Marquardt Series 6180
Contents
Overview
Series 6810 is a keyboard switch series from Marquardt. Marquardt reported that this series was manufactured from 1983 to 1995. US patent 4653179 “Method of manufacturing an electrical push-button switch” (filed in July 1985 with priority to German patent 3327199 filed in July 1983) covers the manufacturing process for the switch contact assembly. The contact assembly was re-used for the successor series 6184 although with a different actuator design.
These switches are rare, with few examples discovered to date; examples include:
- Fametech Tysso PKB-080 POS keypad; no known date
- Olympia Carrera electric typewriter, presumably early 80s (pictures currently out of action)
The switches in the Tysso PKB-080 are clearly 6180 series, although they are not an exact match for the drawing of 6180.0101 provided by Marquardt.
Cherry MX “Olympia linear clear” appears to have been created to allow Cherry MX to substitute for Series 6180 in Olympia typewriters, matching 6180’s above- and below-plate heights.
Specifications
The following specifications were taken from the drawing for :
| Total travel | 4.0±0.3 mm |
|---|---|
| Pretravel | 2.0±0.5 mm |
| Operating force | 55±15 cN |
| Switching voltage | 28 V maximum |
| Switching current | 50 mA maximum |
Examples
- Olympia Carrera, brown-top switches ca. 1986
- Olympia Carrera, black-top switches
Documentation
- 6180.0101 engineering drawing, supplied by Marquardt
See also
- Switch Archaeology: Marquardt Series 6180 showing the differences between the brown and black top variants