Alps SKCC Lock
Manufacturer	Alps Electric
Family	Alps SKCC series
Part Number	KCC139211)
Switch Type	Alternate action
Travel	3.5mm
Sense method	Metal contact
Mount	Plate mount
Rated lifetime	Unknown
Quoted operating force	unknown, likely 200gf2)

Alps SKCC Lock is an alternate action switch in the Alps SKCC Series.

SKCC Lock is a particularly interesting switch due to both its similarities with SKCL Lock yet completely different methods of achieving the same. The upper and lower housing used appear to be the same molds as in LED variants of standard series SKCC switches, except in the lower housing the spring post is omitted.

The wider space on the side where the spring would usually sit is used to house a metal follower arm on what looks like a small piece of raw pcb substrate, which moves around a track in the stem similar to Alps SKCL Lock. As a result of the use of this space, return force has to be provided externally. A small hole through the slider allows the external return spring to be locked into the slider, which eliminates the possibility of flyaway springs when removing a keycap.

Alps SKCC Lock, like all SKCC series switches, uses a contact module to register the keypress. This sits in the housing on the side opposite the follower arm insert.

The switch was likely in production from 1979 alongside the rest of the SKCC series. No end date is known.