HMX SW x Pearl Linear Switches

The HMX SW Pearl Linear is a smooth, light linear switch suited for users who prefer a consistent keystroke without tactile bumps or clicks. It fits well for gamers or typists seeking quick, low-resistance key presses with a moderate travel distance. Its design supports PCB mounting and features a stable stem, making it compatible with many custom keyboard builds.

Feel & Sound

This switch offers a linear feel, meaning the force required to press the key remains steady from start to bottom out. The actuation is light at 45g, which helps reduce finger fatigue during long sessions. The sound profile is expected to be quiet and smooth, with no tactile feedback or audible click. The polycarbonate top housing and POM stem may contribute to a softer bottom-out sound compared to harder plastics.

Actuation Characteristics

The switch actuates at 1.9mm with a total travel of 3.5mm, providing a balance between responsiveness and key travel distance. The bottom-out force is slightly higher at 50g, offering a subtle resistance near the end of the press that can help avoid accidental key presses. This force curve suits users who want a light initial press but some feedback when fully pressed.

Build Quality

It uses a POM stem known for smooth sliding, paired with a polycarbonate top housing and a PA66 (nylon) bottom housing, materials that generally enhance durability and reduce friction. The 22mm spring is standard length, contributing to consistent force delivery. The switch has five pins for secure PCB mounting, improving stability during use.

Compatibility & Modifications

The PCB mount design ensures compatibility with most custom mechanical keyboards that support 5-pin switches. Unknown if it supports hot-swap sockets or LED compatibility. Factory lubrication quality is unknown, but the POM stem and housing materials suggest it may respond well to additional lubing or filming, which can reduce stem wobble and smooth out the keystroke further.

Trade-offs

Linear switches like this lack tactile feedback, which may be less ideal for users who prefer a noticeable actuation point. Unknown if the switch has any spring ping or stem wobble out of the box. The purple housing color may not suit all aesthetic preferences. Break-in period is unknown but typical for POM stems.