Mechanical Keyboard Switches Explained: Linear vs Tactile vs Clicky, Travel, Force, and Hot-Swap Compatibility

A linear switch is designed to move through its stroke without a deliberate tactile bump. A tactile switch adds a noticeable force change around part of the travel, while a clicky switch adds an audible click mechanism as well as tactile feedback. Those categories describe the response mechanism; they do not tell you which switch is universally faster, quieter, more durable, or better for gaming or typing.

Even switches in the same category can feel very different because spring force, force-curve shape, pre-travel, total travel, lubrication, housing geometry, damping, keycap mass, mounting construction, and manufacturing tolerances vary by model. CHERRY’s current MX range illustrates that directly: MX Brown is tactile at 45 cN with 2.0 mm pre-travel and 4.0 mm total travel, MX Blue is tactile/clicky at 60 cN with 2.2 mm pre-travel and 4.0 mm travel, and MX Speed Silver is linear at 45 cN with 1.2 mm pre-travel and 3.4 mm travel. Those are product specifications, not universal values for the categories.

Pre-travel is the distance from the top of the stroke to the specified switching point. Total travel is the full mechanical stroke. Operating or actuation force is the force the manufacturer associates with switching, while some manufacturers also publish initial force, tactile peak force, or final force near the bottom of the stroke. Do not combine those values into one generic “speed” number.

A shorter pre-travel can make a switch trigger earlier in its stroke, but end-to-end input latency also depends on the keyboard electronics, scan behavior, firmware, debounce or sensing method, USB or wireless transport, and the application. Likewise, a higher operating-force number does not by itself describe the complete feel because two switches can have different force curves before and after actuation. Use the exact manufacturer force/travel chart or specification when the distinction matters.

Mechanical contacts must return far enough for the switch and keyboard electronics to register a release before another actuation can occur. The relationship between press and reset points depends on the switch mechanism and keyboard implementation. Do not infer an exact reset distance, hysteresis figure, debounce time, or rapid-repeat advantage from the words linear, tactile, or clicky unless the manufacturer publishes the relevant measurement.

Treat keystroke-life figures as manufacturer durability claims under that vendor’s test method. CHERRY currently lists more than 50 million keystrokes for several MX2A models and more than 100 million for some others such as MX Speed Silver. That does not mean Core Tech Tips independently reproduced those lifetimes, nor does it prove a switch with the larger claim will feel better or last longer in every keyboard and environment.

On a hot-swappable mechanical keyboard, compatible switch contacts plug into sockets mounted on the PCB so the switch can be removed and replaced without desoldering. Keychron, for example, documents current V-series boards whose PCB sockets accept both 3-pin and 5-pin MX mechanical switches. A soldered keyboard is different: its switch pins are soldered to the PCB, so normal replacement requires desoldering and soldering rather than simply pulling the switch out.

The socket family still matters. Kailh documents separate hot-swap socket types for MX-style and Choc-style switches and warns that the socket itself requires a compatible PCB. “Hot-swap” therefore describes the keyboard/socket design, not a universal connector standard that accepts any switch sold for any mechanical keyboard.

A typical MX-style switch uses two electrical contact pins plus a central locating post. Five-pin variants add two plastic locating legs that stabilize the switch in a PCB designed to accept them; many three-pin variants omit those extra plastic legs. A board explicitly documented for both 3-pin and 5-pin MX mechanical switches can normally accept either within the rest of its stated compatibility envelope. A PCB with only the three-pin hole pattern may not physically accept the extra locating legs of a five-pin switch.

Do not reduce compatibility to pin count alone. The switch still needs the correct electrical socket family, plate and PCB geometry, housing clearance, keycap stem interface, and room for the board’s lighting hardware. Check the exact keyboard documentation before modifying plastic locating legs or forcing a switch into a PCB that was not designed for it.

RGB compatibility is partly mechanical and optical. Some MX-style switch housings provide transparent or open areas for PCB-mounted LEDs, while others block or diffuse more light. Keychron documents south-facing RGB on current V-series boards and specifically notes that this orientation avoids interference with OEM- and Cherry-profile alternative keycaps on those keyboards. That is a board-specific design claim, not proof that every south-facing or north-facing combination behaves identically.

A switch that electrically works can therefore produce different lighting, keycap clearance, sound, or travel feel from the original switch. Large stabilized keys also involve stabilizers and surrounding geometry that are separate from the switch footprint. Physical insertion is necessary evidence, but it is not a guarantee of identical RGB behavior, acoustic behavior, keycap clearance, or typing feel.

Do not assume that a familiar cross-shaped keycap stem means the switch is electrically or mechanically interchangeable with a standard full-height MX mechanical switch. Low-profile families can use different switch heights, pin layouts, sockets, stabilizers, and keycap geometry. Kailh explicitly separates MX-compatible and Choc-compatible hot-swap socket families, while Gateron publishes low-profile products with their own travel and pin specifications.

Hall-effect keyboards are a clearer example of a different sensing system. Wooting’s Lekker V2 switches use contactless magnetic sensing, have no conventional metal contact pins, and are documented as being for Hall-effect keyboards rather than standard mechanical keyboards. Optical and other proprietary switch systems likewise need the exact keyboard manufacturer’s compatibility list; do not infer interchangeability merely from switch shape or marketing language.

Use this order: 1) identify the exact keyboard and confirm whether the PCB is hot-swappable or soldered; 2) identify the supported switch family, not just the keycap stem shape; 3) check whether the PCB accepts 3-pin, 5-pin, or both; 4) verify full-height versus low-profile geometry and the plate/PCB footprint; 5) check LED orientation and housing clearance; 6) confirm keycap and stabilizer compatibility; 7) compare the exact switch model’s pre-travel, total travel, operating force, tactile/click mechanism, and vendor lifetime claim; 8) install one switch carefully and verify key input and lighting before replacing an entire board.

If the keyboard or switch documentation does not establish one of those points, treat compatibility as unresolved instead of assuming that “MX-style,” “hot-swap,” or a matching stem automatically makes it safe. Choose switch feel separately from switch fit: a mechanically compatible switch can still have a substantially different force curve, sound, travel, and reset behavior from the one it replaces.