Cherry M8, MD and MJ variants
The following page lists confirmed Cherry M8, MD and MJ part numbers: not all possible variants were necessarily produced.
See also the Serie M8 schema.
Contents
Catalogue types
The following types were listed in catalogues. Not every type is known to have been produced and purchased. The catalogues and other documents are as follows:
- 1982
- Cherry Keyboards and Switches Catalogue 1982 (Germany); see the Deskthority wiki
- 1985 EEM
- Cherry keyboards, keyswitches and displays advertisement, Electronic Engineers Master Catalogue 1985–86 Volume B
- 1998
- M81 and M84 pages from an unspecified 1998 catalogue (see Cherry switches on the Greendich website)
- 2013 EOL
- M8 end-of-life notification, 31st July 2013
Part | 1982 | 1985 EEM | 1998 | 2013 EOL |
---|---|---|---|---|
M81A-0100 | • | • | • | |
M81A-01R0 | • | • | • | |
M81A-01G0 | • | |||
M81A-01Y0 | • | |||
M81A-0200 | • | |||
M81A-0700 | • | |||
M81A-1300 | • | |||
M81A-1400 | • | |||
M81B-0300 | • | |||
M81B-0400 | • | |||
M81C-0100 | • | |||
M81C-0200 | • | |||
M81C-0700 | • | |||
M81C-1100 | • | |||
M81C-1400 | • | |||
M81C-1700 | • | |||
M81D-0300 | • | |||
M81D-0400 | • | |||
M81E-0500 | • | • | • | |
M81E-05R0 | • | • | ||
M81E-0600 | • | |||
M81F-0500 | • | |||
M81F-0600 | • | |||
M81F-1500 | • | |||
M81F-1600 | • | |||
M81G-0100 | • | • | • | |
M81G-0200 | • | |||
M81H-0500 | • | • | • | |
M81H-0600 | • | |||
M82A-0100 | • | |||
M82A-1100 | • | |||
M82C-0100 | • | |||
M82E-0500 | • | |||
M82E-0600 | • | |||
M82E-1500 | • | |||
M82E-1600 | • | |||
M84A-0100 | • | • | ||
M84A-01R0 | • | |||
M84E-0500 | • | • | ||
M84E-05R0 | • | |||
M84E-0600 | • | |||
M84E-1500 | • | |||
M84E-1600 | • | |||
M84F-0500 | • | |||
M84F-1500 | • | |||
M84G-0100 | • | |||
M84H-0500 | • |
Known variants
M8
Two of the German custom types found in the last-buy notification for M8 had “O” in position five, which has been changed to “0” in each instance on the basis that these were transcription errors. For M82A-1GEO, the final character is left as “O” as all other custom types have letters in the final two positions.
The details for switches marked “German custom part data” came from a spreadsheet from Cherry from May 2023 and the details were unclear and may be erroneous. The remaining details are largely derived from the part numbers. The list below is not a definitive guide to the various models but rather indicative only of the kinds of switches produced.
Part | Contact type | Keycaps | Angle | Force (cN) | Tactile | Form | Contacts | Type | Source | NSN |
---|---|---|---|---|---|---|---|---|---|---|
M81A-0100 | Gold-alloy prism | 6 mm | 0° | 70±20 | No | Open | 1A | Catalogues; US sample parts | ||
M81A-01R0 | Gold-alloy prism | 6 mm | 0° | 70±20 | No | Open | 1A | Red LED | Catalogues | |
M81A-01G0 | Gold-alloy prism | 6 mm | 0° | 70±20 | No | Open | 1A | Green LED | Catalogue | |
M81A-01Y0 | Gold-alloy prism | 6 mm | 0° | 70±20 | No | Open | 1A | Yellow LED | Catalogue | |
M81A-0200 | Gold-alloy prism | 12 mm | 0° | 70±20 | No | Open | 1A | Catalogue | ||
M81A-0700 | Gold-alloy prism | 6 mm | 7° | 70±20 | No | Open | 1A | Catalogue | ||
M81A-1300 | Gold-alloy prism | 6 mm | 0° | 105±30 | Standard | Open | 1A | Catalogue; US sample parts | ||
