Alps SKCM Brown

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Template icon--Illustration.png This article requires additional photographic illustration — full photo sets of both versions
Alps SKCM Brown
Alps SKCM Brown -- infobox.jpg
Manufacturer Alps Electric
Family Alps SKCL/SKCM series
Precedes Alps SKCM Green
Switch type Tactile
Sense method Metal leaf
Keycap mount Alps mount
Switch mount Plate mount

Alps SKCM Brown, or tactile Brown Alps, is a tactile switch in the complicated Alps SKCL/SKCM series.

Tactile Brown Alps is the original tactile switch in the SKCM series. Tactility was introduced by placing a second, modified switchplate actuator leaf onto a dummy block on the opposite side of the switch. This arrangement has been reported to have a superior feel to the later design.[Citation needed] Tactile Brown Alps has also been found with standard tactile leaves.[1]

The feel of tactile Brown Alps has been reported to be similar to the officially documented force curve of Alps SKCM Green switches, which have a tactile leaf of a shape quite close to that of tactile Brown Alps.[2] It is possible therefore that tactile Green is the successor to tactile Brown.

Linear Brown Alps switches also exist; these can be identified by an LED cutout in the upper shell.

Gallery

Early type

Early SKCM Brown switches with a modified actuator leaf for tactile feel.

Keyboards

  • AT&T UNIX PC 3B1 7300 EL1574[3]
  • IBM PC Convertible (IBM 5140)[4]
  • IBM Nursing Station keyboard (IBM 7690)[5]
  • Some Magnavox VideoWriter keyboards (Made in Japan models)
  • Sony KI 107CG[6]
  • Texas Instruments Professional Portable keyboard[7]
  • Some Texas Instruments Low Profile 2230528-0001[8]
  • Some Texas Instruments Low Profile 931 2228995-0001[9] & 2228995-0002[10]
  • Most Xerox 6085 (pre-1990 models) (Models: 54D[11], 65DB[11] & 93DB[12])
  • Xerox Y02 8088 [13]
  • Yamaha KB-1000

Other Devices

  • TUB TS10 Guitar Pedal[14]

References

  1. KBDMania — 알프스 스위치 분해와 결합, 윤활 방법입니다. (Korean only) Dated 2008-09-08. Retrieved 2015-07-22.
  2. Geekhack — Tactile Green Alps? Dated 2014-07-22. Retrieved 2015-07-22.
  3. eBay — AT&T UNIX PC 3B1 7300 Vintage Computer Keyboard EL1574. Added 2021-11-06.
  4. Deskthority — The Mrinterface Switch Sample Bag (p. 8)
  5. Deskthority — ohaimark's DT Quiz Time. Posted 2016-06-10.
  6. Imgur — Sony KI 107CG - Alps SKCM Brown Uploaded 2022-12-24.
  7. Imgur — Texas Instruments TI Professional Portable Luggable Computer (Alps SKCM Brown) Posted 2022-04-04.
  8. Telcontrar — [https://telcontar.net/KBK/KAref/Texas_Instruments_2230528-000/ Texas Instruments 2230528-0001. Updated 2022-01-25.
  9. Imgur — Texas Instruments Low Profile 2228995-0001. Posted 2022-04-02.
  10. Reddit — Does anyone know what this switch is called? Dated 2016-02-23. Retrieved 2016-07-31.
  11. 11.0 11.1 Imgur — Xerox 54D and 65DB - ALPS SKCM Brown Uploaded 2016-08-06.
  12. Imgur — Xerox Docutech Model 93DB (Alps SKCM Brown) Uploaded 2022-12-24.
  13. eBay — Rare Xerox Y02 8088 Computer w/Alps Keyboard. Added 2021-11-24.
  14. Reddit — Rare vintage guitar pedal uses ALPS switch (ts10~$400) Posted 2022-04-24.