Keycap Profiles Demystified: Cherry vs SA vs MT3
Understand how keycap height, finger scooping, row sculpting, and polymer composition (PBT vs ABS) dictate typing endurance and acoustic resonance.
Cherry Profile
Height: Short (9.4mm max)
Sculpt: Row-Sculpted
The gold standard for enthusiast typing. Comfortable angled rows reduce finger travel effort while delivering a snappy, localized acoustic pop.
SA Profile
Height: Tall (16.5mm max)
Sculpt: Spherical Sculpted
Modeled after vintage terminal keyboards like the IBM beam spring. High internal chamber volume yields a signature deep thock resonance.
MT3 Profile
Height: Medium-High (13mm)
Sculpt: Deep Spherical
Designed by Matt3o to cup finger pads securely. Combines vintage aesthetics with modernized ergonomic row curvature.
OEM Profile
Height: Medium (11.9mm)
Sculpt: Cylindrical
Standard profile found on most pre-built mechanical gaming keyboards. Higher step transition compared to Cherry profile.
PBT vs. ABS Plastics: Sound & Texture Dynamics
Polybutylene Terephthalate (PBT) features a textured matte surface, higher density, and resistance to finger oil shine over time. Its extra mass produces a deeper sound frequency upon stroke termination. Acrylonitrile Butadiene Styrene (ABS) offers sharper legend clarity and vibrant color saturation, accompanied by a crisp higher-frequency acoustic feedback.