Keycap: The keycap isn’t part of the mechanical switch but it is partially responsible for the noise Stem: The shape of the stem varies the actuation and travel distance of the switch. It creates the keystroke feel and determines the switch type. Coil Spring: Its resistance determines the amount of pressure needed to actuate the key. It also guides the switch to slide back to its position. Upper housing:This part protects and guides the stem. It is also the part that the keycap hits when you press it. Base housing: This is where the upper housing is mounted. This is the piece that attaches and clips to the PCB. |
Linear: These switches have a smooth keypress with no bump when you press them. These switches are usually quite silent and fast. |
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Tactile: These switches have a light bump when you press them, giving you a light feedback while you type. They are also silent. |
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Clicky: These switches emit a very distinctive (and loud) noise when they are pressed. They also give a tactile response. |
- Operation Force: The force needed to activate the switch is usually measured in grams of pressure or centinewton (cN). You can consider pressure less or equal to 50 cN as light, and the rest as medium or high.
- Activation Point: It is the point where a keypress is recognized by the keyboard. This is measured in millimeters. It is also known as Actuation Point or Operating Position.
- Total Travel Distance: It’s the distance your keycap travels until it hits the upper housing of the switch. It’s basically the distance until you bottom out. This is also measured in millimeters.
- Tactile Position: Tactile position is where you feel the bump on tactile and clicky switches. On linear switches, there’s no tactile position.
- Reset Point: Reset position is the distance at which the key is deactivated when released.