Kailh Box Jellyfish Y Linear Switches

This linear switch suits users who want a smooth, consistent keystroke with moderate resistance. It fits typists and gamers preferring a straightforward, non-tactile feel without added noise reduction. Its clear housing supports lighting effects, making it suitable for keyboards with RGB or light pipe setups.

Feel & Sound

The switch provides a linear, smooth keystroke without tactile bumps or clicks. It produces a standard mechanical sound without silent dampening, so it is not ideal for noise-sensitive environments. The bottom-out feel is firm due to the 50g actuation force, offering clear feedback without harshness.

Actuation Characteristics

With a 1.8mm actuation point and 3.6mm total travel, the switch responds quickly while allowing full key travel for comfortable typing. The moderate 50g force balances resistance and ease of pressing, suitable for users who want neither too light nor too heavy keys.

Build Quality

The switch features a polycarbonate top and bottom housing, which provides durability and transparency for lighting. The stem is made of nylon, contributing to smooth movement. An 18mm stainless steel spring ensures consistent force and longevity over up to 100 million keystrokes.

Compatibility

This is a PCB mount switch with five pins, compatible with most standard mechanical keyboard PCBs. It supports light pipe designs for LED backlighting but does not have hot-swap compatibility by itself, requiring soldering for installation.

Modification Potential

The switch comes factory lubed, which reduces initial scratchiness and noise. Additional lubing or filming (adding a thin layer between housing parts to reduce wobble) may further improve smoothness and stability, though results can vary.

Trade-offs

It lacks silent or tactile variants, so it may be less suitable for quiet office settings or users wanting tactile feedback. The clear housing can show dust or debris more easily. Spring ping or stem wobble are unknown but possible, as with many linear switches.