Mitsumi KPQ Type
|Family||Mitsumi hybrid switch|
|Switch type||Tactile; linear (illuminated only)|
10 M (4 mm)|
5 M (3 mm)
|Bounce time||5 ms|
|Tactile force||50±20 g|
|Actuation force||ca. 30 g|
|Keycap mount||Mitsumi mount|
KPQ Type keyboards use a conductive rubber foot to bridge traces on a single membrane sheet. A buckling rubber sleeve is placed under the keycap to provide tactility and return the key.
Where an integrated LED is required, the switch in question will be linear: the rubber sleeve would obstruct the LED. This can be seen in the Commodore Amiga 2000 keyboard, although that is KKQ Type.
Alternate action is provided by the Mitsumi membrane lock semi-discrete switch module.
- All KPQ keyboards including:
- Some Apple Keyboard II
- Some Commodore Amiga keyboards
- IBM 5576-B01
- NeXT ADB
- Xtra Business Systems 401386-001
Apple Keyboard II
The Keyboard II has a dedicated slider guide plate, rather than using the top case to mount the sliders.
- Imgur — Xtra Business Systems - 401386-001 - Mitsumi KPQ Uploaded 2023-01-25.