Alps SKCC series

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Alps SKCC series
Alps SKCC series -- infobox.jpg
Manufacturer Alps Electric
Introduced 1980 or earlier
Switch type Linear
Sense method Metal leaf
Switch mount Plate mount

Alps SKCC series (formerly known as Alps vintage tee mount) is the forerunner of the Alps SKCL/SKCM series, and shares the same switchplate design. The switch uses a tee mount, while keycaps use a cruciform slot. See also the virtually identical General Instrument Series S950.

Description

The switchplate is frequently black, but Alps SKCC Tall Cream has been found with a grey switchplate, possibly due to manufacturing overlap with early Alps SKCL/SKCM series models.

Conventionally, the pins are to the side of the switch instead of the front/back.[1] However, since the keycaps support all four orientations, some keyboards have the switches rotated by 90° with the same pin orientation as SKCL/SKCM,[2] and at least one keyboard used mixed orientations.[3] Mounting holes are 14 mm square.

The cream switches were used in a Radio Shack TRS-80 Model I with ICs dating to early 1979.

Full travel measures between 3.33 and 3.47 mm, based on a selection of cream, green and tall cream switches. This would be consistent with a specification of 3.5−5% mm.

The switch bears the oval Alps logo on the bottom.

Disassembly

The side tabs are much harder to unlatch than SKCL/SKCM series, and noticeably thinner, and consequently face a much greater risk of snapping clean off when trying to lever them open. When opening a switch, it helps to insert a thin object underneath the tab on one side, prior to opening the tab on the other side, to stop the tab on the other side from closing again. The cocktail stick method used with Alps SKCL/SKCM series is not possible with SKCC, as the ledge that rests on the mounting plate overhangs the tabs.

Variants

Name Part
No photograph.svg Alps SKCC Black
No photograph.svg Alps SKCC Grey
Alps SKCC Cream -- variants table.jpg Alps SKCC Cream
Alps SKCC Green -- variants table.jpg Alps SKCC Green SKCCBK
Alps SKCC Tall Cream -- variants table.jpg Alps SKCC Tall Cream SKCCAF
Alps SKCC Lock -- variants table.jpg Alps SKCC Lock
Alps SKCC Cream LED.jpg Alps SKCC Cream LED
Alps SKCC Side-Angled Cream -- variants table.jpg Alps SKCC Side-Angled Cream

Unmapped part numbers

The following part numbers are known to exist (surplus stock no longer available), but no photograph exists of them and they have not been assigned to a moniker above:

  • SKCCAC

References

  1. Mousefan — TOSHIBA PASOPIA700 '85 Retrieved 2015-07-23.
  2. KBTalking — ■鍵盤史的遺跡Apple M0110A (ALPS凸軸)■ Dated 2010-12-03. Retrieved 2015-07-23.
  3. Deskthority — IBM 5954339