M81A-1400 | Gold-alloy prism | 12 mm | 0° | 105±30 | Standard | Open | 1A | Catalogue | ||
M81A-1GBR | 100 mA, 28 V | 70±20 cN | 105±30 cN | Open | 1A | German custom | German custom part data | |||
M81B-0300 | Gold-alloy prism | 6 mm | 0° | 85±20 | No | Open | 1B | Catalogue | ||
M81B-0400 | Gold-alloy prism | 12 mm | 0° | 85±20 | No | Open | 1B | Catalogue | ||
M81C-0100 | Gold-alloy prism | 6 mm | 0° | 95±35 | No | Open | 2A | Catalogue | ||
M81C-0200 | Gold-alloy prism | 12 mm | 0° | 95±35 | No | Open | 2A | Catalogue | ||
M81C-0700 | Gold-alloy prism | 6 mm | 7° | 95±35 | No | Open | 2A | Catalogue | ||
M81C-1100 | Gold-alloy prism | 6 mm | 0° | 90±35 | Standard | Open | 2A | Catalogue | ||
M81C-1400 | Gold-alloy prism | 12 mm | 0° | 90±35 | Standard | Open | 2A | Catalogue | ||
M81C-1700 | Gold-alloy prism | 6 mm | 7° | 90±35 | Standard | Open | 2A | Catalogue | ||
M81D-0300 | Gold-alloy prism | 6 mm | 0° | 85±35 | No | Open | 1A+1B | Catalogue | ||
M81D-0400 | Gold-alloy prism | 12 mm | 0° | 85±35 | No | Open | 1A+1B | Catalogue | ||
M81D-0GBM | 100 mA, 28 V | 85±35 cN | No | Open | 1A+1B | German custom | German custom part data | |||
M81E-0500 | Gold-alloy prism | 6 mm | 0° | 70±20 | No | Covered | 1A | Catalogues; US sample parts | 5930-01-451-4995 | |
M81E-05R0 | Gold-alloy prism | 6 mm | 0° | 70±20 | No | Covered | 1A | Red LED | Catalogues | |
M81E-0600 | Gold-alloy prism | 12 mm | 0° | 70±20 | No | Covered | 1A | Catalogue; parts stockist | 5930-01-276-4698 | |
M81E-0GDF | 100 mA, 28 V | 70±20 cN | 105±30 cN | Covered | 1A | German custom; with diode | German custom part data | |||
M81E-1500 | Gold-alloy prism | 6 mm | 0° | 105±30 | Yes | Covered | 1A | US sample parts | ||
M81F-0500 | Gold-alloy prism | 6 mm | 0° | 95±35 | No | Covered | 2A | Catalogue | ||
M81F-0600 | Gold-alloy prism | 12 mm | 0° | 95±35 | No | Covered | 2A | Catalogue | ||
M81F-1500 | Gold-alloy prism | 6 mm | 0° | 90±35 | Standard | Covered | 2A | Catalogue | ||
M81F-1600 | Gold-alloy prism | 12 mm | 0° | 90±35 | Standard | Covered | 2A | Catalogue | ||
M81G-0100 | Gold-alloy prism | 6 mm | 0° | 95±35 | No | Open | 1A | Space bar | Catalogues; US sample parts | |
M81G-0200 | Gold-alloy prism | 12 mm | 0° | 95±35 | No | Open | 1A | Space bar | Catalogue | |
M81H-0500 | Gold-alloy prism | 6 mm | 0° | 95±35 | No | Covered | 1A | Space bar | Catalogues | |
M81H-0600 | Gold-alloy prism | 12 mm | 0° | 95±35 | No | Covered | 1A | Space bar | Catalogue | |
M82A-0100 | Silver-alloy prism | 6 mm | 0° | 70±20 | No | Open | 1A | Last-buy notification | ||
M82A-0GDR | 100 mA, 60 V | 70±20 cN | 105±30 cN | Open | 1A | German custom; with diode | Last-buy notification; German custom part data | |||
M82A-0GEM | 100 mA, 60 V | 70±20 cN | 105±30 cN | Open | 1A | German custom | Last-buy notification; German custom part data | |||
M82A-1100 | Silver-alloy prism | 6 mm | 0° | 105±30 | Standard | Open | 1A | Last-buy notification | ||
M82A-1GEO | 100 mA, 60 V | 70±20 cN | 105±30 cN | Open | 1A | German custom; no fixing pins | Last-buy notification; German custom part data | |||
M82C-0100 | Silver-alloy prism | 6 mm | 0° | 95±35 | No | Open | 2A | Last-buy notification | ||
