Sasse series 25
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Leprechaun challenge: Find out about the apparent Hall effect version |
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| Manufacturer | Sasse |
|---|---|
| Switch type | Linear, tactile |
| Sense method | Metal leaf, Hall effect? |
| Rated lifetime | 20M |
| Total travel | 2.5 mm, 4 mm |
| Keycap mount | RAFI mount |
| Switch mount | PCB mount |
Sasse series 25 (Baureihe 25) is a series of PCB mount keyboard switches from Sasse.
Description
This switch is compatible with Siemens STB and RAFI RS 76 M. Sasse produced keyboards with this switch underneath Siemens caps (see below). The same combination has been used for the Tiki 100 computer. The designation Sasse 200MN has been copied from the Tiki hardware manual.[1]
Brief details of series 25 were listed on an older version of Sasse's website. The link to this older website was still present on the 7th of June 2003, and had been removed by the 19th of July that year. The last archived copy of the series 25 page was captured on the 2nd of November, and the replacement website no longer included individual keyswitches. The Sasse website depicted these switches both with dual terminals and quad terminals, and the quad terminal version appears to contain a Hall sensor IC (not mentioned in the page text). It appears that a Hall effect sub-series existed.
The switches are designed for a 19.05 × 19.05 mm grid.
Variants
Options included:
- One or two LEDs
- "Resistance diode" (in German, Sperrdiode)
- Tactile (German, Druckpunkt) and linear
- Nine different contact arrangements, including momentary and changeover (German, Umschaltkontakten)
Three observed variants are given below, with codenames standing in for the part numbers.
| Codename | Branding | Mount | Slider colour | Slide block colour |
|---|---|---|---|---|
| A1 | ? | RAFI-like/M8 | Black | ? |
| A2 (200MN) | None | RAFI-like/M8 | Black | Grey |
| B1 | Sasse | RAFI-like/proprietary | Cream | Black |
| B2 | Sasse | RAFI-like/proprietary | Red | Grey |
Keyboards
- Sasse "Kundenspezifisch erweiterte alphanumerische Tastatur"[2]
- Sasse "Baureihe 50"[3]
- Tiki 100 (200MN)
Gallery
200MN
Combination RAFI-like/Cherry M8-like keycap mount with stabiliser wire support; uses a black slider and grey slide block. The Tiki 100 uses these switches, and the technical manual cites them as 200MN, so this is assumed to be the part number.
Top
Jumper partially removed
Full disassembly, top views
Full disassembly, bottom views
References
- ↑ djupdal.org — TIKI-100 teknisk info → Kontiki-100 Teknisk Beskrivelse Rev.C, 1984, S.3.20
- ↑ iF Design — Award 1981. Retrieved 2017-04-10.
- ↑ iF Design — Awards 1982 and 1983. Retrieved 2017-04-10.
External links
- Flickr — "B1" and "B2" variants
- Internet Archive Wayback Machine — Keyboard Keys (2003-11-02 capture)
