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Alps KFF Series

Alps KFF
A single desoldered Alps KFF switch
Manufacturer Alps Electric
Part Number(s) KFF#####1)
Switch Type Clicky
Travel 3.5mm
Sense method Metal contact
Mount Plate mount
Rated lifetime Unknown
Quoted operating force Unknown

The Alps KFF Series, sometimes referred to as SKFF2) or Alps vertical plate spring, is a series of keyboard switches made by Alps Electric in the late 1970s-1980s.

Characteristics

Bar Mount Switch

LED Switch

Double Action switches

1)
numbers unknown, but the base switch is likely KFF10901
2)
there is no evidence of the switch existing after the naming scheme change