Editing SMK Discrete Dome (section)

==Description==
All observed examples of the clicky variety have a pair of conductive traces on the PCB for each key, above which the switch is clipped into the metal switchplate. The bottom housing of the switch sits flush with the PCB and there is a circular opening in the middle of the bottom housing. Inside the switch there is a rubber dome with a conductive pad on the underside that presses through the opening in the housing and onto the PCB to bridge the traces. Over the dome there is a spring and click jacket and over that there is a slider clipped into the bottom housing.
The tactile version of the switch deviates from the clicky version in that it is situated above a membrane instead of a PCB, it does not have a conductive pad on the underside of the dome and instead has a non-conductive nub that presses on the membrane, and there is no spring between the dome and the slider.<ref name="Sony KI-9700 review (SMK spring-over-dome)"/> There is no functional reason that the clicky and tactile versions use different contact types but no clicky membrane or tactile PCB have presently been identified.

The slider is notably large, covering most of the area of the switch. The switch bears a passing visual resemblance to [[Omron B3K series]] switches, and to a lesser extent, [[Alps SKCP series]].

Like other [[:Category:Spring over dome switches|spring-over-dome]] switches, such as [[Fujitsu Peerless]], the switch is linear until a distinct tactile/actuation event near the bottom.
Unlike the Peerless, however, it is very smooth and wider keys are fully [[Stabiliser|stabilised]]. The switches have been noted to be more tactile, and in the case of the clicky version, louder in a disassembled keyboard.<ref name="youtube-disassembly" />