Editing SMK Alps mount lock

{{Infobox dswitch
| image name        = SMK Alps mount lock (AKB II) -- top.jpg
| manufacturer      = [[SMK]]
| switch type       = [[Alternate action]]
| contact mechanism = [[Metal leaf]]
| product code      = 
| family            = [[SMK second generation]]
| keycap mount      = [[Alps mount]]
| switch mount      = [[Plate mount]]
| lifetime          = 
| force graph       = 
| peak force        = 
| introduced        = 
| travel            = 3.5 mm
}}

'''SMK Alps mount lock''' is the [[alternate action]] switch in the SMK second generation series.

==Description==
The operation is very similar to that of [[SMK lock]], where a swivelling pin follows a track. Where the J-M0404 series version used an external module to house the pin and a track on the slider, the second generation design reverses this: the track is in a separate block, and the pin fits into the slider. The position of the track block inside the switch explains why the left-hand retention clip is offset to the back of the switch.

The pressure spring that supports the follower pin is small, at 4 mm long and 1.38 mm in diameter; this is larger than the equivalent spring in [[RAFI full-travel key switch]], which in RS 74 M is a mere 2.7 mm long.

==Keyboards==
*Some [[Apple Keyboard II]]
*Some [[Apple Desktop Bus Keyboard]]

==Gallery==
<gallery widths=250 heights=187>
File:SMK Alps mount lock (AKB II) -- top.jpg                      | Top; the mini PCB from the Keyboard II is still attached
File:SMK Alps mount lock (AKB II) -- opened.jpg                   | Opened
File:SMK Alps mount lock (AKB II) -- contacts.jpg                 | Switch contacts; note that they are inverted as this switch needed repair
File:SMK Alps mount lock (AKB II) -- follower pin 1.jpg           | Follower pin, released
File:SMK Alps mount lock (AKB II) -- follower pin 2.jpg           | Follower pin, pressed in
File:SMK Alps mount lock (AKB II) -- follower pin removal.jpg     | Follower pin removed from the slider
File:SMK Alps mount lock (AKB II) -- latch track block.jpg        | Latch track block
File:SMK Alps mount lock (AKB II) -- pressure spring length.jpg   | Pressure spring length
File:SMK Alps mount lock (AKB II) -- pressure spring diameter.jpg | Pressure spring diameter
File:SMK Alps mount lock (AKB II) -- components.jpg               | Switch components
</gallery>

[[Category:SMK switches]]
[[Category:Keyboard switches with Alps mount]]
[[Category:Alternate action switches]]
[[Category:Metal contact switches]]
[[Category:List of all keyboard switches]]