Switch Dimensions and Physical Specifications

Cherry MX

For specifics, please see the full datasheet

Simplified info (Graphics from datasheet):

• PCB thickness: 1.6mm
  Plate thickness: 1.5mm +-0.1mm
  Distance from Plate top to PCB top = 5mm
  

• Keyswitch spacing, typical: 19.05mm (0.75in)
  PCB dimensions as shown
  
• Plate dimensions
  General cutout: 14 x 14 mm
  (Levelling mechanism = Stabilizer)
  

  

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Alps SKCL/SKCM

Recovered partial datasheet from Deskthority Wiki

Simplified info (Graphics from datasheet):

• Plate thickness: 1.2mm
  PCB thickness unspecified (No PCB stabilizers existed)
  

  

• PCB/Plate dimensions
  General plate cutout size: 15.5 x 12.8 mm
  

  

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Omron B3G-S

Datasheet 1 from Deskthority Wiki
Datasheet 2

Simplified info (Graphics from datasheet):

• Plate thickness: 1.2mm
  PCB thickness: 1.6mm
  Standard plate cutout: 13.5 x 13.5 mm