Bsun Bubble Linear Switches

This linear mechanical switch suits users who want a smooth, consistent keypress with a light actuation force. It fits well for gamers and typists seeking fast, low-effort input without tactile bumps or clicks. The switch supports RGB lighting and is factory lubed for reduced friction out of the box.

Feel & Sound

• Linear design provides a smooth, uninterrupted keystroke without tactile feedback or audible clicks.
• Factory lubrication reduces scratchiness, contributing to a quieter and smoother sound profile.
• Bottoming out is consistent but may feel slightly soft due to the spring and housing materials.

Actuation Characteristics

• Light actuation force of 45g allows for quick key presses with minimal finger fatigue.
• Short pre-travel of 2.0mm supports fast response times, beneficial for gaming or fast typing.
• Total travel distance of 3.6mm provides a standard key travel experience without feeling shallow or overly long.

Build Quality

• Top housing made from LY material and bottom housing from nylon balance durability and sound dampening.
• Stem is LY plastic, contributing to smooth keystrokes and compatibility with MX-style keycaps.
• 21mm spring length supports consistent force delivery and key return.

Compatibility

• PCB mount with 5 pins ensures stable installation on compatible PCBs but is less suited for hot-swap sockets without adapters.
• Notched light pipe enhances RGB backlighting visibility, compatible with SMD LEDs.

Trade-offs

• Linear feel may be less satisfying for users who prefer tactile or clicky feedback.
• Some users might notice minor stem wobble, common in MX-style stems, which can affect typing precision.
• Unknown long-term durability and spring noise characteristics.