M82C-0GBL | 100 mA, 60 V | 95±35 cN | 90±35 cN | Open | 2A | German custom | Last-buy notification; German custom part data | |||
M82E-0500 | Silver-alloy prism | 6 mm | 0° | 70±20 | No | Covered | 1A | Last-buy notification | ||
M82E-0600 | Silver-alloy prism | 12 mm | 0° | 70±20 | No | Covered | 1A | Last-buy notification | ||
M82E-1500 | Silver-alloy prism | 6 mm | 0° | 105±30 | Standard | Covered | 1A | Last-buy notification; US sample parts | ||
M82E-1600 | Silver-alloy prism | 12 mm | 0° | 105±30 | Standard | Covered | 1A | Last-buy notification | ||
M83A-0N00 | Gold-plated copper core | Hirose | 0° | 70±15 | Yes? | Open | 1A | Hirose datasheet | ||
M83S-0N00 | Gold-plated copper core | Hirose | 0° | 70±15 | Yes? | Open | 1A | 1.5±0.3 mm travel | Hirose datasheet | |
M84A-0100 | Gold-plated wire | 6 mm | 0° | 70±20 | No | Open | 1A | Catalogues | ||
M84A-01R0 | Gold-plated wire | 6 mm | 0° | 70±20 | No | Open | 1A | Red LED | Catalogue | |
M84A-0GCH | 10 mA, 60 V | 70±30 cN | 105±30 cN | Open | 1A | German custom | Last-buy notification; German custom part data | |||
M84A-0GEN | 10 mA, 60 V | 70±30 cN | 105±30 cN | Open | 1A | German custom; without fixing pins | Last-buy notification; German custom part data | |||
M84C-0GDT | 10 mA, 60 V | 95±35 cN | 90±35 cN | Open | 2A | German custom; with diode | Sold surplus on German eBay; German custom part data | |||
M84E-0500 | Gold-plated wire | 6 mm | 0° | 70±20 | No | Covered | 1A | Catalogues | ||
M84E-05R0 | Gold-plated wire | 6 mm | 0° | 70±20 | No | Covered | 1A | Red LED | Catalogue | |
M84E-0600 | Gold-plated wire | 12 mm | 0° | 70±20 | No | Covered | 1A | Last-buy notification | ||
M84E-1500 | Gold-plated wire | 6 mm | 0° | 105±30 | Standard | Covered | 1A | Last-buy notification | ||
M84E-1600 | Gold-plated wire | 12 mm | 0° | 105±30 | Standard | Covered | 1A | Last-buy notification | ||
M84F-0500 | Gold-plated wire | 6 mm | 0° | 95±35 | No | Covered | 2A | Last-buy notification | ||
M84F-1500 | Gold-plated wire | 6 mm | 0° | 90±35 | Standard | Covered | 2A | Last-buy notification | ||
M84G-0100 | Gold-plated wire | 6 mm | 0° | 95±35 | No | Open | 1A | Space bar | Catalogues | |
M84H-0500 | Gold-plated wire | 6 mm | 0° | 95±35 | No | Covered | 1A | Space bar | Catalogues |
M83S-0N00
This type is used in the Yamaha QX21, listed as M83S-0N00 in the service manual. It is listed as M83S-0N00-001 on the Hirose datasheet, where -001 may denote the technical revision. The M83S type found in the Epson PX-8 is tactile even with the reduced travel. It is Hirose mount with 1.5 mm travel.
M84C-0GDT
This is a German custom type. The version sold on eBay was technical revision 3 (part number M84C-0GDT/03). Although the part number indicates linear switches and the plunger operating surfaces are of the linear type, the switch does apparently offer some tactility.
The pictures below are from UncleFan:
Note that the gold-plated wire contact points are attached directly to flat stationary contact posts, instead of on the usual raised area.
MD
Part | Type | Source | Notes |
---|---|---|---|
MD4A-1100 | 3 mm travel, Hirose mount | Hirose datasheet |
MJ
Part | Type | Source | Notes |
---|---|---|---|
MJ4A-1100 | 4 mm travel, Hirose mount | Hirose datasheet |