Bsun Roselle Linear Switches

This linear switch is designed for users who prefer a smooth, consistent keystroke with moderate resistance. It suits typists and gamers looking for a balance between light actuation and a noticeable bottom-out force. The switch’s unique stem material and factory lubrication aim to reduce friction and noise, offering a quieter typing experience compared to standard linear switches.

Feel & Sound

• Provides a smooth keystroke without tactile bumps or clicks, supporting fast and uninterrupted key presses.
• Moderate bottom-out force offers a defined end-point, which can help prevent accidental key presses during rapid typing or gaming.
• Factory lubrication reduces scratchiness, contributing to a quieter and softer sound profile.

Actuation Characteristics

• Actuation force is moderate, requiring 45g to register a key press, which balances responsiveness and fatigue.
• Pre-travel of 2mm allows for early input recognition, beneficial for quick reactions.
• Total travel of 3.6mm provides a standard key depth, suitable for most typing and gaming styles.

Build Quality

• Top and bottom housings are made from POM, a low-friction plastic that enhances smoothness and durability.
• The stem uses Y3, a new material designed to reduce friction and wear, though its long-term durability is unknown.
• Comes factory lubed with a method tailored to the Y3 stem, which may reduce the need for immediate re-lubing.

Compatibility

• Uses a 5-pin mount, compatible with most standard PCBs and plate-mounted keyboards.
• Unknown compatibility with LED lighting effects due to lack of vendor information.

Trade-offs

• The new Y3 stem material may have unknown long-term reliability compared to traditional plastics.
• Factory lube quality is specific to this switch, so additional lubing might require care to avoid over-lubing.
• Unknown if the switch requires a break-in period or exhibits stem wobble, which can affect feel and sound initially.