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Alps KFL series


KFL is a compact, PCB-mount keyboard switch series from Alps. The earliest mention of it is from advertisements placed in magazines in 1983, including Electronic Engineers Master 83–84. Here, it is advertised as “Series KFL Low Profile Keyboards”, which covers both the switches and completed keyboards (prior to Alps putting keyboards into separate series).

The legs protrude out from the sides of the switch, entering the shell high up. This strange design characteristic may be intended to prevent fouling of the switch contacts by the ingress of solder, flux or cleaning fluids during the wave soldering process, without the need to apply terminal sealant (as was used with KCC, KCM and KCL series in some cases).

Previous research posted to the Deskthority wiki under Alps SKFL series is not included here. This page contains only new notes.


Although Technology Transplant obtained some of these switches under the name “SKFL”, no SKFL part numbers have been found. The only part numbers to date come from Roland service literature, and cover just the standard momentary switches (non-illuminated, and illuminated with a red LED).

Type KFL model SKFL model Colour
Momentary, standard weight KFL10903 Pale grey
Momentary, standard weight, red LED KFL11904
Momentary, heavy weight Pale cyan
Alternate action Pale yellow
Compact Pale grey
Dummy Dark green