Alps SKCC Cream
 | |
| Manufacturer | Alps Electric |
|---|---|
| Family | Alps SKCC series |
| Product code | SKCCBJ |
| Switch type | Linear |
| Sense method | Metal leaf |
| Rated lifetime | 3–20 M |
| Bounce time | 5 ms |
| Actuation force | ca. 70 gf (estimate) |
| Peak force | 90±25 gf |
| Total travel | 3.5±0.5 mm |
| Switch mount | Plate mount |
Alps SKCC Cream is a switch in the Alps SKCC series.
Contents
Description
The return spring in SKCC Cream (black switchplate) is 10.9 mm long, of 0.22 mm gauge wire, and has nine active turns. This is virtually identical to the spring in grey switchplate Alps SKCC Tall Cream, indicating that they do indeed differ solely in keystem height.
The specifications for the Alps AKB-3420 includes the switches. The model number for the switches is not given, but all in all examples found to date, they are SKCC Cream. An older example of this keyboard ca. 1979 specifies the switch lifetime as 3×10⁶ cycles in the product literature, while a later example from ca. 1988 specifies the switch lifetime as 2×10⁷; it is not known whether this large increase was due to greater testing time, or improvements to the design. Based on non-scientific keystem-to-keystem testing, SKCC Green appears to provide 60 gf actuation, so with the 11:9 free turn ratio of the Cream and Green return springs, the heavier SKCC Cream would be in the region of 70 gf actuation. Only the "operating force" is officially specified, at 90±25 g, which will be total travel force.
Part SKCCBJ0001 has two separated terminal recesses with semicircular ends, just as found in Alps SKCC Green part SKCCBK0001.[1] Normally there is only a single terminal recess, typically with straight ends. This version has a spring in the region of 10.3–10.6 mm long, also of 0.22 mm gauge wire, but only seven active turns.
Keyboards
- Adtek System Science SKB-01[2]
- Alps AKB-3420
- Some Apple III keyboards
- Bondwell 14[3]
- Some Dragon Data Dragon 32 (late model)[Citation needed]
- Some Dragon Data Dragon 64
- EgO keyboard[Citation needed]
- Ericsson KB4701[4]
- Ergo 201[5]
- HAX-2P001B[6]
- Lane 700 [7]
- Lear Siegler ADM 22 keyboard
- Micro-Term Ergo 301[8]
- Morrow Designs keyboard (Unknown Model)[9]
- Nabu PC KBD-2
- National mybrain3000 JB-3001-02[10]
- Oshima KBC-2800[11]
- Some Radio Shack TRS-80 Model I (1979)
- Some Radio Shack TRS-80 Model III[12]
- Panasonic KX-D4910D[13]
- Sanyo MBC-1250[14]
- Sony SMC-70 series[15][16]
- Tatung 71739
- TEAC PS-85[17]
- Some Texas Instruments TI-99/4A
- Unidentified Model 03850112-201[18]
- Yaesu YK-901[19]
- Some Zenith / Heath Z-100 keyboards[20]
Keypads
- Sony SMI-7060[21]
Typewriters / Word Processors
- Hitachi Basic Master MB-6855 T [22]
Other Equipment
- Sony Magnescale LM22[23]
Gallery
Comparison with Alps SKCC Tall Cream
Comparison with Alps SKCC Green
SKCCBJ0001
The following switches were sourced from AliExpress,[24] and are from a batch previously sold on Taobao.[1] They feature a short white switchplate. The photo of the box on Taobao includes only a small fraction of the date stamp, which appears that it may be too faint to read.
SKCCBJ0001 switches
Partially opened
Opened; note the unusual divided recess around the terminals
Opened; the switchplate guide ridge remains, even though the switchplate no longer reaches down to it
Slider and spring
Disassembled, top views; note the small pegs that the switchplate sits on
Disassembled, bottom views
Fully disassembled (switch is scuffed from being opened badly)
References
- ↑ 1.0 1.1 Taobao — 日本ALPS SKCCBJ0001 健盘开关 按键开关 复位开关 微动开关
- ↑ Twitter — [1] Posted 2021-11-07.
- ↑ Deskthority — Bondwell 14 keyboard Posted 2013-08-14.
- ↑ Imgur — [2] Uploaded 2019-02-16.
- ↑ Imgur — Ergo 201 84410079 (Alps SKCC Cream) Uploaded 2022-12-24.
- ↑ Twitter — [3] Posted 2021-09-05.
- ↑ Deskthority — (SKCC cream) LANE 700 System hand wire Posted 2019-05-01.
- ↑ Deskthority — Vintage Keyboard Haul & Restoration Posted 2017-04-04.
- ↑ Imgur — [4] Uploaded 2019-01-17.
- ↑ Twitter — [5] Posted 2021-07-25.
- ↑ Deskthority — Oshima KBC-2800 SKCC XT-layout fuckery Posted 2021-05-14.
- ↑ Deskthority — Keyboard mystery: Alps 12KC018A for TRS-80 Model III
- ↑ Deskthority — Restoration Tips for a Panasonic KX-D4910D? Posted 2021-01-27.
- ↑ Imgur — Sanyo mbc-1250 - SKCC Cream Uploaded 2022-07-14.
- ↑ Deskthority — Sony SMC-70 SKCC cream Posted 2022-01-31.
- ↑ SudoNull — Sony SMC-70GP Posted 2015-06-15.
- ↑ Nitter — @wuzhangwu Posted 2021-10-24.
- ↑ Imgur — Unidentified 03850112-201 (SKCC Cream) Uploaded 2023-04-18.
- ↑ Twitter — [6] Posted 2023-04-14.
- ↑ Deskthority — Alps 12KC155B Posted 2019-08-31.
- ↑ Deskthority — Sony SMI-7060 Uploaded 2012-09-18.
- ↑ Deskthority — Yuchipashe's Yahoo Auction Haul Pt. 1 Posted 2019-10-09.
- ↑ Twitter - [7] Posted 2024-05-14.
- ↑ AliExpress — SKCC BJ0001 keyboard switch …
