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C&K

Contents

Products

K101

C&K K101 was advertised in Computer Design magazine in April 1982. K101 is a momentary type with a 25 million cycle rated lifetime, at 0.4 VA maximum (24 V AC/DC). The advertisement notes that “Applications include keyboard and trigger switch, multiple keyboard installations, and data input.” There is no illustration of the product, and no other record of the existence of such a switch. Whether K101 is a conventional full-travel keyboard switch is not known.

KBD

KBD was a short-lived series of C&K-branded Cherry MX clone switches. KBD was available in the standard black, brown, blue and red types. KBD was announced by Analog IC Tips in May 2015. The last buy time for KBD was the 9th of July 2020, with the last delivery and discontinuation on the 9th of October 2020. Presently, these switches have yet to be discovered in a keyboard.

KBD series was rated for 50 million cycles at 10 mA at 12 V DC.

KBD switches have the C&K logo moulded into the top where a Cherry MX switch would have the Cherry logo.

Only four models were ever listed:

Model Type Colour Force
KBDBKN6AULFT Linear actuation Black 60±20 gf
KBDRDN4AULFT Linear actuation Red 45±20 gf
KBDBUC6AULFT Click pressure point Blue 60±20 gf
KBDBWC5AULFT Click pressure point Brown 55±20 gf

Both the blue and brown types were listed as “Click pressure point” with no indication of one having click feedback and the other tactile-only feedback. The datasheet indicates that the part numbers indicate the colour (BK, RD, BU and BW respectively) rather than the switch type, and the forces are listed in order as N6, N4, C6 and C5.

Documentation

All material was scanned by Bitsavers unless otherwise noted.