, and is factory-installed in Qanba, Hori, and MadCatz (Mad Catz SF4 TE) fightsticks. Sanwa Denshi manufactures the OBSF-30 in Japan; the company also offers the Marine Blue (OBSF-30-MB), Dark Blue (OBSF-30-DB), and Light Blue with Black Bezel (OBSF-30-K/B) as distinct blue-family variants, all mechanically identical to the standard blue.

2. User Sentiment

Blue is consistently described as one of the most popular OBSF-30 colors for player-2 assignments, PlayStation-themed sticks (cross/square/triangle/circle color schemes), and accent buttons in custom arcade builds. The base OBSF-30 is praised across the FGC as the "gold standard for competitive play" — reviewers note "feather touch, great response — they just feel amazing" (Focus Attack, 5-star average). The main community criticisms are color-neutral: some QC variance in feel ("some with a degree of extra tightness in the push" per Reddit r/fightsticks), occasional reports of defective batches from specific importers, and the extremely short 0.85mm actuation distance causing accidental presses for players transitioning from stiffer American-style buttons. Compared to Seimitsu PS-14 series, the OBSF-30 is considered softer, quieter (non-clicking), and more sensitive — the standard for Street Fighter/Tekken play styles.

3. Real-World Applications

The OBSF-30 (all colors) is the default action button in Japanese arcade cabinets (Blast City, Versus City, Vewlix), commercial fightsticks from Hori and Qanba, and MAME/home arcade cabinet builds. The blue variant specifically appears in PlayStation-controller-themed sticks (blue = Cross button), player-2 color-coding in multi-player setups, and decorative/themed custom builds. It also features in leverless (all-button) controllers such as the FightBox F-PRO, RAC-J800B, and similar GP2040-CE devices where OBSF-30 buttons replace joystick directions. DIY users also adapt them for MIDI controllers and non-gaming projects.

4. Technical Specifications

• Type: 30mm snap-in momentary pushbutton (SPST, normally open)
• Switch: SW-68 (non-clicking microswitch, included)
• Actuation force (operating): 55–65g; release force ~27g; total travel force ~81g
• Actuation position: 0.85mm (extremely short throw)
• Total travel: 2.53mm
• Mechanical life: 1,000,000 cycles (SW-68 rated at 5VDC / 10mA)
• Rated electrical: DC 12V, 100mA
• Plunger cap diameter: φ25mm; mounting hole: φ30±0.1mm
• Panel thickness range: 2–4mm (some sources cite up to 5mm)
• Terminals: 2.8mm / 0.110" quick-disconnect (faston) spade connectors
• Body material: ABS plastic
• Temperature range: −20°C to +60°C (SW-68); 0–40°C (operating)
• Contact resistance: ≤50mΩ; insulation resistance ≥50MΩ at DC250V
• Color (this variant): Blue plunger and rim (part suffix -B)
• Origin: Made in Japan

5. Ordering & Compatibility

Retail pricing ranges from ~$1.65 (Arcade Spare Parts, arcadespareparts.com) to $2.75–$3.25 (Arcade Renovations, Focus Attack, Paradise Arcade Shop, Arcade Shock) in the US, ~€2.63 in Europe (Arcade Express), and ¥252–¥274 in Japan (Sengoku, Marutsu). The blue 8-pack ships from Amazon.com (ASIN B003KSDF5Q, B0711G7V91). Blue is periodically sold out at Focus Attack but widely available across the global retailer network. Compatible with any 30mm panel cutout and any fightstick using standard .110" connectors — specifically confirmed for MadCatz TE, Qanba, Hori RAP/VLX/Fighting Edge, Mayflash F300/F500/F700, and MAME/Arcade1Up cabinet mods. The SW-68 switch can be individually replaced (sold separately at ~¥132 in Japan). A silencer foam washer add-on (+$0.10) is available at Focus Attack.

6. Known Issues

The OBSF-30 family (all colors equally) has reported minor QC variance — occasional tightness difference between buttons in the same batch, rare defective units from grey-market importers. The extremely light actuation (0.85mm) requires an adjustment period for users coming from stiffer buttons and can cause accidental inputs. Snap-in locking tabs can break if installation force is excessive (Canadian Joysticks warning); broken tabs void warranty. Cleaning must use neutral detergent only — high-concentration alcohol or solvents damage the ABS resin housing.